Idris teestai Veenakumari

Kamalanathan, Veenakumari, Mohanraj, Prashanth & Khan, F. R., 2015, ' The adikeshavus-group': A new species group of Idris Foerster (Hymenoptera, Platygastridae) from India, with descriptions of five new species, Deutsche Entomologische Zeitschrift 62 (2), pp. 247-260 : 253-254

Taxon classification Animalia Hymenoptera Platygastridae

Idris teestai Veenakumari sp. n. Figures 35-41

Holotype

(Female). (ICAR/NBAIR/P856) INDIA: Sikkim, Gangtok, Hanuman Tok, SN, 12.x.2008.

Type locality.

INDIA: Sikkim.

Description of female.

Color and size (Fig. 35). Head, mesosoma dark brown with lateral margin of mesoscutum and metanotum greyish-brown; metasoma brown except T7 which is а shade paler, horn dark brown, legs dark brown; radicle yellowish brown, rest of antennomeres brown except dark brown clava. Body length = 0.834 mm. (n=1).

Head (Figs 39, 41). FCI=1.23; LCI=1.68; IOS 0.61 × width of head; lower frons smooth; upper frons and vertex setigerous punctate; eyes (L:W = 10.6:8.5) densely setose; facial striae strong; central keel long, 0.5 × height of head; POL>LOL in ratio of 15.8:8.6; interantennal process projecting; length and width of antennomeres A1-A7 in ratio of 10.8:2.6, 3.9:2.9, 1.8:1.8, 1.2:1.9, 1.3:1.5, 1.8:2.2, 11.0:5.3, respectively; radicle long 0.37 × length of A1.

Mesosoma (Figs 40, 41). Mesoscutum (L:W = 14.4:22.2) fully reticulate, sparsely setose, setae short; notauli short (L:W = 3.2:1.1); internotular distance 0.67 × width of mesoscutum; mesoscutellum (L:W = 6.4:14.6), with same sculpture as that of mesoscutum; metascutellum smooth, narrow, uniformly rounded posteriorly; metanotal trough with weak foveae; scutoscutellar sulcus not foveate medially, weakly foveate laterally; lateral pronotal area weakly rugose; mesopleuron with weak transverse striae beneath tegula; mesopleural pit with deep foveae ventrally; metapleuron almost smooth with uneven sculpture ventrally; metapleural pit present; propodeum present as lateral lamellae anterior to horn; anterior and posterior margin of propodeum projecting as a small spine.

Forewing (Fig. 36.) (L:W = 47.9:14.6) with long marginal cilia 2.1 × width of wing; entire wing with long microtrichia; length of submarginalis: marginalis: stigmalis in ratio of 23.7:4.6:8.6 respectively; hind wing (L:W = 47.3:7.9) with short, sparse microtrichia; hind wing marginal cilia 2.18 × width of wing.

Metasoma (Figs 37, 38). (L:W = 49.8:21.8); T1 strongly costate the entire length; horn (L:W = 8.6:6.3) on T1 smooth with weak striae; striae longitudinal laterally and transverse posteriorly; T2 basally foveate, strong costae arising from these foveae; costae on T2 not reaching posterior margin; T2 posteriorly smooth; anterior margin of T3 convex as a result of which length of T2 is longer laterally; T2 subequal to T3; T3 weakly striate in anterior half, setose sublaterally; T4-T7 smooth; length and width of tergites T1-T7 in ratio of 7.5:10.1, 12.8:11.0, 12.6:21.6, 4.5:18.2, 1.7:14.2, 1.2:10.1, 9.7:8.1, respectively.

Male.

Not known.

Etymology.

The species is named ' teestai ' after the river Teesta in the state of Sikkim, from where the type specimen was collected.

Diagnosis.

This species can be easily distinguished from the other four species described here by reticulate sculpture on mesoscutum and mesoscutellum.