Brachymeria neowiebesina, 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: 48-50

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scientific name

Brachymeria neowiebesina

sp. n.

Taxon classification Animalia Hymenoptera Chalcididae

Brachymeria neowiebesina  sp. n. Figs 56, 57-58

Type material.

Holotype, ♀ ( RMNH), "S. Vietnam: Dak Lak, Chu Yang Sin N. P., nr dam, c 500 m,, Mal. traps, C. v. Achterberg & R. de Vries, RMNH’07”. Paratype (IEBR): ♂, "Vietnam: Kom Tum, Chu Mon Ray N. P., Mal. traps, 700-900 m, 26.ix.-5.x.2006, Mal Phu Quy & Nguyen Thanh Manh, RMNH’07”.


This new species comes near Brachymeria wiebesina  Joseph, Narendran & Joy in general appearance, but differs from it in having: 1) apex of scutellum deeply emarginate and distinctly bi-lobed (in Brachymeria wiebesina  apex of scutellum weakly emarginate); 2) scape shorter than combined length of F1, F2 and F3 (in Brachymeria wiebesina  scape as long as F1, F2 and F3 combined); 3) scape yellow and remaining antennal segments black (in Brachymeria wiebesina  antenna including scape blackish red or brownish black); 4) upper margin of clypeus smoothly curved and not angulate medially (in Brachymeria wiebesina  upper margin of clypeus angulate medially); 5) clava as long as wide (in Brachymeria wiebesina  clava about 1.6 × its width); 6) clava shorter than twice length of F7 (in Brachymeria wiebesina  clava longer than twice length of F7); 7) outer ventral margin of hind femur with 9 teeth (in Brachymeria wiebesina  outer ventral margin of hind femur with 13 small teeth) and 8) T1 smooth and shiny, without any trace of minute pits (in Brachymeria wiebesina  T1 with faint minute punctures on medio-posteriorly).


Holotype, ♀, length of body 3.5 mm.

Colour. Black; tegula whitish yellow; antenna black, except yellow scape; fore and hind coxae black, mid coxa brown; all trochanters pale yellowish brown; fore and mid femora dark brown with bases and apices yellow; hind femur black with apex pale yellow; fore tibia yellow with pale brown medially; mid tibia yellow with brown medially; hind tibia dark brown with base and apex pale yellow; tarsi yellow; telotarsi brown; wings hyaline with veins dark brown.

Head. Width of head 1.2 × its height in anterior view, 3.1 × its length in dorsal view, as wide as pronotum or mesoscutum (excluding tegulae); parascrobal area not bulging; fronto-vertex 1.4 × eye height in anterior view; malar ridge present; height of malar space 0.4 × eye height in profile; eyes bare; length of eye in profile 0.6 × eye height; pre-orbital and post-orbital carinae present; scrobe not reaching anterior ocellus, separated from anterior ocellus by a diameter of anterior ocellus; POL twice OOL; AOL a little shorter than OOL (5:6); LOL equal to OOL; upper margin of clypeus smoothly curved, not angulate medially, a row of sparse setae in median third, its upper margin raised and removed from antennal sockets by about twice clypeal height in middle; interantennal projection with 6 setae on either side, labrum subangulate on distal margin, with scattered setigerous pits; face and vertex with close, umbilicate setigerous pits; interstices between pits carinate; area below antennal toruli with close pits, median smooth area absent. Antenna with scape not reaching anterior ocellus; radicula 0.3 × length of scape; relative L:W of antennal segments:scape = 9:4; pedicel = 3:4; F1 = 4:5; F2 = 4:5; F3 = 4:6; F4 = 3:6; F5 = 4:6; F6 = 3:6; F7 = 3:6; clava = 6:6.

Mesosoma. Mesosoma slightly broader than long (23:20); pronotum almost as broad as mesoscutum; pronotum, mesoscutum and scutellum with close, umbilicate, setigerous pits; interstices carinate; pilosity moderately distributed including apex of scutellum, not very densely pubescent; pronotum with anterior carina moderately strong but confined to sublateral thirds of sclerite; notauli with a row of pits; scutellum slightly convex and gradually sloping to apex, its width subequal to its length; in dorsal view apical rim deeply incised in the middle and bi-lobed; propodeum vertical to scutellum, with large deep pits and alveolae; septa of areolation relatively high; postspiracular teeth indistinct; submedian tooth of anterior margin of mesopleuron weakly developed, metapleuron densely pubescent.

Wings. Fore wing 2.4 × as long as its width; relative length of CC = 37; SMV = 32; MV = 19; PMV = 5; STV = 3.

Legs. Hind coxa with inner ventro-mesal tooth absent, with close shallow setigerous pits, fully pubescent; hind femur 1.6 × as long as broad (teeth excluded) with 9 ventral marginal teeth, first tooth relatively large, outer disc with close setigerous pits, inner disc with less pits and pubescence.

Metasoma. Metasoma ovate; in dorsal view only slightly pointed posteriorly; 0.7 × as wide as long, subequal to length of mesosoma; T1 smooth and shiny, slightly exceeding middle of metasoma, its posterior margin straight; T2 to T5 micro-sculptured and with a single row of setae; T6 with 3-4 cross rows of setigerous pits and pubescence; posterior margins of T2 to T5 concave medially; ovipositor sheath slightly visible in dorsal view, fully pubescent; hypopygium reaching base of T6.

Male. Length of body 3.2 mm. Similar to ♀ but metasoma not pointed at apex.




Named after Brachymeria wiebesina  Joseph, Narendran & Joy, because of its superficial resemblance to that species.