Wroughtonia eurygenys Yan et Chen

Yan, Cheng-Jin, Achterberg, Cornelis Van, He, Jun-Hua & Chen, Xue-Xin, 2017, Review of the tribe Helconini Foerster s. s. from China, with the description of 18 new species, Zootaxa 4291 (3), pp. 401-457 : 431-433

Wroughtonia eurygenys Yan et Chen , sp. nov.

( Fig. 15 )

Description. Female. Length of body (excluding ovipositor sheath) 10.2 mm, of setose part of ovipositor sheath 8.4 mm, of fore wing 8.4 mm.

Head. Antennal segments 37, length of third segment almost equal to fourth segment; length of third, fourth and penultimate segments 3.5, 3.4 and 1.5 times their width, respectively; length of maxillary palp 1.5 times height of head; head 0.8 times as long as wide in frontal view; length of eye 1.2 times temple in dorsal view; length of malar space 1.5 times basal width of mandible and 0.4 times maximum width of eye; malar suture present. POL:OD:OOL = 12:5:22; vertex sparsely punctate and shiny; temple smooth, but rugose near mandible; occipital carina complete and distinct; frons crest-shaped elevated and smooth latero-dorsally, reticulate latero-ventrally and medially smooth with a strongly protruding lamella; face coarsely rugose; clypeus reticulate.

Mesosoma. Length 2.5 times its height; pronope deep and wide; side of pronotum medially and ventrally coarsely crenulate, postero-dorsally rugose-punctate and dorsally densely punctate; notauli narrow and deep, crenulate; mesoscutum punctate; scutellum punctate, lateral carinae absent; prepectal carina complete; precoxal sulcus largely nearly smooth and medially punctate; scutellar sulcus with one carina and several lateral crenulae; metanotum with a complete median carina; propodeum rugose-reticulate, smooth basally, with a mediolongitudinal carina, a transverse carina and pentagonal areola medially.

Wings. Fore wing: about 3 times as long as wide; 1-M slightly curved; pterostigma 3.7 times as long as wide; r:3-SR:SR1 = 11:14:87; 2-SR:3-SR:r-m = 18:14:15; 1-M:m-cu = 29:12; SR1 almost straight; cu-a inclivous and postfurcal; r-m inclivous. Hind wing: 1-M:1r-m = 12:18; cu-a inclivous.

Legs. Length of fore tarsus 1.5 times fore tibia; length of femur, tibia and basitarsus of hind leg 4.0 (excluding tooth), 9.8 and 6.6 times their width, respectively; length of outer and inner hind tibial spurs 0.21 and 0.14 times basitarsus, respectively; hind femur rather robust, with a sharp tooth ventrally ( Fig. 15 D).

Metasoma. First tergite widened posteriorly, reticulate, its dorsal carinae distinct and complete; length of first tergite 1.4 times its apical width ( Fig. 15 C); second tergites smooth; ovipositor sheath 1.8 times as long as metasoma, 1.9 times as long as hind tibia and as long as fore wing.

Colour. Black; palpi, fore and middle legs, hind trochanter, trochantellus and femur yellow; tegulum, first tergite, hind coxa and tibia reddish brown; pterostigma and most veins dark brown; antenna dark brown, but 13th -18th segments ivory; wing membrane slightly infuscate.

Male. Unknown.

Material examined. Holotype, ♀, China, Shaanxi prov., Zhouzhi, Banfangzi, 3.VII.1998, Yiping Wang , No. 200011638 ( ZJUH).

Comparative diagnosis. This new species is similar to W. spinator (Lepeletier) , but differs in having the length of eye 1.2 times temple in dorsal view (1.6 times temple in W. spinator ); ovipositor sheath 1.1 times as long as fore wing (0.9 times as long as fore wing); propodeum with a transverse carina (without a transverse carina) and dorsal carinae of first tergite complete (absent in apical fifth).

Host. Unknown.

Etymology. The name is derived from “ eury ” (Latin for “wide”) and “ genys ” (Latin for “gena, temple”), because of the wide temple.

Distribution. China (Shaanxi).

Figures

FIGURE 15. Wroughtonia eurygenys sp. nov., ♀, holotype. A, wings; B, mesosoma, lateral aspect; C, first and second metasomal tergites, dorsal aspect; D, hind femur and tibia, lateral aspect; E, face and clypeus, anterior aspect; F, habitus, lateral aspect; G, head, lateral aspect; H, head, dorsal aspect; I, propodeum, medio-dorsal aspect.