Ichneumonosoma de Meijere

Ichneumonosoma de Meijere, 1914: 195. Type-species, Lagarosia imitans de Meijere by original designation.

Axania Enderlein, 1920: 337 . Type-species, Axania ichneumonea Enderlein (= L.imitans de Meijere), by original designation.

The genus Ichneumonosoma was proposed by de Meijere (1914) for a single species, Lagarosia imitans de Meijere, 1911 from Java, Indonesia. Hering (1941) added I. heinrichi from Sulawesi, Indonesia. Hardy (1983) referred this genus to the Euphrantini and provided a generic diagnosis plus diagnoses for I. heinrichi and I. imitans . Hardy (1986) subsequently referred this genus to the Adramini, transferred Adrama consors Walker to Ichneumonosoma, and provided a detailed generic diagnosis and a key to the three known species. Permkam and Hancock (1995) reviewed the diagnosis of this genus and newly recorded I. consors from Australia.

Ichneumonosoma is readily recognized by its very elongate abdomen and absence of many head and thoracic setae. It resembles Soita in having a sclerotized metathoracic postcoxal bridge and lacking postocellar, genal, postpronotal, presutural supra-alar, acrostichal and katepisternal setae (Hardy, 1986). Other important characters include: head slightly broader than thorax in dorsal view; occiput convex, moderately swollen ventrally; face vertical or nearly so; antenna inserted at about middle of head in lateral view and slightly shorter than face; arista long plumose. Thorax lacking apical scutellar setae, wing with a short but distinct and pointed posterodistal lobe on cell bcu, pterostigma subequal in length to cell c. Vein R4+5 setulose dorsally to beyond level of crossvein DM-Cu. Femora not spinose ventrally. Ocellar and dorsocentral setae absent. Lateral vertical seta present. Lateral scaplular seta rudimentary.

This genus is poorly known and very rare in collections (Hardy, 1986). The host plants and biology are completely unknown. Here we describe I. quadripunctata Chen & Freidberg, n. sp. from Australia and I. triangularis Chen & Norrbom, n. sp. from Malaysia. The five currently known species are variously distributed in the Oriental (India, Thailand, Malaysia) and Australasian (Indonesia, Papua New Guinea, Australia) Regions.