Journal of Threatened Taxa | www.threatenedtaxa.org | 26 June 2023 | 15(6): 23327–23337

 

 

ISSN 0974-7907 (Online) | ISSN 0974-7893 (Print) 

https://doi.org/10.11609/jott.7811.15.6.23327-23337

#7811 | Received 29 December 2021 | Final received 24 March 2023 | Finally accepted 05 June 2023

 

 

Addition to the Odonata fauna of Tripura, India

 

Dhiman Datta 1 , B.K. Agarwala 2  & Joydeb Majumder 3

 

1,2,3 Ecology and Biodiversity Laboratories, Department of Zoology, Tripura University, Suryamaninagar, Tripura 799022, India.

1 dhimandatta991@gmail.com, 2 bagarwala00@gmail.com, 3 jmtugemo@gmail.com (corresponding author)

 

 

 

Editor: Ashish D. Tiple, Dr. R.G. Bhoyar ACS College, Seloo, Wardha, Maharashtra, India. Date of publication: 26 June 2023 (online & print)

 

Citation: Datta, D., B.K. Agarwala & J. Majumder (2023). Addition to the Odonata fauna of Tripura, India. Journal of Threatened Taxa 15(6): 23327–23337. https://doi.org/10.11609/jott.7811.15.6.23327-23337

 

Copyright: © Datta et al. 2023. Creative Commons Attribution 4.0 International License.  JoTT allows unrestricted use, reproduction, and distribution of this article in any medium by providing adequate credit to the author(s) and the source of publication.

 

Funding: None.

 

Competing interests: The authors declare no competing interests.

 

Author details: Mr. Dhiman Datta did master’s degree in Zoology from Tripura University, Suryamaninagar, West Tripura and presently working as a visiting Lecturer of Women’s College, Department of Zoology, Agartala, Tripura. His research interests are diversity and ecology study of odonates, ants, moths, and butterflies. Dr. Basant Kumar Agarwala is a retired professor of Tripura University, Department of Zoology, and ex-chairman of Tripura State Pollution Control Board. He works on taxonomy, diversity and ecology of aphids, ladybird beetles, butterflies, odonates, and many more insects. Dr. Joydeb Majumder pursued his master’s degree and PhD in Zoology from Tripura University and currently works as a program manager of Biodiversity Conservation in the Project for Sustainable Catchment Forest Management Project (SCATFORM), Tripura. His research interests are diversity and ecological  study of aphids, ladybird beetles, snakes, butterflies, moths, and odonates. 

 

Author contributions: DD and JM have collected the data and prepared the manuscript; BKA reviewed the manuscript and also allowed using laboratory facilities.

 

Acknowledgements: The authors are greatly thankful to Arajush Payra and Aaratrik Pal for their support and help in the identification of Odonata species and in the preparation of the first draft of the manuscript; and Dr. Partha Pratim Bhattacharjee, Dipankar Kishore Sinha, and Rahul Lodh for their generous assistance during field visits.

 

 

 

Abstract: The present study was conducted in nine different locations (forested areas and unclassified natural areas) of six administrative districts of Tripura State from March 2012 to May 2019 as part of the biodiversity exploration of the state for further addition of odonate fauna. In this communication, we report six species of Anisoptera and seven species of Zygoptera as new records from Tripura State. Among these 13 newly recorded species, one Anisoptera and two Zygoptera species are Data Deficient and the rest are Least Concern according to IUCN Red List.

 

Keywords: Damselfly, dragonfly, Insecta, amphibiotic, habitat preference, Indo-Burma biodiversity hotspot, range extension, data deficient, regional species pool, IUCN Red List.

 

Abbreviations: TU—Tripura University | ODO—Odonata | AESH—Aeshnidae | GOMP—Gomphidae | LIBE—Libellulidae | EUPH—Euphaeidae | PLAT—Platycnemididae | COEN—Coenagrionidae| IMG XXXX (4 digits)—raw image number of photograph.

 

 

 

Introduction

 

The insect order Odonata comprises of dragonflies (Anisoptera) and damselflies (Zygoptera). Members of this order are widely distributed, insectivorous, and amphibiotic. Egg and larval stages are aquatic and the adult stage is terrestrial. Odonata insects prefer hilly streams, and forested riparian habitats and most of the endemic and rare species are restricted to these habitats (Andrew et al. 2008, 2009; Subramanian 2009, 2012; Mitra et al. 2010; Subramanian et al. 2011; Koparde et al. 2015). Habitats like ponds, lakes, coastal marshes, natural & man-made water bodies, water logged areas, grass lands, and paddy fields support species richness and diversity (Subramanian 2009, 2012; Mitra et al. 2010; Subramanian et al. 2011; Majumder et al. 2014; Tiple & Khoparde 2015). The eastern India is one of the globally rich areas of odonates, and the forest streams and rivers of this region are natural habitats for many endemic and habitat-specialist species. In the eastern Himalaya, high endemism occurs in Khasi hills and Darjeeling-Sikkim Himalaya (Subramanian & Babu 2017). Tripura province, a small hilly State of northeastern India in Indo-Burma biodiversity hotspot zone (Myers et al. 2000), supports diverse odonate fauna (Clausnitzer et al. 2009) due to habitat diversity and micro habitat richness.

Of the 6,392 odonate species recorded across the world (Paulson et al. 2022), 488 are known from India (Subramanian & Babu 2017). India’s odonate fauna include 186 species/ subspecies as endemic (Subramanian & Babu 2017).  Lahiri (1977, 1987) made notable contributions to odonates of Meghalaya and Manipur (parts of north eastern India). Mitra (2002) did the most comprehensive work on odonates of north eastern India, including a review of all the literature available till then. Joshi & Kunte (2014) reported 69 species including one addition (Calicnemia erythromelas Selys, 1891) to the Indian Odonata fauna from Nagaland. Joshi et al. (2017) reported Pseudothemis zonata (Burmeister, 1839) and Burmagomphus divaricatus (Lieftinck, 1964) for the first time from Nagaland and Manipur, respectively. In Tripura, Srivastava & Sinha (2000) reported 35 species and Majumder et al. (2014) reported 53 species. In this paper, we report our findings on Odonates from Tripura State.

 

 

Methods

 

Study area

The present study was conducted at nine different locations (forested and unclassified habitats, Table: 1) of Tripura, from March 2012─May 2019 as a part of biodiversity exploration study. Geographically, Tripura lies between 22.9333°N—24.53333°N & 91.1666°E—92.35°E, and in the meeting point of two biodiversity hotspots (Eastern-Himalaya hotspot in the east and Indo-Myanmar hotspot region in the west) (Myers et al. 2000). This small north-eastern hilly state (Tripura) has a tropical savanna  climate and receives an annual rainfall ranges from 1800–2400 mm approximately; south-west monsoon spread over seven months almost (April─October)  and average minimum temperatures are around  20–25 0C, maximum temperatures are around 30–35 0C   with elevation range varying from 15 m (lowest) to 930 m (highest).

 

Field sampling and Identification

In this opportunistic study, field observations and photography of odonates were conducted mainly on clear sunny days between 08:00 h and 12:00 h during monsoon season to record maximum species of odonates (Majumder et al. 2014). Species were recorded though random walks along potential habitats like streams, bamboo forest, small forest patch, manufactured water bodies, and deep forest habitats and followed direct search technique (Sutherland 1996) and sighting is opportunistic. Comet optical binoculars 8 x 40 NV JL 77888 were used during field observations and photographs were taken by Canon EOS 50D, Canon Power Shot SX 530 HS, Canon Power Shot SX 200 IS, and SONY DSC-HX 200V camera models and YU 5010A mobile device. At first sight, photographs were taken and individuals were identified with the help of reference books (mentioned below in identification part). If only photography was not enough for identification, then specimens were captured and these were released back to their respective habitats, after visual observation and photographic identification in field was successful. In cases where field identification was not enough, then effort was made to collect at least one individual with insect net for accurate identification in the Ecology & Biodiversity Laboratory of Tripura University under permission from the authority of Tripura Biodiversity Board, Government of Tripura [letter no. F. 22/3(6)/for JBIC/I&P/B-D/07/2336 and 4972-76 dated 07.01.2009 and 29.06.2009], respectively. Morphological characters for identification of unidentified species were studied in laboratory using Zeiss Stemi 508 stereo zoom 8:1 microscope. Photographs of the observed habitat types explored in this study, helped in recording the habitat preference of different odonates.

Identification of recorded specimens was done with the help of identification keys provided by Fraser (1933, 1934, 1936); Mitra (2002); Subramanian (2009, 2014); Nair (2011), and with online databases, <www.indianodonata.org> (Joshi et al. 2019). The taxonomic list follows widely accepted systematics of Odonata by Dijkstra et al. (2013) and Subramanian & Babu (2017). Recordings of location parameters such as latitude, longitude, and elevation were done with the help of Garmin eTrex Vista GPS device. Conservation status of the recorded odonates of this study was according to the International Union for Conservation of Nature (IUCN) Red List of Threatened Species (IUCN 2020).

 

 

Results

 

Thirteen species of Odonata are reported as new records and added to the Odonata fauna of Tripura from this study. Of these, six dragonfly species belong to six different genera under three families, namely Aeshnidae, Gomphidae, Libellulidae, and seven damselfly species belonging to seven different genera under three families, namely Coenagrionidae, Euphaeidae, and Platycnemididae (bold marked species of Appendix 1). A detailed account of findings is given below: 

 

Suborder: Anisoptera Selys, 1854

Family: Aeshnidae Rambur, 1842

1. Periaeschna magdalena (Martin 1909) (Image 3.1)

Material examined: 2 males (TU/ODO/AESH/IMG0358), 30.iii.2012, Chabimura, Photo: J. Majumder;1 male (TU/ODO/AESH/IMG0002), 22.xi.2012, Jampui Hill, Photo: J. Majumder.

Habitat: Slow flowing streams surrounded by woody riparian forest.

IUCN Red List status: Least Concern (Dow 2009)

Distribution: Bhutan, China, India and Viet Nam.

Comments: Genus Periaeschna and species P. magdalena are reported for the first time from Tripura. Fraser (1936) reported this species from Garo Hills, Meghalaya which is approximately 255 km and 265 km (in aerial distance) far from Chabimura (study site-2) and Jampui hills (study site-6), respectively.

 

Family: Gomphidae Rambur, 1842

2. Macrogomphus montanus Selys, 1869 (Image 3.2)

Material examined: 1 female (ODO/GOMP/IMG 6290), 30.v.2019, Sonatala, Photo: D. Datta.

Habitat: Dry shrub jungle near to human habitation.

IUCN Red List Status: Data Deficient (Subramanian 2010)

Distribution: Bangladesh, India, and Nepal.

Comments: Genus Macrogomphus and species M. montanus are reported for the first time from Tripura. Earlier, Fraser (1936) reported this species from Assam and Khan (2018) reported it from different locations including Khagrachari (approximately 110 km far from Sonatala, Study site- 5) from the Chittagong Division, southeastern Bangladesh.

 

Family: Libellulidae Rambur, 1842

3. Tetrathemis platyptera Selys, 1878 (Image 3.3)

Material examined: 1 male (TU/ODO/LIBE/IMG0001), 09.vi.2013, Dhajanagar, Photo: J.Majumder.

Habitat: Man-made freshwater pond surrounded by secondary vegetation.

IUCN Red List Status: Least Concern (Dow 2020)

Distribution: China, India, Indonesia, Lao People’s Democratic Republic, Peninsular Malaysia, Myanmar, Thailand and Viet Nam.

Comments: Genus Tetrathemis and species T. platyptera are reported for the first time from Tripura. Earlier, Laltanpuii (2017) reported this species from different locations including Reiek (approximately 110 Km far from Dhajanagar, Study site-3) of Mamit District, Mizoram.

 

4. Tramea limbata Desjardins, 1832 (Image 3.4)

Material examined: 1 male (TU/ODO/LIBE/DSC02352), 01.xi.2013, Trishna WLS, Photo: J. Majumder.

Habitat: Natural freshwater lake with submerged vegetation.

IUCN Red List Status: Least Concern (Clausnitzer 2016)

Distribution: Botswana, Cameroon, Cape Verde, The Democratic Republic of the Congo, Cote d’Ivoire, Gabon, India, Liberia, Mali, Mauritius main island, Mayotte, Nepal, Nigeria, Oman, South Africa, Sri Lanka, Yemen and Namibia.

Comments: Genus Tramea and species T. limbata are reported for the first time from Tripura. Earlier, Laltanpuii (2017) reported this species from different locations including Lengpui  (approximately 130 Km far from Trishna WLS, Study site- 7) of  Aizawl District, Mizoram.

 

5. Trithemis festiva Rambur, 1842 (Image 3.5)

Material examined: 2 male (TU/ODO/LIBE/IMG0712), 12.vii.2016 Baramura Hill, Photo: D. Datta

Habitat: Slow flowing streamlets surrounded by secondary mixed moist deciduous forest

IUCN Red List Status: Least Concern (Dow 2009)

Distribution: Afghanistan, Cambodia, China, Cyprus, Greece, Hong Kong, India, Indonesia, Iran, Iraq, Lao People’s Democratic Republic, Malaysia, Myanmar, Nepal, Pakistan, Papua New Guinea, Philippines, Russian Federation, Singapore, Sri Lanka, Taiwan, Province of China, Thailand, Turkey, and Viet Nam.

Comments: Species T. festiva is reported for the first time from Tripura. Earlier, Rajesh Sanap recorded this species  from Hatikuli Tea Estate, Golaghat District, Assam ( posted in  Odonata of India),  approximately 600  Km far from Baramura Hills, Study site- 4.

 

6. Zyxomma petiolatum Rambur, 1842 (Image 3.6)

Material examined: 1 female (TU/ODO/LIBE/IMG2208); 03.viii.2017, Sonatala, Photo: D. Datta; 1 male (TU/ODO/LIBE/IMG0571), 24.iv.2018, Sonatala, Photo: D. Datta

Habitat: Shady areas with big trees and scrub jungles.

IUCN Red List Status: Least Concern (Subramanian & Dow 2017)

Distribution: Australia, Bangladesh, Brunei Darussalam, China, Hong Kong, India, Indonesia, Japan, Lao People’s Democratic Republic, Malaysia, Myanmar, Nepal, New Caledonia, Palau, Papua New Guinea, Philippines, Seychelles, Singapore, Sri Lanka, Taiwan, Province of China, Thailand, Vanuatu, and Viet Nam.

Comments: Genus Zyxomma and species Z. petiolatum are reported for the first time from Tripura. Earlier, Takhelmayum & Gupta (2014) reported this species from Keibul Lamjao National Park (KLNP), Manipur, approximately 230 km far from Sonatala (Study site-5).

 

Suborder: Zygoptera Selys, 1854

Family: Coenagrionidae Kirby, 1890

7. Aciagrion occidentale Laidlaw, 1919 (Image 4.1)

Material examined: 1 female (TU/ODO/COEN/DSC00945), 13.viii.2013, Saikabari, Photo: J. Majumder; 1 female (TU/ODO/COEN/IMG0003), 11.viii.2013, Amtali, Photo: J. Majumder.

Habitat: Slow flowing small perennial streams surrounded by secondary bushy forest

IUCN Red List Status: Least Concern (Mitra 2010)

Distribution: Bangladesh, Cambodia, India, Sri Lanka, Thailand and Viet Nam.

Comments: A. occidentale is reported for the first time from Tripura. Earlier, Bora &  Meitei (2014) reported this species from the ICAR Research Complex  for NEH Region, Umaim, Meghalaya, which is approximately 170 Km and 220 Km far from Saikabari (study site-1) and Amtali (study site-8),  respectively.

 

8. Argiocnemis rubescens Selys, 1877 (Image 4.2)

Material examined: 1 male (TU/ODO/COEN/IMG0158), 29.iii.2012, Chabimura, Photo: J. Majumder.

Habitat: Stagnant marshy water body with submerged vegetation and surrounded by scrub jungles.

IUCN Red List Status: Least Concern (Mitra 2017)

Distribution: Australia, Bangladesh, Brunei Darussalam, India, Indonesia, Lao People’s Democratic Republic, Malaysia, Myanmar, Papua New Guinea, Philippines, Singapore, Thailand and Vietnam.

Comments: A. rubescensis reported first time from Tripura. Earlier, Boruah et al. (2016) reported this species from Kaziranga National Park (KNP), Assam, approximately 360 km far from Chabimura (study site-2).

 

9. Mortonagrion aborense Laidlaw, 1914 (Image 4.3)

Material examined: 2 females (TU/ODO/COEN/DSC04897), 15.iii.2013, IC Nagar, Photo:  J. Majumder.

Habitat: Freshwater pond surrounded by shrubs and bamboo brakes.

IUCN Red List Status: Least Concern (Subramanian 2010)

Distribution: Bangladesh, India, Indonesia, Malaysia, and Thailand.

Comments: Genus Mortonagrion and species M. aborense are reported for the first time from Tripura. Earlier, Boruah & Saikia (2015) reported this species from Barpeta, Assam, approximately 285 Km far from IC Nagar (study site-9).

 

Family: Euphaeidae Jacobson & Bianchi, 1905

10. Dysphaea walli Fraser, 1927 (Image 4.4)

Material examined: 2 males (TU/ODO/EUPH/IMG8754), 17.vi.2013, Chabimura, Photo: J. Majumder.

Habitat: Alongside riverbank, surrounded by mature riparian mixed-moist deciduous forest.

IUCN Red List Status: Data Deficient (Dow 2019)

Distribution: Bangladesh, India and Myanmar.

Comments: Genus Dysphaea and species D. walli are reported for the first time from Tripura. An earlier observation (Anonymous 2020a) (www.indianodonata.org) by Somen Sarkar reported the species from Jeypore-Dehing Rain Forest, Dibrugarh District, Assam, approximately 570 km far from Chabimura (study site-2).

 

Family: Platycnemididae Tillyard, 1917

11. Elattoneura campioni Fraser, 1922 (Image 4.5)

Material examined: 2 females (TU/ODO/PLAT/DSC00750), 13.viii.2013, Saikabari, Photo: J. Majumder.

Habitat: Free flowing stream surrounded by mature secondary squashy semi-evergreen forest.

IUCN Red List Status: Data Deficient (Sharma &Dow 2010)

Distribution: India and Myanmar

Comments: Genus Elattoneura and species E. campioni are reported for the first time from Tripura. Earlier, Boruah et al. (2016) reported this species from Kaziranga National Park (KNP), approximately 290 km far from Saikabari (study site-1).

 

12. Prodasineura verticalis Fraser, 1921 (Image 4.6)

Material examined: 2 males (TU/ODO/PLAT/DSC00579), 10.viii.2013, Saikabari, Photo:  J. Majumder.

Habitat: Free flowing stream surrounded by secondary mixed-moist deciduous forest.

IUCN Red List Status: Least Concern (Dow 2010)

Distribution: Bangladesh, Brunei Darussalam, China, India, Indonesia, Lao People’s Democratic Republic, Malaysia, Myanmar, and Thailand.

Comments: Genus Periaeschna and species P. magdalena are reported for the first time from Tripura. Earlier, Subramanian (2015) reported this species from northeastern India.  An observation (Anonymous 2020b) published in Odonata of India (www.indianodonat.org) website by Rejoice Gassah from Dosdewa Forest Trail, Karimganj District, Assam, approximately 50 km far from Saikabari (study site-1).

 

13. Pseudocopera ciliata Selys, 1863 (Image 4.7 and 4.8)

Material examined: 2 males, (TU/ODO/PLAT/IMG0196), 29.iii.2018, Sonatala, Photo: D. Datta; 1 female (TU/ODO/PLAT/IMG6928), 26.v.2016, Sonatala, Photo:  D.Datta

Habitat: Slow flowing drain water area near to pond or paddy field. 

IUCN Red List Status: Least Concern (Dow 2018)

Distribution: Bangladesh, Cambodia, China, Hong Kong, India, Indonesia, Peninsular Malaysia, Myanmar, Taiwan, Province of China, Thailand and Vietnam.

Comments: Genus Pseudocopera and species P. ciliata are reported for the first time from Tripura. Earlier, Josh & Kunte (2014) reported this species from Intanki, Peren District, Nagaland which is approximately 255 km far from Sonatala (study site-5). All distances mentioned here are aerial distance between two selective areas.

 

 

Discussions and Conclusions

 

Before this study, quality field data on distribution and habitat preference of odonates was scanty from most of the eastern Himalayan range, particularly from the southern and eastern parts including the state Tripura of India. Present study is a substantial advancement of the odonate diversity of Tripura over the earlier studies (Srivastava & Sinha 2000; Majumder et al. 2014). After this study with addition of 13 species, the updated odonate fauna of Tripura state is represented by 75 species under 49 genera (28 Anisoptera genera and 21 Zygoptera genera) and nine families (4 Anisoptera and 5 Zygoptera ); (Appendix 1). Three odonata species namely, M. montanus, D. walli and E. campioni showed Data Deficient as per IUCN Red List categories of threatened species. Among the 13 species reported here, 12 species are endemic to India except D. walli as per Subramanian & Babu (2017). P. magdalena, Macrogomphus montanus, Tetrathemis platyptera, Tramea limbata, Trithemis festiva, Z. petiolatum, Aciagrion occidentale, Argiocnemis rubescens, Mortonagrion aborense, Elattoneura campioni, Prodasineura verticalis, Pseudocopera ciliata are endemic to India recorded from this study. Members of T. festiva are found commonly near streams and those of Zyxomma petiolatum are common in shady areas surrounded by big trees and shrubs. Members of Aciagrion occidentale, Argiocnemis rubescens, Mortonagrion aborense, P. ciliata are very common in their respective study sites. However, P. magdalena, M. montanus, T. platyptera, T. limbata, Dysphaea walli, E. campioni, P. verticalis are found to be comparatively rare in their study sites. The documenting of the regional species pool from this part of India has benefited the inclusion of previously unrecorded odonate species, which will help future researchers in the understanding of species biology, distributional ranges, and prospective habitats.

 

 

Table 1. Geoco-ordinates of the study sites.

District

 Study sites

 

Latitude (N)

Longitude (E)

Elevation (meter)

Habitat types

Dhalai

Saikabari (SB); Study site-1

24.120

 

91.900

123

Perennial stream surrounded by moist-deciduous secondary forest

Gomati

Chabimura(CM);  Study site-2

23.540

91.600

47

Riparian woody forest

Dhajanagar (DN);  Study site-3

23.540

91.460

107

Man-made freshwater pond

Khowai

Baramura Hill (BH);  Study site-4

23.810

91.570

44

Secondary mixed-moist deciduous forest nearby small stream

Sonatala (ST);  Study site-5

24.040

91.610

33

Slow flowing drain water surrounded by herbs and shrubs

North Tripura

 

 

Jampui Hill (JH);  Study site-6

23.990

92.280

176

Slow flowing stream surrounded by semi-evergreen forest

South Tripura

Trishna Wildlife Sanctuary (TWS);  Study site-7

23.250

91.370

 

45

Natural freshwater lakes with submerged vegetation

West Tripura

Amtali (AT);  Study site-8

23.770

91.260

27

Secondary scrub jungles

Ishan Chandra Nagar (ICN);  Study site-9

23.750

91.250

25

Man-made freshwater pond surrounded by scrub jungles

 

 

For images - - click here for full PDF

 

 

References

 

Andrew, R.J., K.A. Subramanian & A.D. Tiple (2008). Common Odonates of Central India. In: E-book for “The 18th International Symposium of Odonatology”. Hislop College, Nagpur, India, 55 pp. Accessed on 19 July 2020.

Andrew R.J., K.A. Subramanian & A.D. Tiple (2009). A Handbook on Common Odonates of Central India. South Asian Council of Odonatology,  Nagpur, India, 65 pp. Accessed on 19 July 2020.

Anonymous (2020a). Dysphaea  walli Fraser, 1927 – Sapphire Torrent Dart. In: Joshi, S., P. Dawn, P. Roy & K. Kunte (eds.). Odonata of India, v.1.48. Indian Foundation for Butterflies.  https://www.indianodonata.org/sp/276/Disphaea-walli.  Accessed on 19 July 2020.

Anonymous (2020b). Prodasineura  verticalis Selys, 1860 – Red-striped Black Bamboo tail. In Joshi, S., P.Dawn, P.Roy, and K. Kunte (eds.).Odonata of India, v.1.48. Indian Foundation for Butterflies. https://www.indianodonata.org/sp/332/Prodasineura-verticalis. Accessed on 19 July 2020.

Anonymous (2023). Trithemis festiva Rambur, 1842 –  Black Stream Glider.  In Joshi, S., P.Dawn, P. Roy & K. Kunte (eds.). Odonata of India, v.1.57. Indian Foundation for Butterflies. https://www.indianodonata.org/sp/646/Trithemis-festiva. Accessed on 5 June 2023.

Bora. A. & L. R. Meitei (2014). Odonates (Dragonflies and Damselflies) of Indian Council of Agricultural Research (ICAR), Research Complex for NEH Region Campus, Umiam, Meghalaya, India.  Journal of Entomology and Zoology Studies, 2 (6):  16-21. Accessed on 19 July 2020.

Boruah C.& P. K. Saikia (2015). Abundance and diversity of Odonates in different habitats of Barpeta District, Assam, India.  International Research Journal of Biological Sciences 4(9): 17–27. Accessed on 19 July 2020.

Boruah, B., M. J. Gogoi., A. Payra., G.N. Das., M. Bortamuly & R. Sharma (2016).  Diversity and habitat preference of Odonata fauna (Insecta) in Kaziranga Karbi Hills, Central Assam, Northeast India. Ambient Science 3(2): 64–68. https://doi.org/10.21276/ambi.2016.03.2.ra03

Clausnitzer, V. (2016). Tramea limbata. The IUCN Red List of Threatened Species 2016: e.T60050A83381971. https://doi.org/10.2305/IUCN.UK.2016-3.RLTS.T60050A83381971.en Accessed on 19 July 2020.

Clausnitzer, V., V. Kalkman, M. Ram, B. Collen, J.M. Baillie, M. Bedjanič, W.T. Darwall, K. Dijkstra, R. Dow, J. Hawking, H.Karube, E. Malikova, D. Paulson, K. Schütte, F. Suhling, R. Villanueva, N.V. Ellenrieder & K. Wilson (2009). Odonata enter the biodiversity crisis debate: the first global assessment of an insect group. Biological Conservation 142: 1864–1869. https://doi.org/10.1016/j.biocon.2009.03.028

Dijkstra,  K.D.B., V.J. Kalkman, R.A. Dow, F.R. Stokvis & J. van Tol (2013).  Redefining the damselfly families: the first comprehensive molecular phylogeny of Zygoptera (Odonata). Systematic Entomology 39(1): 68–96. https://doi.org/ 10.1111/syen.12035

Dow, R.A. (2009). Trithemis festiva. The IUCN Red List of Threatened Species 2009: e.T163609A5623492. https://doi.org/10.2305/IUCN.UK.2009-2.RLTS.T163609A5623492.en Accessed on 19 July 2020.

Dow, R.A. (2009). Periaeschna magdalena. The IUCN Red List of Threatened Species 2009: e.T163654A5630735. Accessed on 19 July 2020. https://doi.org/10.2305/IUCN.UK.2009-2.RLTS.T163654A5630735.en Accessed on 19 July 2020.

Dow, R.A. (2010). Prodasineura  verticalis. The IUCN Red List of Threatened Species 2010: e.T167096A6301209. Accessed on 19 July 2020. https://doi.org/10.2305/IUCN.UK.2010-4.RLTS.T167096A6301209.en Accessed on 19 July 2020.

Dow, R.A. (2018). Pseudocopera ciliata (amended version of 2010 assessment). The IUCN Red List of Threatened Species 2018: e.T167066A127544569. https://doi.org/10.2305/IUCN.UK.2018-1.RLTS.T167066A127544569.en Accessed on 19 July 2020.

Dow, R.A. (2019). Dysphaea  walli. The IUCN Red List of Threatened Species 2019: e.T169138A125769796. https://doi.org/10.2305/IUCN.UK.2019-2.RLTS.T169138A125769796.en Accessed on 19 July 2020.

Dow, R.A. (2020). Tetrathemis platyptera. The IUCN Red List of Threatened Species 2020: e.T163647A138281957. https://doi.org/10.2305/IUCN.UK.2020-1.RLTS.T163647A138281957.en Accessed on 19 July 2020.

Fraser, F.C. (1933). The Fauna of British India including Ceylon and Burma. Odonata - Vol. I. Taylor and Francis Ltd., London, 439pp.

Fraser, F.C. (1934). The Fauna of British India including Ceylon and Burma. Odonata - Vol. II. Taylor and Francis Ltd., London, 430pp.

Fraser, F.C. (1936). The Fauna of British India including Ceylon and Burma. Odonata - Vol. III. Taylor and Francis Ltd., London, 485pp.

Joshi, S. & K. Kunte (2014). Dragonflies and damselflies (Insecta: Odonata) of Nagaland, with an addition to the Indian odonate fauna. Journal of Threatened Taxa 6(11): 6458–6472. https://doi.org/10.11609/JoTT.o3911.6458-72  

Joshi, S.,  J. Veino,  D. Veino, L. Veino, R. Veino & K. Kunte (2017). Additions to the Indian dragonfly fauna, and new records of two enigmatic damselflies (Insecta: Odonata) from northeastern India. Journal of Threatened Taxa 9(7): 10433–10444. https://doi.org/10.11609/jott.3423.9.7.10433-10444

Joshi, S., P. Dawn, P. Roy & K. Kunte (eds.) (2019). Odonata of India, v.1.48. Indian Foundation for Butterflies. https://www.indianodonata.org.  Accessed on 15 June  2019.

Joshi, S., P. Dawn,  P. Roy & K. Kunte (eds.) (2019). Odonata of India, v.1.48. Indian Foundation for Butterflies. https://www.indianodonata.org. Accessed on 15 June  2019.

Khan, M.K. (2018). Odonata of eastern Bangladesh with three new records for the country. Journal of Threatened Taxa 10(13): 12821– 12827.https://doi.org/10.11609/jott.3819.10.13.12821-12827

Koparde, P.,  P. Mhaske &  A. Patwardhan (2015). Habitat correlates of Odonata species diversity in north Western Ghats, India. Odonatologica 44(1/2):21─43. Accessed on 15 June  2019.

Lahiri, A.R. (1977). New records of Odonata from Tripura and Arunachal Pradesh. Proceedings of the  Zoological Society,  Calcutta, 30: 45─49.

Lahiri, A.R. (1987). Studies on the Odonata fauna of Meghalaya. Records of Zoological Survey of India. Occasional Paper 99: 1–402.

Laltanpuii, K., HT. Lalremsanga., R.  Babu., N. K.  Senthil & T. Manu (2017). Distribution and Diversity of Libellulidae (Odonata: Anisoptera) from Indo-Burma Biodiversity Hotspot Region and their Phylogenetic Organization.  Research & Reviews: Journal of Zoological Sciences 5(1): 2321–6190. 

Majumder, J.,  P.P. Bhattacharjee & B.K. Agarwala (2014). Dragonflies and damselflies (Insecta: Odonata) of Tripura, northeastern India with a pictorial catalogue. Journal of Threatened Taxa 6(14): 6683–6702. https://doi.org/10.11609/jott.o3750.6683-702

Mitra, A., R. Dow, K.A. Subramanian& G. Sharma (2010). The status and distribution of dragonflies and damselflies (Odonata) of the Eastern Himalaya, pp. 54–66. In: Allen, D.J., S. Molur, S. & B.A. Daniel (Compilers). Status and Distribution of Freshwater Biodiversity in the Eastern Himalaya. IUCN, Cambridge,  UK & Gland, Switzerland and Zoo Outreach Organization, Coimbatore, India. Accessed on 19 July 2020.

Mitra, T.R. (2002a). Endemic Odonata of India. Records of the Zoological Survey of India 100(3─4): 189─199.

Mitra, T.R. (2002b). Geographical distribution of Odonata (Insecta) of Eastern India. Memoirs of Zoological Survey India, XI+ 208 pp.

Mitra, A. (2010).  Aciagrion occidentale. The IUCN Red List of Threatened Species 2010: e.T167267A6320067. https://doi.org/10.2305/IUCN.UK.2010-4.RLTS.T167267A6320067.en Accessed on 19 July 2020.

Mitra, A. (2017). Argiocnemis rubescens. The IUCN Red List of Threatened Species 2017: e.T167343A87523052. https://doi.org/10.2305/IUCN.UK.2017-1.RLTS.T167343A87523052.en Accessed on 19 July 2020.

Myers, N., R. Mittermeier, C. Mittermeier, G.B. da Fonseca & J. Kent (2000). Biodiversity hotspots for conservation priorities. Nature 403: 853–858. https://doi.org/10.1038/35002501

Nair, M.V. (2011). Dragonflies & Damselflies of Orissa and Eastern India. Wildlife Organisation, Forest & Environment Department, Government of Orissa, 252pp.

Nair, M.V. (2011). Dragonflies and Damselflies of Orissa and Eastern India. Wildlife Organisation, Forest and Environment Department, Government of Orissa, 254pp.

Prasad, M. & R.K. Varshney (1995). A checklist of the Odonata of India including data on larval studies. Oriental Insects 29: 385─428.

Paulson, D., M. Schorr & C. Deliry (2022). World Odonata List. https://www.pugetsound.edu/puget-sound-museum-natural-history/biodiversity-resources/insects/dragonflies/world-odonata-list. Accessed on 23 March 2023.

Sharma, G. & R.A. Dow (2010). Elattoneura campioni. The IUCN Red List of Threatened Species 2010: e.T167277A6321630. https://doi.org/10.2305/IUCN.UK.2010-4.RLTS.T167277A6321630.en Accessed on 15 June 2019.

Srivastava, V.D. & C. Sinha (2000). Insecta: Odonata, pp. 155–196. In: Fauna of Tripura, State Fauna Series 7 (Part 2). Zoological Survey of India Publication, Kolkata, India.

Subramanian, K.A. (2009). A  Checklist of Odonata of India. Zoological Survey of India,  36pp.

Subramanian, K.A. (2010). Macrogomphus montanus. The IUCN Red List of Threatened Species 2010: e.T167301A6325747. https://doi.org/10.2305/IUCN.UK.20104.RLTS.T167301A6325747.en Accessed on 19 July 2020.

Subramanian, K.A. (2010). Mortonagrion aborense. The IUCN Red List of Threatened Species 2010: e.T167358A6333989. https://doi.org/10.2305/IUCN.UK.2010-4.RLTS.T167358A6333989.en Accessed on 19 July 2020.

Subramanian, K.A., Francy Kakkassery & M.V. Nair (2011). The status and distribution of dragonflies and damselflies (Odonata) of the Western Ghats, pp. 63–74. In: Molur, S., Smith, K.G., Daniel, B.A and Darwall, W.R.T. (Compilers). The Status and Distribution of Freshwater Biodiversity in the Western Ghats. IUCN, Cambridge, UK & Zoo Outreach, Coimbatore, India. Accessed on 19 July 2020.

Subramanian, K.A. (2012). Foraging and Breeding Behaviour of Peninsular Indian Odonata, pp. 158─171. In: Anathakrishnan, T.N. & K.G. Sivaramakrishnan (eds.). Dynamics of Insect Behaviour. Scientific Publishers.

Subramanian, K.A. (2014). A Checklist of Odonata of India. Zoological Survey of India, Kolkata, 31pp.

Subramanian, K.A. & R. Babu (2017).  Checklist of Odonata (Insecta) of India, Version 3.0 . Accessed on 19 July 2020.

Subramanian, K.A. & R.A. Dow (2017).  Zyxomma petiolatum. The IUCN Red List of Threatened Species 2017: e.T167216A83384652. https://doi.org/10.2305/IUCN.UK.20171.RLTS.T167216A83384652.en Accessed on 19 July 2020.

Sutherland, W.J. (1996). Ecological Census Techniques. Cambridge University Press, Cambridge , USA, 450pp.

Takhelmayum, K. & S. Gupta (2014). Odonata larvae of Keibul Lamjao National Park, Manipur, northeastern India. Journal of Threatened Taxa 6(6): 5858–5863. https://doi.org/10.11609/JoTT.o3453.5858-63

Tiple, A.D. & P. Koparde (2015). Odonata of Maharashtra, India with notes on species distribution. Journal of Insect Science 15(1): 1–10. https://doi.org/10.1093/jisesa/iev028  

 

Appendix 1. Updated checklist of dragonflies and damselflies recorded from Tripura. It contains species from all the studies done so far from Tripura (Srivastava & Sinha 2000, Majumder et al. 2014) along with the present study (in bold fonts).

 

Scientific name with author and year of description

Family

 

Dragonflies

 

1

Gynacantha subinterrupta Rambur, 1842

Aeshnidae

2

Periaeschna magdalena Martin, 1909

Aeshnidae

3

Ictinogomphus rapax Rambur, 1842

Gomphidae

4

Macrogomphus montanus Selys, 1869

Gomphidae

5

Paragomphus lineatus Selys,1850

Gomphidae

6

Acisoma panorpoides Rambur, 1842

Libellulidae

7

Aethriamanta brevipennis Rambur, 1842

Libellulidae

8

Brachydiplax chalybea Brauer, 1868

Libellulidae

9

Brachydiplax  farinosa Krüger, 1902

Libellulidae

10

Brachydiplax  sobrina Rambur, 1842

Libellulidae

11

Brachythemis contaminata Fabricius, 1793

Libellulidae

12

Camacinia gigantea  Brauer, 1867

Libellulidae

13

Cratilla lineata Brauer, 1878

Libellulidae

14

Crocothemis servilia Drury, 1773

Libellulidae

15

Diplacodes nebulosa Fabricius, 1793

Libellulidae

16

Diplacodes trivialis Rambur, 1842

Libellulidae

17

Lathrecista asiatica Fabricius, 1798

Libellulidae

18

Neurothemis intermedia Ris, 1919

Libellulidae

19

Neurothemis fulvia Drury, 1773

Libellulidae

20

Neurothemis intermedia Rambur, 1842

Libellulidae

21

Neurothemis tullia Drury, 1773

Libellulidae

22

Onychothemis testacea Laidlaw, 1902

Libellulidae

23

Orthetrum brunneum  Fonscolombe, 1837

Libellulidae

24

Orthetrum chrysis Selys, 1891

Libellulidae

25

Orthetrum glaucum Brauer, 1865

Libellulidae

26

Orthetrum luzonicum Brauer, 1868

Libellulidae

27

Orthetrum pruinosum Burmeister, 1839

Libellulidae

28

Orthetrum Sabina Drury, 1770

Libellulidae

29

Orthetrum triangulare Selys, 1878

Libellulidae

30

Palpopleura sexmaculata Fabricius, 1787

Libellulidae

31

Pantala flavescens Fabricius, 1798

Libellulidae

32

Potamarcha congener Rambur, 1842

Libellulidae

33

Rhodothemis rufa Rambur, 1842

Libellulidae

34

Rhyothemis variegata Linnaeus, 1763

Libellulidae

35

Tetrathemis platyptera Selys, 1878

Libellulidae

36

Tholymis tillarga Fabricius, 1798

Libellulidae

 

37

Tramea limbata Desjardins, 1832

Libellulidae

38

Trithemis aurora Burmeister, 1839

Libellulidae

 

39

Trithemis festiva Rambur, 1842

Libellulidae

40

Trithemis kirbyi Selys, 1891

Libellulidae

41

Trithemis pallidinervis Kirby, 1889

Libellulidae

42

Urothemis signata Rambur, 1842

Libellulidae

43

Zyxomma petiolatum Rambur, 1842

Libellulidae

44

Epophthalmia vittata Burmeister, 1839

Macromiidae

 

Damselflies

 

45

Neurobasis chinensis Linnaeus, 1758

Calopterygidae

46

Vestalis gracilis Rambur, 1842

Calopterygidae

47

Vestalis smaragdina Selys, 1879

Calopterygidae

48

Aristocypha quadrimaculata Selys, 1853

Chlorocyphidae

49

Libellago lineata  Burmeister, 1839

Chlorocyphidae

50

Aciagrion occidentale Laidlaw, 1919

Coenagrionidae

51

Aciagrion pallidum Selys, 1891

Coenagrionidae

52

Agriocnemis femina Brauer, 1868

Coenagrionidae

53

Agriocnemis lacteola Selys, 1877

Coenagrionidae

54

Agriocnemis pygmaea Rambur, 1842

Coenagrionidae

55

Agriocnemis splendidissima Laidlaw, 1919

Coenagrionidae

56

Argiocnemis rubescens Selys, 1877

Coenagrionidae

57

Ceriagrion cerinorubellum Brauer, 1865

Coenagrionidae

58

Ceriagrion coromandelianum Fabricius, 1798

Coenagrionidae

59

Ceriagrion olivaceum Laidlaw, 1914

Coenagrionidae

60

Enallagma parvum Selys, 1876

Coenagrionidae

61

Ischnura rubilio Selys, 1876

Coenagrionidae

62

Mortonagrion aborense Laidlaw, 1914

Coenagrionidae

63

Onychargia atrocyana Selys, 1865

Coenagrionidae

64

Pseudagrion australasiae Selys, 1876

Coenagrionidae

65

Pseudagrion microcephalum Rambur, 1842

Coenagrionidae

66

Pseudagrion rubriceps Selys, 1876

Coenagrionidae

67

Dysphaea walli Fraser, 1927

Euphaeidae

68

Euphaea ochracea Selys, 1859

Euphaeidae

69

Calicnemia imitans Lieftinick, 1948

Platycnemididae

70

Coeliccia didyma Selys, 1863

Platycnemididae

71

Copera marginipes Rambur, 1842

Platycnemididae

72

Copera vittata Selys, 1863

Platycnemididae

73

Elattoneura campioni Fraser, 1922

Platycnemididae

74

Prodasineura verticalis Fraser, 1921

Platycnemididae

75

Pseudocopera ciliata Selys, 1863

Platycnemididae