Oligosita obliqua Fatma & Begum

Begum, Salma, Anis, Shoeba Binte & Khan, Mohd Talib, 2015, A revision of the Indian species of Oligosita Walker (Hymenoptera: Trichogrammatidae), Zootaxa 3973 (3), pp. 401-424 : 418-420

13. Oligosita obliqua Fatma & Begum

( Figs 28–30 )

Oligosita obliqua Fatma & Begum, 2014: 114 –116, ♀, India, Uttarakhand, Dehradun (ZDAMU, examined).

Redescription. Female. Length, mesosoma + metasoma, 0.4 mm. Head pale yellow. Mandible with tip honey brown. Antenna with scape, pedicel and funicle yellow to whitish; clava with first and second segments light brown with patches of dark brown, third segment of clava dark brown. Mesosoma pale yellow. Fore wing hyaline with infuscation beneath stigmal and premarginal veins; marginal vein brown; hind wing hyaline. Legs pale yellow. Gaster pale yellow with basal part of ovipositor dark brown.

Head. Mandible with two teeth and a truncation. Antenna ( Fig. 28 ) with scape 1.46× as long as pedicel (22:15); funicle segment 2.37× as long as broad (9.5:4) and slightly longer than first segment of clava (9.5:8); clava about 3.55× as long as broad (32:9); lengths of C1–C3, 9:11:12; apical segment of clava with a hook-like bristle.

Mesosoma. Pronotum, visible part, 5.6× as broad as long (45:8); pronotal collar with 2 pairs of setae; mid lobe of mesoscutum about 1.2× as broad as long (30:25); scutellum about 2.4× as broad as long (34:14); mesoscutum and scutellum with scale like reticulation; propodeum longer than metanotum (11:2). Fore wing ( Fig. 29 ) 5.1× as long as broad (132:26); marginal fringe 2× as long as wing width (53:26); hind wing 19.8× as long as broad (119:6); marginal fringe 7.2× as long as wing width (43:6).

Metasoma. 1.7× as long as mesosoma; ovipositor long, 2.9× as long as hind tibia (140:48) and 3.0× as long as mid tibia (140:46) and originating from base, and exserted.

Male. Unknown.

Material examined. Holotype, ♀ (on slide), labelled, “ INDIA: UTTARAKHAND: DEHRADUN, 03.xi.2009 Coll. F.R. KHAN ” ( ZDAMU, Registration No. HYM. CH.701).

Distribution. India: Uttarakhand.

Comments. The original description of this species was based on one female. The holotype is on one slide under 3 coverslips.

This species appears similar to O. curvialata Lin (1994) , but differs from the latter in having the fore wing 5.1× as long as broad, longest marginal fringe 2× as long as wing width, antennal clava broad, about 3.6×as long as broad (32:9), C1 shortest, C2 and C3 subequal in length (11:12), and ovipositor 2.91× as long as hind tibia (140:48). In O. curvialata the fore wing is 4.2× as long as broad, longest marginal fringe 1.3× as long as wing width, antennal clava narrow, about 4.7× as long as broad, C1 longer than C2, C3 longest, and ovipositor 2.67× as long as hind tibia.

Figures

FIGURES 28 – 30. Oligosita obliqua Fatma & Begum, female: 28, antenna, holotype; 29, fore wing, holotype; 30, mesosoma, holotype.