Tanycoryphus masii, 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 : 137-138

Taxon classification Animalia Hymenoptera Chalcididae

Tanycoryphus masii sp. n. Figs 195, 196, 197-199

Type material.

Holotype, ♀ (RMNH), "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”.

Diagnosis.

In the key to species by Narendran (1989) this new species comes to Tanycoryphus merisicornis (Masi, 1929), but differs from it in having: 1) pronotal carina absent medially (in Tanycoryphus merisicornis pronotal carina prominent medially); 2) width of fore tibia half width of fore femur (in Tanycoryphus merisicornis width of fore tibia 0.7 × width of fore femur); 3) F1 longer than F2 (in Tanycoryphus merisicornis F1 not longer than F2), and 4) each lateral ocellus connected to eye margin by a cross carina (no such carina in Tanycoryphus merisicornis ).

Description.

Holotype, ♀, length of body 8.5 mm.

Colour. Black but eyes pale yellow with reflecting yellow spots, ocelli pale reflecting yellow, tegula yellowish brown and legs reddish brown except black fore and hind coxae; wings hyaline with slight brownish tinge; pubescence on face and gena silvery; pubescence on vertex, pronotum and mesoscutum slightly yellowish except silvery bunch on posterior corners of pronotum and anterior outer corners of scapulae; pubescence on metasoma golden yellow.

Head. Width of head 1.2 × its height in anterior view, a little wider than mesosoma (24:21), 2.6 × its length in dorsal view; pre-orbital carina running upwards weakly joining each other behind anterior ocellus; post-orbital carina running upwards to vertex; MS represented as a malar ridge, height malar space 0.4 eye height in profile; eyes bare, eye length in profile 0.7 × eye height; geno-temporal furrow indistinct due to dense pilosity on gena; scrobe not quite reaching anterior ocellus, cross striate; POL 2.6 × OOL; AOL as long as OOL; LOL as long as AOL; minimum width between eyes in dorsal view 2.4 × POL; each lateral ocellus and vertex with deep, close setigerous pits; face and gena densely pubescent; antenna inserted close to clypeus; radicula 0.3 × length of scape, scape almost reaching anterior ocellus; antennal formula 11171; relative L:W of antennal segments:scape = 25:4; pedicel = 3:4; anellus = 2:4; F1 = 8:6; F2-F4 = 6:6; F5-F7 = 5:6; clava = 5:9.

Mesosoma. Pronotum with anterior carina obsolescent in median part (visible on sides only), with deep, close setigerous pits, interstices narrower than diameter of a pit, rugulose; mesoscutum with relatively smaller sized close pits on anterior part, pits becoming slightly larger and more widely spaced towards posterior part; notauli distinct and pitted; area surrounding pronotal spiracle with dense white pubescence; tegula pu bescent; scutellum with close, deep, setigerous pits, interstices narrower than diameter of a pit; apex of scutellum widely emarginated with two teeth; axillula densely pubescent just behind tegula; propodeum with two submedian carinae enclosing areola and deep pits; other areas with areolae and pits; sublateral carinae distinct; lateral teeth absent.

Wings. Fore wing 1.7 × as long as wide; relative length of fore wing CC and veins: CC = 22; SMV = 19; MV = 5; PMV = 7; STV = 2; CC 11 × as long as wide.

Legs. Hind coxa without a dorso-basal tooth; hind femur without an inner basal tooth, with a row of teeth on ventral margin in two lobes, distal lobe larger than proximal lobe; hind tibia densely pubescent on distal half, with characteristic broad apex and spur, with outer carina resent.

Metasoma. Metasoma a little longer than mesosoma (40:36); T1 smooth and shiny, without basal carinae, posterior margin convex, a little shorter than half length of metasoma; T2 to T5 densely pubescent and micro-sculptured; T6 with distinct close setigerous pits; epipygium carinate at middle, a little shorter than T6 (9:10); ovipositor sheath 0.44 × length of epipygium.

Male. Unknown.

Host.

Unknown.

Etymology.

Named after Luigi Masi (1879-1961), for his great contributions to the taxonomy of Chalcidoidea.