First record of Eubroncus from India (Hymenoptera: Chalcidoidea: Mymaridae), with
description of a new species
Mohammad Hayat 1 & F.R. Khan 2
1,2 Department of Zoology, Aligarh
Muslim University, Aligarh, Uttar Pradesh 202002, India
Email:
1 mohd_hayat@rediffmail.com ; 2 insectqh11@gmail.com
Date of publication
(online): 26 August 2009
Date of publication (print): 26
August 2009
ISSN 0974-7907 (online) |
0974-7893 (print)
Editor: T.C. Narendran
Manuscript details:
Ms # o2079
Received 11 October 2008
Final received 07 July 2009
Finally accepted 08 August 2009
Citation: Hayat, M. & F.R. Khan (2009). First
record of Eubroncus from India
(Hymenoptera: Chalcidoidea: Mymaridae),
with description of a new species. Journal of Threatened Taxa1(8): 439-440.
Copyright: © Mohammad Hayat & F.R. Khan 2009. Creative Commons Attribution
3.0 Unported License. JoTTallows unrestricted use of this article in any medium for non-profit purposes,
reproduction and distribution by providing adequate credit to the authors and
the source of publication.
Acknowledgements: We are thankful
to the Indian Council of Agricultural Research, New Delhi and Dr. V.V.
Ramamurthy, Division of Entomology, Indian Agricultural Research Institute, New
Delhi, India, the National Coordinator of the “Network Project on Insect
Biosystematics” for financial assistance. We are also grateful to the
authorities of the Aligarh Muslim University and to the Chairman, Department of
Zoology, for providing facilities
The genera Eubroncusand Stomarotrum were described by Yoshimoto, Kozlov and Trjapitzin(1972). The type species of Eubroncus, E. orientalis,was based on two males collected in Selangor (Malaysia) and the type
species of Stomarotrum, S. prodigiosum, was based on a female collected in the Primorskii krai (Russia). Triapitsyn & Huber (2000) subsequently synomynized Stomarotrum with Eubroncus (Triapitsyn & Berezovskiy2002). More recently Triapitsyn and Berezovskiy (2002)redescribed E. prodigiosus(Yoshimoto et al. 1972) based on females and males collected in Primorskii krai, and indicated
that E. orientalis Yoshimoto et al. is
represented by males from localities in the Oriental and Australasian regions.
One of us (FRK) collected a single
female of Eubroncus from Gorabari(Darjeeling District, West Bengal, India) which proved to belong to an undescribed species. It is described as E. indicus, sp. nov.
Eubroncus indicus sp. nov.
(Images
1–6)
Material
examined
Holotype: Female,
15.vi.2008, (on card, with right wings and antenna on slide), Gorabari, Darjeeling, West Bengal, India, coll. F.R. Khan. Holotype deposited in Insect collection, Department of
Zoology, Aligarh Muslim University, Aligarh (ZDAMU), Reg.No.HYM/CH. 568.
Etymology
The species name is based on the country
of origin of the specimen.
Description
Female: (Holotype) Body length, 1.14mm. Body completely dark brown
(Image 1); head, thorax and petiole nearly black, highly metallic and shiny. Antenna dark brown except radicleyellow. Mandibles
brownish-yellow. Wings infuscate, the infuscationprominent below venation. Legs
dark brown, especially coxae; fourth tarsal segment
of mid and hind legs, and tarsal segments 3 and 4 of fore legs brown; remaining
tarsal segments pale brownish yellow.
This species is similar to E. prodigiosus in sculpture and setationbut differs in dimensions of various body parts as follows:
Head in dorsal view 1.2x as long as
wide and, in profile, 1.33x as long as high; eyes oval, broadest anteroventrally and narrower posterodorsally,
1.4x as long as broad (7: 5) (Image 2); ocelli small,ocellar triangle with apical angle strongly obtuse;
posterior ocelli about two ocellardiameters from occipital ridge. Mandibles slightly longer
than length of vertex (14: 13.5) and shorter than dorsal length of head (14:
18) (Image 2). Antenna as in Image 3; scapeabout 5.5x as long as broad.
Thorax only slightly longer than length
of petiole and gaster combined (32.5: 29.5) and
slightly more than 2x as long as broad (32.5: 15); pronotum1.55x as broad as long (14: 9) and slightly longer than mesoscutum(9: 8); median length of propodeum 0.8x of mesoscutum length (6.5: 8) and 0.76x length of scutellum (anterior and posterior scutellumcombined) (6.5: 8.5); apex of propodeum with a small
tooth at posterolateral margin on each side; propodeum in mesal third with a
nearly ‘U’- shaped ridge. Wings as in Images 4–6, basal setation as
in E. prodigiosus, but hypochaetaalmost as long as width of wing at that point.
Petiole 1.62x as long as
broad, with short spine like projection from each side anterolaterally.
Gaster shorter than
thorax (23: 32.5); TI (first tergite) smooth, without
any ridges or carinae; T I occupying 0.45x gaster length: T II occupying 0.32x of gasterlength, remaining tergites very narrow and partly
retracted; ovipositor short, not exsertedat apex.
Male: Unknown.
Host: Unknown.
Comments: Eubroncus indicussp. nov. resembles E. prodigiosus in general body colour, sculpture and setation,
including the undivided pronotum, but differs in
dimensions of various body parts. Eubroncus indicushas oval shaped eyes, the scape about 5.5x as long as
broad, the petiole 1.62x as long as broad, and TI of gaster nearly smooth. (In E. prodigiosus,
based on the description given by Triapitsyn & Berezovskiy 2002: the eyes are circular; the scape about 3x as long as broad;
the petiole about as long as broad, and T I of gasterwith prominent ridges and carinae.)
References
Triapitsyn,
S.V. & V.V. Berezovskiy (2002). Review of the Mymaridae (Hymenoptera, Chalcidoidea)
of Primorskii krai: Genera Anagroidea Girault and Eubroncus Yoshimoto, Kozlov et Trjapitzin. Far
Eastern Entomologist, No.114: 1-17.
Yoshimoto, C.M.,
M.A. Kozlov & V.A. Trjapitzin(1972). A new subfamily of Mymaridae(Hymenoptera, Chalcidoidea). [In Russian]. Entomologicheskoe Obozrenie, 51: 878-885.