Journal of Threatened Taxa | www.threatenedtaxa.org | 26 October 2021 | 13(12): 19867–19869

 

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

https://doi.org/10.11609/jott.6463.13.12.19867-19869  

#6463 | Received 22 July 2020 | Final received 08 September 2021 | Finally accepted 28 September 2021

 

 

The genus Catapiestus Perty, 1831 (Coleoptera: Tenebrionidae: Cnodalonini) from Arunachal Pradesh with one new record to India

 

V.D. Hegde 1 & Sarita Yadav 2

 

1,2 North Eastern Regional Centre, Zoological Survey of India, Risa Colony, Shillong, Meghalaya 793003, India.

1 hegde67@yahoo.co.in (corresponding author), 2 saritayadavzsi18@gmail.com

 

 

 

Editor: Anonymity requested.   Date of publication: 26 October 2021 (online & print)

 

Citation: Hegde, V.D. & Sarita Yadav (2021). The genus Catapiestus Perty, 1831 (Coleoptera: Tenebrionidae: Cnodalonini) from Arunachal Pradesh with one new record to India. Journal of Threatened Taxa 13(12): 19867–19869. https://doi.org/10.11609/jott.6463.13.12.19867-19869

 

Copyright: © Hegde & Yadav 2021. 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:  Based on the Annual Programme of Research, Zoological Survey of India under the Ministry of Environment,

Forest and Climate Change, Govt. of India.

 

Competing interests: The authors declare no competing interests.

 

Acknowledgements: The authors are very  thankful to the director, Zoological Survey of India, Kolkata for the facilities. Special thanks to Bhaskar Saikia of ZSI, Shillong for his help during the revision of the manuscript.

 

 

 

The genus Catapiestus Perty, 1831 belongs to the tribe Cnodalonini (Tenebrionidae: Stenochiinae), and has at present 12 species in the Oriental and Palaearctic regions, including four species already reported from various parts of India, viz, Catapiestus bourgoini Pic, 1912 from Malabar- Mahe, Catapiestus piceiventris Fairmaire, 1893 from Andaman Island, Catapiestus indicus Fairmaire, 1896 from Kanara & Sikkim, and Catapiestus subrufescens Pic, 1911 from Dudhwa National Park, Uttar Pradesh (Lang & Ren 2009; Hegde & Lal 2014). The species of this genus have quite uniform characters – strongly flattened body form and coloration and scarce or no apparent external sexual dimorphism (Lang & Ren 2009). Morphological differentiation of the species mainly depends on features of the pronotum and number of teeth or denticles of profemora (Lang & Ren 2009). In the check-list of Tenebrionidae of Arunachal Pradesh, Hegde (2019) reported only one species C. indicus. Examination of the collection at North Eastern Regional Centre (NERC), Zoological Survey of India (ZSI), Shillong, revealed that there are three species C. subrufescens, C. piceiventris, and C. rugipennis collected from Arunachal Pradesh in 1982. These three species are new records for Arunachal Pradesh while C. rugipennis (originally described from Japan) is the first report from India. 

Material and Methods: The specimens were in the unidentified collection of NERC, ZSI, Shillong, Meghalaya, which were identified up to species level by their morphological characters following Lang & Ren (2009). The identified specimens were registered and deposited in the national zoological collections of ZSI, Shillong. The images were taken with binocular microscope using Leica DFC 450 camera.

 

Genus Catapiestus Perty, 1831

Diagnostic features: The genus Catapiestus was proposed by Perty (1831) with C. Piceus Perty, 1831 as type species. Subsequently, one species was described by Guèrin-Mèneville (1841), four species by Fairmaire (1888, 1893, 1896), three species by Pic (1911, 1912), and one species by Chȗjȏ (1984).

Body elongate, parallel sided, strongly depressed, Body dark brown, with dense punctures. Head broad, space between eyes broad, neck slender, and nearly cylindrical. Distal six segments of antenna dilated. Maxillary palpus with apical segments strongly securiforme. The lateral margins of pronotum with serrations, and the middle and/or lateral with depression. Elytra with distinct punctures and striae. Legs slender, femur with or without tooth, tibial spurs extremely underdeveloped, tarsi with hairs. There is no distinct sexual dimorphism.

 

1. Catapiestus subrufescens Pic, 1911

1911. Catapiestus subrufescens Pic, L’Échange, Revue Linnéenne 27: 134.

Material examined: Reg. No. I/COL/NERC- 142, 24.viii.1982, 1 specimen (sex undiagnosed), Derok Forest, Tirap Dist., Arunachal Pradesh, India, coll. C. Radhakrishnan.

Diagnostic characters: Body length: 16 mm, body blackish-brown, strongly depressed and with dense punctures. Pronotum lateral margins curved with small radius, with more acute serrations than upper, front, corner acute, hinder corner rounded, elytra punctate striate, distal six segments of the antenna dilated (Image 1).

Distribution: India (Uttar Pradesh and Arunachal Pradesh (New Record)), China, Taiwan (Type locality, Pic 1911; Lang & Ren 2009).

 

2. Catapiestus piceiventris Fairmaire, 1893

1893. Catapiestus piceiventris Fairmaire, Notes from the Leyden Museum, 15: 29.

Material examined: Reg. No. I/COL/NERC- 143, 24.viii.1982, 1 specimen (sex undiagnosed), Derak Forest, Tirap Dist., Arunachal Pradesh, India, coll. C. Radhakrishnan.

Diagnostic characters: Body length: 14 mm, body blackish-brown, strongly depressed and with dense punctures. Pronotum almost flat, middle with shallow depression with dense puncture (Image 2).

Distribution: India (Andaman Island (Type locality: Fairmaire 1893; Lang & Ren 2009) and Arunachal Pradesh (New Record)).

 

3. Catapiestus rugipennis Chûjô, 1984

1984. Catapiestus rugipennis Chûjô, ESAKIA, 22: 1.

Material examined: Reg. No. I/COL/NERC-144, 24.viii.1982, 1 specimen (sex undiagnosed), Derok forest, Tirap Dist., Arunachal Pradesh, coll. C. Radhakrishnan.

Diagnostic characters: Body length: 14 mm. Body uniformly shining dark brown, strongly depressed. Elytra punctuate striate with sparse, small punctures, punctures laterally connected with fine reticulate. Profemur with one small tooth on front ridge (Image 3).

Distribution: India (Arunachal Pradesh (new India record)), Japan (Amami-Oshima Island and Okinawa Honto Island (Type locality: Chûjô, 1984; Lang & Ren 2009)).

Discussion: The species of the genus Catapiestus are mainly distributed in the subtropical forests of southeastern Asia (Hegde & Lal 2014). Till now only four species of Catapiestus are reported from India. With the report of C. rugipennis in this paper, the total number of known Catapiestus species from India now stands at five.

From Arunachal Pradesh, only C. indicus was previously reported (Hegde 2019). The report of C. subrufescens, C. Piceiventris, and C .rugipennis constitutes the first record from the state, thus raising the total number of Catapiestus to four species for Arunachal Pradesh.

The known diversity of Catapiestus populations in India is disjunct and largely known from the northeastern states of Arunachal Pradesh and Sikkim, along with Uttar Pradesh and the southern state of Karnataka and Puducherry from the Malabar Coast as well as Andaman Islands (Fairmaire 1893, 1896; Pic 1912; Hegde & Lal 2014; Hegde 2019). The current report of this group from Arunachal Pradesh (in Tirap) is from the lower altitudinal areas which suggest that the other hill states of northeastern India might harbour yet unknown populations of this genus, as the entire area comes under the confluence of the eastern Himalaya and the Indo-Burma biodiversity hotspots. As the hilly states of northeastern India are still largely inaccessible and poorly surveyed, there is a dearth of documentation of insect fauna from the region, which is probably the reason why the known diversity of Catapiestus is still low.

 

A key to the India Catapiestus fauna is provided for the benefit of easy taxonomic identification

 

The middle longitudinal groove on pronotum distinct …..................................................… 2

    The middle longitudinal groove on pronotum indistinct  ... ... ... ... ... ... ... ... ... ........ C. indicus

 

Transverse groove on the anterior pronotum absent ..... ... ... ... ... ... ... ... ... ... ... ... ........ 3

    Transverse groove on the anterior pronotum present .............………….….. C. subrufescens

 

Pronotum without puncture posteriorly .................. ... ... ... ... ...... ... ... ............... 4

    Pronotum with puncture posteriorly ………….................................…...… C. bourgoini

 

Anterior pronotum lifted  .........................… ... ... ... ... ... ... ... ...…..… C. rugipennis

    Anterior pronotum depressed ….........................................………. C. piceiventris

 

 

For images - - click here

 

 

References

 

Chûjô, M.T. (1984). Tenebrionidae of the Nan-sei Islands IX (Coleoptera) Esakia 22: 1–4.

Fairmaire, L. (1888). Descriptions de Colèoptères de I’Indo-Chine Annales de la Sociètè Entomologique de France (6)8: 333–378.

Fairmaire, L. (1893). Colèoptères nouveaux des Indes Orientales, de la famille des Scarabaeidae, Rhipidoceridae, Tenebrionidae et Oedemeridae. Notes from the Leyden Museum 15: 17–64.--

Fairmaire, L. (1896). Hètèromères de I’Inde recueillis par M. Andrewes. Annales de la Sociètè Entomologique de Belgique 40: 6–62.

Hegde, V.D. (2019). Checklist of darkling beetles (Coleoptera: Tenebrionidae) of Arunachal Pradesh, India. Records of the Zoological Survey of India 119(1):  69–77.

Hegde, V.D. & B. Lal (2014). New record of Catapiestus subrufescens Pic, 1911 (Coleoptera: Tenebrionidae: Cnodalonini) from India. Bugs R All 21: 4–5.

Lang, J.T. & G.D. Ren (2009). A review of the genus Catapiestus Perty, 1831 (Coleoptera: Tenebrionidae: Cnodalonini) with descriptions of two new species from China, Caucasian Entomological Bulletin 5(2): 195–199.

Pic, M. (1911). Coleopteres exotiques nouveaux oupeuconnus (Suite). L’Ēchange. Revue Linnéenne 27: 132–134, 138

Pic, M. (1912). Descriptions déspeces et varieties diverses. Melanges Exotico-Entomologiques 3: 6–20.