Gastrotrypes carinatus 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 carinatus

description: Gastrotrypes carinatus Sunita et Rajmohana sp. n.
(Figs 7–11)
Material examined: Holotype (Reg. No. 27898/H3), female on card labelled INDIA: Kerala, Kasaragod, Cheemeni (12°14.501’, 75°14.216’); 08.01.17, coll. Manoj K. Paratype (Reg. No. 27899/H3): 1 female, with the same collection data as that of the holotype.
Diagnosis: Frons, vertex and occiput finely reticulate. Hyperoccipital carina present; OOL subequal to OD; A7–A10 nearly subequal in length; T5 elongate,>2.5× as long as wide.
Description: Female (holotype) body length = 0.90 mm.
Body shiny black; A1–A2 and legs except coxae, yellowish brown; coxae dark brown; A3–A10 brown; last segment of tarsi slightly darkened.
Head: FCI = 1.1, LCI = 1.5 (Fig. 9); head 1.1× as wide as mesosoma, rounded. Frons, gena, vertex and occiput finely reticulate, sculpture effaced on lower frons (Fig. 10); inner orbits bordered by a row of sparse white setae; upper and lower frons with sparse setae; hyperoccipital carina distinct; occiput without any sculpture below hyperoccipital carina, but with a concave carina medially; eyes with extremely sparse micropilosity, visible only in high magnifications; (Fig. 9); ocellar triangle finely reticulate; OOL:OD:POL:LOL = 2:2:15:6; OOL subequal to OD; IOS 1.3× eye height and 0.68 of head width; antenna with 10 segments; proportion of length to width of antennomeres A1–A10 being 14:3; 3:2; 0.45:0.7; 4.9:2.4; 3.66:2.1; 1:0.8; 4.2:2.8; 4.2:2.8; 4.2:2.8; 4.9:2.45 respectively, A7 to A9 subequal, 1.5× as long as wide; (Fig. 11). A10, not as wide as A9, 1.16× as long as A9.
Mesosoma: Smooth and shiny; 1.5× as long as wide; lateral pronotal area with a few white scattered setae; mesoscutum without notauli, sparsely setose, with a small patch of reticulation on either side anterolaterally; 0.9× as long as wide; hind margin with a mid-lobe extending 0.4× of mesoscutellum (Fig. 8,10); median lobe as long as wide; pronotum visible as a wide zone, not angular at sides; cervical area with transverse irregular striae; pronotum smooth and shiny, setose; scutoscutellar sulcus not distinct; mesoscutellum slightly wider than long, densely setose; median and lateral propodeal carina slightly raised; anterolateral propodeal area coarse, posterolateral propodeal area densely setose; lateral pronotal area with a few white scattered setae; mesopleura and anterior margin of metapleura smooth, rest with dense yellow recumbent setae (Fig. 11). Forewing 0.82× length of body and 2.2× longer than wide, with fine and dense microtrichia; marginal cilia well developed, 0.25× forewing width (Fig. 7), hindwing marginal fringe 0.6× as maximum width of wing.
Metasoma: 2.2× as long as wide and 0.9× of head and mesosoma combined; T5 elongate and tubular; length and width of T1–T5 being 10: 24; 38: 44; 11:30; 12: 15 and 27:11 respectively; T1 with one median carina and two adpressed submedian carinae; T2 submedially striate longitudinally at its anterior one-fourth, rest smooth; T3 and T4 smooth and shiny; T5 2.5× as long as wide with white setae; basal half of T5 densely and finely striolate (Fig. 10).
Male: Unknown.
Etymology: The species is named carinatus, after their distinct hyperoccipital carina as well as the emarginated carina below it.
Comments: Gastrotrypes carinatus sp. n. can be easily distinguished from other species by the presence of a median longitudinal carina on T1. The species resembles G. manii in the presence of a hyperoccipital carina and also an elongate T5. However, the finely reticulate sculpture on the frons, vertex and occiput in G. carinatus (smooth in G. manii), and a combination of several characters like differences in length to width ratio of the claval segments and much smaller marginal fringe of wings serve to separate the two species.
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 242-244, DOI: 10.17109/AZH.68.3.239.2022, http://zenodo.org/record/7160937