Wroughtonia nigrifemoralis Yan et van Achterberg

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 : 438-440

Wroughtonia nigrifemoralis Yan et van Achterberg , sp. nov.

( Fig. 19 )

Description. Female. Length of body (excluding ovipositor sheath) 9.2 mm, of setose part of ovipositor sheath 6.9 mm, of fore wing 6.9 mm.

Head. Antennal segments 39, length of third segment 1.1 times fourth segment; length of third, fourth and penultimate segments 3.6, 2.8 and 1.3 times their width, respectively; length of maxillary palp 1.6 times height of head; head in frontal view 0.8 times as long as wide; length of eye in dorsal view 1.3 times temple; length of malar space 1.5 times basal width of mandible and 0.6 times maximum width of eye; POL:OD:OOL = 10:7:19; vertex punctate; temple punctate, but foveolate-punctate near mandible; occipital carina complete and distinct; frons crestshaped elevated and densely punctate latero-posteriorly, punctate-crenulate latero-anteriorly, and medially punctate with a strongly protruding lamella; face rugose-reticulate; clypeus weakly convex, reticulate-punctate.

Mesosoma. Length twice its height; pronope deep, U-shaped; side of pronotum medially coarsely crenulate, dorsally densely punctate and ventrally rugose-reticulate; notauli wide, deep and crenulate; scutellum densely punctate; prepectal carina complete; precoxal sulcus shallow and narrow, punctate; mesoscutum punctate; scutellar sulcus with several carinae; metanotum with a complete median carina; propodeum coarsely rugose-reticulate, baso-laterally punctate, with a short medio-longitudinal carina and a transverse carina anteriorly.

Wings. Fore wing: 3.3 times as long as wide; 1-M curved; pterostigma 3 times as long as wide; r:3-SR:SR1 = 13:12:74; 2-SR:3-SR:r-m = 18:12:10; 1-M:m-cu = 25:13; SR1 almost straight; cu-a inclivous and interstitial; r-m inclivous. Hind wing: 1-M:1r-m = 13:24; cu-a inclivous.

Legs. Length of fore tarsus 1.2 times fore tibia; length of femur, tibia and basitarsus of hind leg 3.3 (excluding tooth), 10.1 and 5.4 times their width, respectively; length of outer and inner hind tibial spur 0.31 and 0.24 times basitarsus, respectively; hind femur robust, ventrally rugose and with a wide flange ( Fig. 19 D).

Metasoma. First tergite widened posteriorly, its dorsal carinae distinct in basal 0.7, rugose-reticulate medioposteriorly, latero-posteriorly coarsely punctate; length of first tergite 1.1 times its apical width ( Fig. 19 C); second tergite rather weakly punctate sublaterally and remainder smooth; ovipositor sheath 1.7 times as long as metasoma, 1.7 times as long as hind tibia and as long as fore wing.

Colour. Black. Basal fourth of maxillary palp and labial palp darkened (but apical segment of maxillary palp yellow); fore and middle trochanters and trochantelli, femora and tibiae yellowish brown; coxae and hind trochanter and trochantellus, femur and tibia black; tarsi and 11th-18th antennal segments whitish yellow or ivory, 10th segment brownish; pterostigma and most veins dark brown; wing membrane slightly infuscate.

Variation. Body length (excluding ovipositor sheath) 9–12 mm; fore wing length 7–9 mm. Number of white or ivory antennal segments is variable, always 12th -14th segments ivory, from 11th –18th segments up to only 11th -14th segments may be white or ivory (and 15th and 16th segments brown); dorsal carinae of first tergite distinct in basal 0.7-0.9 of tergite; lamelliform frontal protuberance subparallel-sided or narrow triangular in lateral view, more or less protruding posteriorly; fourth and fifth tarsal segments whitish yellow; ivory or brown.

Male. Unknown.

Material examined. Holotype, ♀, China, Shaanxi prov., Huochitang, 3–5.VIII.1998, Yiping Wang , No. 200011587 ( ZJUH) . Paratypes: 7♀♀, China, Henan prov., Luoshan, Ling Mt., 22.V.2000, Ping Cai , No.

200101853, 200101860, 200101861, 200101862, 200101875, 2001018691, 200101907 (ZJUH); 1♀, China, Henan prov., Luanchuan, Longyuwan, 9–20.VIII.1996, Zuyao Liu , Weinian Zhang et Haisheng Yin , No. 34021370 ( SEMS) ; 1♀, China, Beijing, Shangfang Mt., 9.VI.1982, Shufen Wang , No. IOZ(E)1689932 ( IZAS) ; 4♀♀, NW China, Shaanxi prov., Yunyangba, Ningshaan, c 1300 m, 24.vi.2011, 33°33’N 108°32’E, Jiangli Tan ( NWUX, RMNH) ; 2♀, NW China, Shaanxi prov., Guanghuojie, Qinling Mts, c 1000 m, 27.vi.2013, Jiangli Tan ( NWUX) .

Comparative diagnosis. This new species is similar to Wroughtonia cornuta (Cameron, 1886) from Japan, Korea and Far East Russia, because it has a similar shaped lamelliform frontal protuberance, the hind coxa black and vein cu-a of fore wing distinctly inclivous and parallel with vein 3-CU1. However, the frontal protuberance of W. cornuta is wider than in the new species, vein 2-SR+M of the fore wing is shorter and it has a distinct ventral tooth at the hind femur (fig. 41 in van Achterberg, 1987). Differs from W. anastasiae Belokobylskij by having antenna with a white band (absent in W. anastasiae ), vertex posteriorly and temple (except ventrally) finely punctate with large smooth interspaces (no distinct smooth interspaces and coarsely punctate-areolate or coarsely areolate-rugose, respectively) and third tergite smooth (densely finely sculptured).

Host. Unknown.

Etymology. The name is derived from “ nigros ” (Latin for “black”) and “ femora ” (Latin for plural of “femur”), because of the black hind femur.

Distribution. China (Shaanxi, Henan, Beijing).

Figures

FIGURE 19. Wroughtonia nigrifemoralis sp. nov., ♀, holotype. A, wings; B, mesosoma, lateral aspect; C, first-third 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.