Oxycoryphe neotenax, Narendran, T. C. & van Achterberg, Cornelis, 2016

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 : 120-123

Taxon classification Animalia Hymenoptera Chalcididae

Oxycoryphe neotenax sp. n. Figs 173-174, 175-176, 177

Type material.

Holotype, ♀ (RMNH) "Vietnam: Ninh Thuân, Núi Chúa N. P., northwest part, Mal. trap 17, c. 150 m, 24-30.v.2007, C. v. Achterberg & R. de Vries, RMNH’07”. Paratypes: 2 ♀ (RMNH, IEBR), "Vietnam: Ninh Thuân, Núi Chúa N. P., northeast part, Mal. traps, 90-150 m, 23-30.v.2007, C. v. Achterberg & R. de Vries, RMNH’07”; 1 ♀ (RMNH), id., but dry south part, 100-180 m, 22-29.v.2007, C. v. Achterberg & R. de Vries, RMNH’07”; 2 ♀ (RMNH, IEBR), "S. Vietnam: Dóng Nai, Cát Tiên N. P., Bird trail, Mal. traps 30-35, c. 100 m, 15-20.v.2007, C. v. Achterberg & R. de Vries, RMNH’07”.

Diagnosis.

Very similar to Oxycoryphe tenax Narendran, 1989, from Malaysia, but Oxycoryphe neotenax has the lateral ocelli close to the eyes (POL 6-8 × OOL; 3.3-4.3 × in Oxycoryphe tenax ), PMV distinctly longer than SV (about as long as SV in Oxycoryphe tenax ), the hind femur and tibia reddish to yellowish brown (brownish yellow in Oxycoryphe tenax ), the post-orbital carina not well developed (distinct in Oxycoryphe tenax ) and PMV as long as MV or longer (less developed in Oxycoryphe tenax ).

Description.

Holotype, ♀, length of body 6.0 mm.

Colour. Black with following parts as follows: eyes and ocelli pale gray; scape and pedicel pale brownish yellow; annellus, F1, F2 and F3 brownish yellow; remaining segments of antenna dark brown; apex of clava, fore coxa pale brown, remaining segments of fore and mid legs yellow; hind leg reddish pale brown; tegula pale brownish yellow; metasoma black with yellowish brown on sides from T1 to T6; epipygium and ovipositor sheath black. Pubescence pale white with slight yellowish tinge; fore wing hyaline with a brownish tinge; veins dark brown; pilosity of wing disc blackish brown.

Head. Width 1.1 × its height in anterior view; width in dorsal view 2.9 × its length, subequal to width of mesosoma; pre-orbital carina distinct meeting each other behind anterior ocellus; post-orbital carina absent; geno-temporal furrow present; scrobe cross stri ate-reticulate, reaching anterior ocellus; posterior ocellus close to eye (fig. 175), POL 6.2 × OOL; AOL twice OOL; LOL a little longer than AOL (9:8); shortest width between eyes in dorsal view 2.2 × POL; face and vertex with close, deep umbilicate, setigerous pits; MS indistinct, malar space 0.4 × eye height in profile; eyes with a few scattered minute pilosity; antenna inserted well below level of ventral margin of eyes, scape not quite reaching anterior ocellus; antennal formula 11273; relative L:W of antennal segments:scape = 29:3; pedicel = 4:4; F1 = 7:5; F2 = 7:5; F3 = 6:6; F4 = 6:6; F5 = 6:6; F6 = 6:6; F7 = 6:6; clava = 13:6.

Mesosoma. Pronotum with a tooth-like raised structure medially (but not distinctly forming a tooth as in the type species), with close setigerous pits, interstices narrower than diameter of a pit, somewhat carinate, reticulate; posterior margin of pronotum concave; mesoscutum and scutellum with close setigerous pits; interstices rugulose, narrower than diameter of a pit; apex of scutellum a little produced posteriorly; propodeum with submedian and sublateral carinae distinct, areolate, lateral teeth indistinct.

Wings. Fore wing length 3.1 × its width, densely pilose; CC about 7 × as long as MV; PMV subequal to MV, longer than STV.

Legs. Hind coxa with a weak tooth at dorso-basal side; hind femur 2.8 × as long as wide; hind tibia with an extra external carina.

Metasoma. Metasoma 1.6 × as long as mesosoma, length of pre-epipygial part of metasoma a little longer than mesosoma (27:21), but subequal to length of mesosoma in holotype; T1 with a pair of basal longitudinal carinae, each carina as long as width between each other; posterior margin of T1 to T5 smooth and shiny, T6 with shallow setigerous, micro-punctate; epipygium with close, shallow setigerous pits, with a median carina, fully pubescent.

Male. Unknown.

Host.

Unknown.

Distribution.

Vietnam.

Variation.

Length of female varies from 6.0-6.5 mm; POL 6-8 × OOL; fore wing with a small infuscation below SMV in some specimens; 4-6 basal segments of antenna yellowish brown.