Brachymeria longiscaposa Joseph, Narendran & Joy, 1972

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 : 40-41

Taxon classification Animalia Hymenoptera Chalcididae

Brachymeria longiscaposa Joseph, Narendran & Joy, 1972 Figs 48-50

Brachymeria longiscaposa Joseph, Narendran & Joy, 1972: 343-345 (♀, Taiwan (BPBM)), 1973: 343 (keyed and repeated description); Narendran 1989: 246, 265 (keyed and commented).

Material.

1 ♀ (RMNH), "S. Vietnam: Dóng Nai, Cát Tiên N. P., c. 100 m. 19-25.iv.2007, Mal. traps. Dong trail, Mai Phu Quy & Nguyen Tanh Manh, RMNH’07”; 1 ♀ (BPBM), "Vietnam, 8-19.vii.1960, C.M. Yoshimoto"; 1 ♀ (BPBM), "Vietnam, Fyan (1200 m) 11.vii.-9.viii.1961".

Diagnosis.

This species comes near Brachymeria secundaria (Ruschka) in the key to species by Narendran (1989), but differs from Brachymeria secundaria in having: 1) scape longer than combined length of F1, F2, F3 and F4 (in Brachymeria secundaria scape shorter than F1, F2, F3 and F4); 2) pre-orbital carina well developed and joining malar ridge (in Brachymeria secundaria pre-orbital carina indistinct) and 3) scutellum not high in lateral view, sloping down gently posteriorly (in Brachymeria secundaria scutellum high in lateral view, subvertical posteriorly).

Description

(female from Cát Tiên N. P.). ♀, length of body 2.4 mm.

Colour. Black with following parts as follows: eye gray with pale yellow reflecting spots; ocelli pale reflecting yellow; tegula pale whitish yellow; antenna black with apex of clava pinkish brown; all coxae concolorous with mesosoma; trochanters dark brown; fore and mid femora black with base and apex pale yellow; hind femur black with apex pale yellow; all tibiae black with base and apex yellow (the yellow colour of base and apex weakly connected dorsally in fore tibia); tarsi yellow; telotarsi brown; arolium white at apex; fore wing hyaline with veins dark brown. Pubescence on body white.

Head. Width of head in anterior view 1.2 × its height, width in dorsal view twice its length, equal to width of mesosoma (excluding tegulae); vertex shallowly pitted on POL and adjacent area behind, pits deeper in other parts of vertex; interstices and inside of pits reticulate, and weakly carinate. POL 3 × OOL; AOL 0.5 × POL; interocular distance 4.3 × POL. Scrobe not reaching anterior ocellus parascrobal space shallowly punctate and rugose; area below scrobe with a relatively small smooth area in middle; lateral margins of scrobe slightly produced anteriorly; pre-orbital carina distinct, reaching malar ridge; post-orbital carina reaching geno-temporal margin; height of malar space 0.2 × eye profile; anterior genal angle 70° to the vertical axis; posterior genal angle subvertical and obtuse; eyes very minutely and sparsely pubescent. Antenna with scape not reaching anterior ocellus; radicula 0.2 × length of scape; relative L:W of antennal segments:scape = 16:4; pedicel = 4:4; ring segment = 1:3; F1 = 3:5; F2 = 4:5; F3 = 4:5; F4 = 4:5; F5 = 4:5; F6 = 4:5; F7 = 4:5; clava = 10:5.

Mesosoma. Pronotum, mesoscutum and scutellum with close setigerous pits, interstices narrower than half diameter of a pit, weakly carinate, rugose; pronotum 3.1 × as broad as long, as long as mesoscutum (excluding tegulae); posterior margin of pronotum concave; middle lobe of mesoscutum 1.6 × as broad as its length; scutellum as long as mesoscutum, as long as broad and apex rounded; propodeum 70° declining to the vertical axis of scutellum; postspiracular teeth indistinct.

Wings. Fore wing 2.7 × longer than wide; relative length of CC = 21; SMV = 18; parastigma = 3; MV = 14; PMV = 4; STV = 2.

Legs. Hind coxa smooth and shiny dorsally, closely pitted and pubescent on ventral side, ventro-mesal tooth absent; hind femur 1.7 × as long as broad, inner basal tooth absent; outer ventral margin with a row of 10 differently shaped teeth.

Metasoma. Metasoma as long as mesosoma in lateral view, 1.7 × as long as its height; T1 smooth and shining, almost reaching middle of metasoma, its posterior margin straight; T2 faintly shagreened, 0.3 × as long as T1 in dorsal view; T3, T4 and T5 weakly shagreened; T6 reticulate without distinct pits; ovipositor sheath visible in dorsal view.

Male. See Joseph, Narendran and Joy (1973).

Host.

Unknown.

Distribution.

Vietnam, China (Taiwan).