Ileanta laotica, Riedel, 2017

Riedel, Matthias, 2017, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Southeastern Asia: 3. Heresiarchini, Linzer biologische Beiträge 49 (1), pp. 895-917 : 909-910

Ileanta laotica nov.sp.

Holotypus: ♀ Laos, Hua Phan Prov., Ban Saleui, Phon-Pan-Mt., 20°13´30´´N 103°59´26´´E, 1350- 1900 m, 2.V.2012, leg. C. Holzschuh & natives (Linz).

D e s c r i p t i o n of ♀: Body length 16 mm. Flagella lanceolate, with 42 segments. 1 st flagellomere length 3.1x width, widest flagellomeres about 1.8x wider than long. Temples strongly narrowed behind eyes, length 0.35x eye width. Distance of lateral ocelli from eyes 1.0x their diameter. Length of malar space 0.3x width of mandibular bases. Sides of pronotum punctate dorsally, smooth ventrally. Mesoscutum densely and superficially punctate, finely granulate, but shining. Mesopleura and metapleura punctate, smooth between punctures. Scutellum flat, with scattered puncture, carinate in the basal 0.7. Structure of propodeum see fig. 6 . Hind coxae punctate, with strong scopa. Hind femora punctate but almost smooth in the ventral half, length 4.0x width. Hind metatarsi lamelliform extended in their middle ( fig. 7 ). Areolets almost quadrangular. Metasoma strongly oxypygous. Postpetiole punctate laterally and striate centrally. Thyridiae width 1.0x width of their interval, interval as wide as median field of postpetiolus. 2 nd tergite length 1.05x width. 2 nd and 3 rd tergites punctate and strongly aciculate centrally, fourth tergite with fine basal aciculation ( fig. 5 ). Tergites 5-7 almost smooth.

Color: Black with extensive pale yellow coloration. Cream-yellow are head (except black median frons, ocellar field and occiput), flagellomeres 9-15, scapes ventrally, propleura, anterior and upper margins of pronotum, two longitudinal stripes on mesoscutum, ventral halfs of mesopleura (confluent at epicnemial carina), prescutellar carinae, sides and apex of scutellum, carinal triangles, frontal spots on areae spiraculiferae, hind carinae of areae dentiparae, posterolateral triangular spots on tergites 1-3, apical spot on tergite 6, tergite 7 completely, 1 st sternite, membranous folds on sternites 2-4, and apical margins of all sternites, fore and middle coxae, all trochanters and trochantelli, ventral stripes on hind coxae, fore and middle legs (except brownish caudal stripes). Hind legs black, hind tibiae with brownish-yellow subbasal rings. Pterostigmas dark brown.

Remark: This new taxon is closely related to I. trochanterata CAMERON (description see HEINRICH, 1969: 109-110) but differs by its completely black fourth tergite, black area superomedia, yellow stripes on mesoscutum and subbasal yellowish ring of hind tibiae.

Figures

Figs 5-7: Ileanta laotica nov.sp. HT: (5) metasoma, (6) propodeum, (7) hind metatarsus.