Antrocephalus nasutus (Holmgren, 1868)

Narendran, T. C. & van Achterberg, Cornelis, 2016, Revision of the family Chalcididae (Hymenoptera, Chalcidoidea) from Vietnam, with the description of 13 new species, ZooKeys 576, pp. 1-202 : 13-14

Taxon classification Animalia Hymenoptera Chalcididae

Antrocephalus nasutus (Holmgren, 1868) Figs 16-17

Haltichella nasuta Holmgren, 1868: 437 (lectotype, ♀ (NHRM), Philippines, Manila (lectotype designation by Narendran, 1989).

Antrocephalus rufipes Cameron, 1905: 95 (lectotype, ♀, Sarawak, Trusan (BMNH, No. 5-274), Narendran, 1989 designated and synonymised with Antrocephalus nasutus (Holmgren)).

Antrocephalus momius Masi, 1932a: 43 (lectotype, ♀, Formosa (= Taiwan), Kankau (DEI), Narendran, 1989 designated and synonymised with Antrocephalus nasutus (Holmgren)).

Antrocephalus nasutus ; Baltazar 1966: 145.

Antrocephalus longidentata Roy & Farooqi, 1984: 10 (♀, India, Orissa (INPC), synonymised with Antrocephalus nasutus by Narendran, 1989).

Material

(RMNH, IEBR). 1 ♀, "S. Vietnam: Dóng Nai, Cát Tiên N. P., Ficus trail, c. 100 m, 9-30.iv.2007, Malaise trap, M.P. Quy & N.T. Manh, RMNH’07”; 2 ♂, id., but 13-20.v.2005 and Botanical Garden; 1 ♀ + 2 ♂, "Vietnam: Ninh Thuân, Núi Chúa N. P., northeast part, 90-150 m, 23-30.v.2007, Malaise trap, C. v. Achterberg & R. de Vries, RMNH’07”; 1 ♂, "S. Vietnam: Dak Lak, Chu Yang Sin N. P., n[ea]r dam, c, 500 m, Malaise traps, 3-9.vi.2007, C. v. Achterberg & R. de Vries, RMNH’07”.

Diagnosis.

Similar to Antrocephalus sepyra (Walker) in general appearance, but differs from it in having the hind femur relatively longer than that of Antrocephalus sepyra , fore wing with brown infuscation behind MV and apex of scutellum deeply incised. It differs from Antrocephalus fascicornis (Walker) in having the face not as convex as that of Antrocephalus fascicornis and hind femur not as wide as that of Antrocephalus fascicornis . This species comes near Antrocephalus atulyus Narendran in the key to species of Antrocephalus by Narendran (1989), but Antrocephalus atulyus differs from this species in having 1) fore wing with golden pubescence (in Antrocephalus nasutus fore wing without golden pubescence); 2) interstices on pronotum and anterior part of mesoscutum smooth and shiny (in Antrocephalus nasutus interstices on pronotum and anterior part of mesoscutum rugulose) and 3) hind femur with prominent and long depression separating proximal and distal lobes (Fig. 16) (in Antrocephalus nasutus depression separating proximal and distal lobes shorter).

Host.

Unknown.

Distribution.

India, Indonesia (West Irian), Malaysia, Philippines, Singapore, Papua New Guinea ( Narendran 1989) and Vietnam (new record).

Variation.

In Vietnamese specimens the fore wing has two patches and the hind tibia is blackish from base to middle and reddish on remaining part.