Biroia baishanzuensis, Tang, Pu, Liu, Zhen & Chen, Xue-Xin, 2012

Tang, Pu, Liu, Zhen & Chen, Xue-Xin, 2012, The genus Biroia Szépligeti, 1900 (Hymenoptera, Braconidae, Agathidinae) in China, with description of two new species, Zootaxa 3519, pp. 69-76 : 70-72

Biroia baishanzuensis sp. n.

( Figs 1–7 )

Description. Holotype, Ƥ, length of body 9.4 mm, of fore wing 8.2 mm, ovipositor sheath 7.2 mm.

Head. Antennal segments 49, length of third segment 1.5 times fourth segment, length of third, fourth and penultimate segments 2.5, 1.7 and 2.0 times their width, respectively; apical antennal segment 1.6 times as long as penultimate segment; length of maxillary palp 0.5 times height of head; in dorsal view length of eye 1.8 times temple; temple gradually narrowed posteriorly; POL:OD:OOL = 19:12:30; vertex without a distinct longitudinal furrow posteriorly; face elongate, with dense and fine punctation laterally, shiny and sparsely punctate medially; frons smooth, two strong lateral carinae extending up near rim of antennal sockets; vertex and temple with sparse fine punctures.

Mesosoma. Length of mesosoma 1.75 times its height; pronotal trough smooth medially, with sparse fine punctures dorsally and crenulate posteriorly; area near lateral carina of mesoscutum smooth anteriorly, crenulate posteriorly; mesoscutum shiny with very sparse minute punctures; notauli completely absent; scutellar sulcus 0.5 times as long as dorsal face of scutellum and with 3 strong carinae; precoxal sulcus wide, largely crenulate, five long carinae connected with prepectal carina anteriorly; mesopleuron above precoxal sulcus shiny and nearly smooth with very sparse distinct punctures; mesopleuron below precoxal sulcus with sparse distinct punctures; metapleuron setose with sparse distinct punctures dorsally, largely areolate-rugose ventrally; propodeum with a large areola and costulae developed, area of areola with 3 transverse carinae; propodeal spiracle large mediumsided, 2.0 times as long as wide.

Wings. Fore wing: second submarginal cell wide rectangular; vein SR1 weakly curved; r:3-SR:SR1 = 5:10:50; r:2-SR:3-SR:r-m = 5:11:10:11. Hind wing: vein M+CU 0.6 times as long as vein 1-M.

Legs. Length of hind femur, tibia and basitarsus 2.9, 5.8 and 9.3 times their width, respectively; hind femur (as remainder of legs) with strong setae; length of outer and inner spur of middle tibia 0.4 and 0.6 times middle basitarsus, respectively; length of outer and inner spur of hind tibia 0.3 and 0.45 times hind basitarsus; fore and middle tarsi slender.

Metasoma. Shiny smooth; first tergite distinctly widened subposteriorly and then narrowed apically; length of first tergite 1.4 times as long as its apical width; dorsal carinae absent; first tergite with long erect setae laterally; second tergite with large basal round area bordered by a groove; latero-posterior corners of third tergite with a dense cluster of setae; ovipositor sheath 0.9 times as long as fore wing.

Colour. Black; galea, palpi, mandible, fore tarsus brown; spurs of middle and hind tibiae black; wing membrane black.

Material examined. Holotype: Ƥ, Zhejiang Prov., Qingyuan Baishanzu, 1100m, 23.VII.1963, Jin Gentao, No. 34021311 ( SEMS).

Distribution. China (Zhejiang).

Biology. Unknown.

Etymology. From the mountain Baishanzu, type locality of the species.

Diagnosis. This new species is very similar to B. fuscicornis ( Cameron) from Malaysia, Borneo, Indonesia, Singapore, Thailand and Vietnam (van Achterberg and Long, 2010; Sharkey and Clutts, 2011), but differs in having wing membrane black; length of hind femur shorter and wider, 2.9 times their width; vein SR1 weakly curved and marginal cell shorter and wider. This new species is also very similar to B. hirsutus sp. n., but differs in having metapleuron and hind coxa sparsely setose; vertex without a longitudinal furrow posteriorly and spurs of middle and hind tibiae black.

Figures

FIGURE 1. Biroia baishanzuensis sp. n. female, holotype. Habitus lateral.

FIGURES 2 – 7. Biroia baishanzuensis sp. n. 2, fore and hind wings; 3, hind femur and tibia, lateral aspect; 4, mesosoma, lateral aspect; 5, head, lateral aspect; 6, head, dorsal aspect; 7, head, front aspect.