Gonatocerus (Lymaenon) bicoloriventris Zeya 1995
Creators: name: Triapitsyn, Serguei V.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Mymaridae
Gonatocerus
Gonatocerus bicoloriventris

description: Gonatocerus (Lymaenon) bicoloriventris Zeya, 1995   
(Figs 88–90)  
 Gonatocerus bicoloriventris Zeya in Zeya & Hayat, 1995: 96–97, 146 (illustrations).   
Holotype female [BMNH] (not examined). Type locality: Srirangapatna (or Srirangapattana) [spelled as Srirangapatnum in the original description] (near Mysore), Mandya District, Karnataka, India.  
 Gonatocerus bicoloriventris Zeya: Hayat et al. 2011: 8 (holotype depository); Manickavasagam & Rameshkumar 2011: 64 (distribution); Anwar & Zeya 2012: 52 (distribution in India).   
 Material examined. CHINA. BEIJING: Beijing (Haidian District), Fragrant Hills Park (Xiangshan Park), 23– 24.vii.2002, M.L. Buffington [1 Ƥ, UCRC]. Mentougou District: Liyan Ling (Linshan Mts.), 40°00.279’N 115°30.753’E, 1749 m, 2.viii.2002, G. Melika [1 Ƥ, UCRC]. Xiaolongmen Station, 39°59.220’N 115°31.479’E, 1095 m, 28.vii.2002, G. Melika [10 Ƥ, CNCI (1), UCRC (8), ZIN (1)].   
 Extralimital records. INDIA. KARNATAKA, Mudigere, 13°07’09’’N 75°37’41’’E, 994 m, 26.xi.2003, J.M. Heraty [1 Ƥ, UCRC]. [NATIONAL CAPITAL TERRITORY OF] DELHI, New Delhi, Indian Agricultural Research Institute, 28°37’51’’N 77°09’50’’E, 220 m, 5.xi.2003, J.M. Heraty [1 Ƥ, UCRC]. PAKISTAN. PUNJAB, Faisalabad, University of Agriculture Faisalabad, Horticulture Fruit Garden, 31°25.844’N 73°03.665’E, 184 m, 15–26.iii.2011, M.S. Hoddle, citrus orchard [1 Ƥ, UCRC].   
 Distribution. PALAEARCTIC*: China *. ORIENTAL: India (Zeya & Hayat 1995), and Pakistan *.   
 Redescription. FEMALE (specimens from China). Body length 880–980 µm (slide-mounted specimens). Head and mesosoma brown to dark brown, gaster and appendages mostly brown except base of gaster, scape, pedicel, and tarsi light brown.   
Antenna (Fig. 88) with radicle 0.33–0.35× total length of scape, rest of scape 2.8–3.3× as long as wide, faintly scuptured; pedicel much longer than F1; F1–F4 short, subequal in length (F2 the shortest funicle segment) and a little shorter than F5 or F6, F1–F6 notably shorter than F7 or F8, F7 the longest and F8 the broadest among funicle segments; mps on F7 (2) and F8 (2); clava normally with 9 mps but sometimes possibly with only 8 mps, 2.7–3.5× as long as wide, from slightly shorter to slightly longer than combined length of F6–F8.  
Mesosoma (Fig. 89). Propodeum with submedian lines moderately apart from each other. Fore wing (Fig. 90) 3.0–3.2× as long as wide; hypochaeta notably closer to distal macrochaeta than to proximal macrochaeta; longest marginal seta 0.35–0.4× maximum wing width; disc with a slight brownish tinge, bare behind submarginal vein, with a large, distinct bare area between marginal vein and cubital row of setae, and setose elsewhere. Hind wing (Fig. 90) 16–18× as long as wide; disc unevenly setose and with a slight brownish tinge; longest marginal seta 2.3–2.8× maximum wing width.  
Metasoma (Fig. 89). Gaster longer than mesosoma. Petiole 1.7–2.0× as wide as long. Ovipositor occupying 0.7–0.8× length of gaster, not or just slightly exserted beyond its apex (by at most 0.07× own length); ovipositor length: mesotibia length ratio 1.5–1.7:1.  
MALE. Unknown.  
 Diagnosis. Gonatocerus bicoloriventris is similar to the western Palaearctic species G. thyrides (Debauche), from which it differs by the relatively shorter F1–F6 of the female antenna (Fig. 88), and also in having normally 9 mps on the clava (sometimes possibly only 8), whereas in G. thyrides the clava bears 10 mps.   
 Hosts. Unknown.   
 Comments. Zeya & Hayat (1995) counted only 6 mps on the female clava; however, in the slide-mounted female specimen from Mudigere that I examined the number of mps on the clava is clearly 9 as in the specimens from China. According to the original description,, the fore wing in the type series is at most 3× as long as wide (longest marginal seta 0.24–0.28× maximum wing width) whereas in the examined specimens from China the fore wing is at least 3.0× as long as wide (longest marginal seta 0.35–0.4× maximum wing width). I regard such minor differences as intraspecific variation, also because the longest marginal seta is 0.32× maximum wing width in the non-type specimen of G. bicoloriventris from Mudigere. Also, in the specimen from Pakistan the ovipositor length: mesotibia length ratio is 1.9:1.
description: Published as part of Triapitsyn, Serguei V., 2013, Review of Gonatocerus (Hymenoptera: Mymaridae) in the Palaearctic region, with notes on extralimital distributions, pp. 1-178 in Zootaxa 3644 (1) on pages 60-61, DOI: 10.11646/zootaxa.3644.1.1, http://zenodo.org/record/246888