Gastrotrypes brevis Sunita et Rajmohana 2022, sp. n.
Creators: name: Sunita, Patra
name: Rajmohana, Keloth
name: Manoj, Kandoth
name: Anjana, Madathil
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Platygastridae
Gastrotrypes
Gastrotrypes brevis

description: Gastrotrypes brevis Sunita et Rajmohana sp. n.
(Figs 1–6)
Material examined: Holotype (Reg. No. 27896/H3), female on card labelled INDIA: Karnataka, Kandimakki, Coorg (12°09.545’, 075°48.262’), 27.ii.2016, coll. Manoj K. Paratype: 1 female, with same data as holotype.
Diagnosis: Frons, vertex and occiput finely reticulate; hyperoccipital carina absent; OOL subequal to OD; A7–A9 as long as wide, A10 1.5× as long as A9; marginal fringe well developed in both fore wings and hind wings; T5 not much elongate, only 1.1× as long as wide.
Description: Female (holotype) body length = 0.7 mm.
Body brown to blackish brown; basal A1 and A2 towards apex yellow, rest of antenna brown, A7–A9 blackish brown; legs including coxae yellowish brownish to brown; mandibles and tegula deep brown; body pilosity whitish brown to brown; wings hyaline.
Head: FCI = 1.2, LCI = 1.6 (Fig. 2); head almost as wide as high and 1.53× as high as long; head 1.1× as wide as mesosoma, rounded; head in front view, including frons, gena and vertex smooth and with fine reticulate impressions, a bit effaced on lower frons (Fig. 3); inner orbits bordered by a row of white setae; upper and lower frons with sparse setae; hyperoccipital carina absent; occiput towards its lower margin with closely placed irregular and concentric curved striae (Fig. 2); eyes with extremely sparse micropilosity, visible only in high magnifications; OOL:OD: POL:LOL= 2:2:20:7; IOS 1.40× eye height and 0.69× width of head; antenna with 10 segments, clava 4 segmented. antennal segments finely setose, denser on claval segments; A7 to A9 subequal in length; length to width ratio of A1– A10 being 46:9; 9:7; 0.5:0.5; 11.5:9.3; 7:6; 3.8:3.8; 11:9; 11:9; 11:9; 15:10, respectively (Fig. 5); A10 1.5× as long as wide.
Mesosoma: 1.33× as long as wide; smooth and shiny, with sparse setae; mesoscutum 1.8× as long as wide, without notauli, sparsely setose; with a small patch of reticulation on either side anterolaterally; median lobe 0.78× longer than wide and overlapping mesoscutellum to nearly one-third part of it (Fig. 6); pronotum visible as a wide zone, not angular at sides; cervical area with a few transverse irregular striae; pronotum smooth and shiny, sparsely setose; lateral pronotum and mesopleura also smooth; anterior margin of metapleura smooth, rest with dense yellow recumbent setae; scutoscutellar sulcus not distinct; mesoscutellum slightly wider than long, densely setose; lateral pronotal area with a few white scattered setae; mesopleuron and metapleuron smooth, metapleuron with dense pilosity posteriorly (Fig. 2); median and lateral propodeal carina slightly raised; anterior lateral propodeal area coarse, posterolateral propodeal area densely setose; forewing surpassing tip of metasoma, 2.22× longer than wide and with fine microtrichia; marginal cilia of forewing 0.25× wing width and that of hindwing nearly subequal to wing width (Fig. 1).
Metasoma: With 5 tergites, 2× as long as wide and length 1.2× combined length of head and mesosoma; 1.3× wide as head; length and width of T1–T5 being 3:8; 2:15; 2:7; 1:5; 6:5, respectively (Fig. 4); T1 coarse, with a raised median longitudinal carina, T2 laterally with short longitudinal striations radiating and reaching almost one-third of T2; rest smooth; T3 and T4 anteriorly with a transverse row of sparse and widely placed white setae (Fig. 6); T5 1.1× longer than wide, densely and irregularly striolate at its basal onefourth; S5 also with same sculpture as of T5. S1 and base of S2 densely setose. Ovipositor exserted (Fig. 1).
Male: Unknown
Etymology: The species is named brevis (= short, in Latin), due to their short claval segments.
Comments: Sculpture on frons and metasomal tergites are significant in distinguishing Gastrotrypes species (HUGGERT 1980). G. brevis sp. n. is morphologically similar to G. manii in the proportions of A8 and A9 and POL:LOL ratio. However, G. manii can be separated from G. brevis at once by their smooth frons and a distinct hyperoccipital carina. Though both G. brevis and G. vindhyensis have fine reticulations on frons, vertex and occiput and also a slightly elongate T5, both the species differ clearly in length to width ratio of antennal segments, A7–A9.
description: Published as part of Sunita, Patra, Rajmohana, Keloth, Manoj, Kandoth & Anjana, Madathil, 2022, Two New Species Of The Rare Genus Gastrotrypes Brues (Hymenoptera: Platygastridae) From India, pp. 239-246 in Acta Zoologica Academiae Scientiarum Hungaricae 68 (3) on pages 240-242, DOI: 10.17109/AZH.68.3.239.2022, http://zenodo.org/record/7160937