Sthulapada neopadata, 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 : 132-133

Taxon classification Animalia Hymenoptera Chalcididae

Sthulapada neopadata sp. n. Figs 189, 190-191

Material.

Holotype (RMNH), ♀, "Vietnam: Dak Lak, Chu Yang Sin N. P., n[ea]r dam, 600-1000 m, 2-10.vi.2007, Mal. traps 9-11, C. v. Achterberg & R. de Vries, RMNH’07”.

Diagnosis.

This new species differs from the type species Sthulapada padata Narendran in having: 1) pits on mesoscutum and scutellum close, with interstices narrower than half a diameter of a pit and rugulose (in Sthulapada padata interstices of mesoscutum and scutellum wider, smooth, shiny and not carinate); 2) fore wing without brownish infuscation adjoining MV (in Sthulapada padata with brownish infuscation adjoining MV); 3) distal end of SMV not clavate (in Sthulapada padata distal end of SMV clavate); 4) hind coxa with a weak dorso-basal tooth (in Sthulapada padata hind coxa without a dorso-basal tooth); 5) hind femur 0.6 × as broad as long (in Sthulapada padata hind femur 0.7 × as broad as long); 6) hind tibia width 0.2 times its length (in Sthulapada padata hind tibia width 0.3 times its length); 7) clava 2.3 × as long as F7 (in Sthulapada padata clava 2.6 × as long as F7); 8) F1 shorter than F2 (in Sthulapada padata F1 as long as F2); 9) metasoma mainly black (in Sthulapada padata metasoma mostly yellowish brown); 10) hind coxa black with a brownish yellow patch apically (brownish yellow more extensive on ventral apical part than dorsal apical part; in Sthulapada padata hind coxa mostly yellow with a black or reddish black patch dorsally from base to slightly beyond middle).

Description.

Holotype, ♀, length of body 4.3 mm.

Colour. Black, but eyes and ocelli pale grayish yellow; antenna orange yellow; fore leg pale brownish yellow except black coxa; mid leg similar to fore leg except coxa black with yellowish brown tinge, especially towards its distal end; hind coxa black with apical part brownish yellow; hind femur orange yellow; hind tibia orange brown with ventral part medially black; tarsi orange brown; telotarsi black; wings hyaline, veins dark brown; pubescence on body white.

Head. Width of head in anterior view a little more than its height (32:29); width in dorsal view about twice its length, a little wider than mesosoma (excluding tegulae) (31:28); occiput concave; surface of face, vertex and occiput with close umbilicate pits, interstices carinate; POL 4 × OOL; AOL 2.3 × OOL; distance between eye in dorsal view 2.4 × POL; pre-orbital carina starting from malar ridge running upwards towards vertex and meeting each other behind anterior ocellus; malar sulcus forming malar ridge; geno-temporal furrow deep; scrobe reticulate, not reaching anterior ocellus, margins not carinate; malar space 0.4 times height of eye in profile; eye length in profile 0.7 × eye height; eyes bare; antenna inserted well below level of ventral margin of eyes; scape not at all reaching anterior ocellus; relative L:W of antennal segments:scape = 16:3; pedicel = 4:3; F1 = 5:3; F2-F7 = 4:4; clava = 9:4.

Mesosoma. Mesosoma with close umbilicate pits, interstices narrower than half diameter of a pit, rugulose; pronotum with two humps in the submedian part, posterior margin concave medially; apex of scutellum entire; propodeum horizontal, with distinct submedian and sublateral carinae; area between submedian carinae with 12-15 cross carinulae, spaces between carinulae smooth and shiny; area between plical carina and submedian carina alveolate; lateral paraspiracular tooth on each side weakly represented, spiracle bean-shaped.

Wings. Fore wing 2.9 × as long as its width; relative length of CC = 44; SMV = 43; MV = 6; PMV = 1; STV = 4. MV separated from SMV by a distinct break; distal end of SMV not clavate as in Sthulapada padata .

Legs. Hind coxa without a dorso-basal tooth; hind femur 0.6 × as broad as long with a strong inner basal tooth, outer ventral margin with a row of teeth extending from apex to posterior 0.6, ventral margin not distinctly bi-lobed; hind tibia with an additional extra external carina; hind tarsal segments relatively larger, wider than long; fifth tarsal segment 1.5 × as broad as fourth tarsal segment, about 3 × as long as fourth tarsal segment; claws uni-dentate.

Metasoma. Metasoma 1.3 × longer than mesosoma; T1 with 3 basal carinae; median carina shorter than lateral carinae; length of median carina 0.2 × length of T1; lateral carina 0.3 × length of T1 in dorsal view; length of T1 a little shorter than half length of metasoma; T1 smooth and shiny, its posterior margin a little convex; T2 smooth with 2 cross rows of minute setigerous pits, pits discontinues at middle in anterior row; T3-T5 rugulose with scattered pits on sides and a single row posteriorly; posterior margin of T2-T4 almost straight; posterior margin of T5 weakly concave; T6 with 7-8 cross rows of setigerous pits; epipygium carinate at middle, its median length a little longer than median length of T6 (10:9); epipygium with a distinct posteriorly directed tooth just below ovipositor sheath; ovipositor sheath about half length of epipygium medially.

Male. Unknown.

Host.

Unknown.

Distribution.

Vietnam.