Wroughtonia zhejiangensis 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 : 452-454

Wroughtonia zhejiangensis Yan et van Achterberg , sp. nov.

( Fig. 27 )

Description. Female. Length of body (excluding ovipositor sheath) 9.6 mm, of setose part of ovipositor sheath 7.5 mm, of fore wing 7.5 mm.

Head. Antennal segments 38, length of third segment 1.2 times fourth segment; length of third, fourth and penultimate segments 3, 2.7 and 1.5 times their width, respectively; length of maxillary palp 1.4 times height of head; head in frontal view 0.8 times as long as wide; length of eye in dorsal view 1.4 times temple; length of malar space 1.2 times basal width of mandible and 0.5 times maximum width of eye; malar suture distinctly impressed; epistomal suture shallow; POL:OD:OOL = 10:6:17; vertex smooth and shiny; temple smooth dorsally and densely reticulate ventrally; occipital carina complete and distinct, occipital flange medium-sized, up curved and distinctly differentiated; frons crest-shaped elevated and rugose laterally, medially smooth with posteriorly protruding narrow lamella, concave posteriorly and smooth dorso-laterally ( Fig. 27 H); face coarsely rugose-punctate; clypeus densely reticulate-punctate dorsally, ventrally striate.

Mesosoma. Almost twice its height; pronope deep, slit-shaped; side of pronotum medially coarsely crenulate, posteriorly rugose-punctate and dorsally densely punctate; notauli wide and deep, crenulate, ending posteriorly in coarsely rugose-reticulate area; mesoscutum with oblique coarse rugae posteriorly; scutellum punctate; scutellar sulcus with one carina and several lateral crenulae; prepectal carina complete and distinct; precoxal sulcus wide, rugose-punctate; metanotum with a complete median carina; propodeum coarsely rugose-reticulate, with a short median longitudinal carina and a transverse carina anteriorly.

Wings. Fore wing: about 3 times as long as wide; 1-M curved; pterostigma 3 times as long as wide; r:3- SR:SR1 = 11:10:66; 2-SR:3-SR:r-m = 17:10:15; 1-M:m-cu = 25:11; SR1 straight; cu-a inclivous and just postfurcal; 1-CU1 very short; r-m inclivous. Hind wing: 1-M:1r-m = 9:23; cu-a inclivous.

Legs. Length of fore tarsus 1.1 times fore tibia; length of femur, tibia and basitarsus of hind leg 3.0 (excluding tooth), 9.0 and 5.0 times their width, respectively; length of outer and inner hind tibia spur 0.25 and 0.18 times basitarsus, respectively; hind femur robust, ventrally largely rugose and with a wide flange near its apical third ( Fig. 27 D); hind coxa finely punctate with interspaces larger than punctures.

Metasoma. First tergite widened posteriorly, its dorsal carinae distinct in basal two-thirds of tergite, rugosereticulate between dorsal carinae and laterally densely punctate; length of first tergite 1.1 times its apical width ( Fig. 27 C); second tergite coarsely punctate; ovipositor sheath 1.9 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 (but fore and middle tarsi whitish), hind coxa, trochanter, trochantelli (but darkened apically) and basal two-thirds of hind femur yellow; tegulum, pterostigma and most veins dark brown; antenna reddish-brown, 11th–19th antennal segments and about basal two-thirds of hind tibia whitish yellow; wing membrane slightly infuscate.

Variation. Body length 9.6–9.8 mm; fore wing length 7.3–7.5 mm; antenna with 37-38 segments, with 11th– 19th segments ivory or white, with 19th segment entirely or only partly ivory; length of eye 1.3–1.4 times temple in dorsal view; length of malar space 1.2–1.3 times basal width of mandible; length of first tergite 1.1 times its apical width; length of ovipositor sheath 1.9–2.2 times metasoma and 1.0–1.2 times fore wing; frontal protuberance subparallel-sided or nearly triangular; basal half of hind femur yellow or largely dark brown dorsally.

Male. Unknown.

Material examined. Holotype, ♀, China, Zhejiang prov., Western Tianmu Mt., Laodian, 9.VII.2009, Malaise trap, Rui Guo , No. 201106063 ( ZJUH) . Paratype, ♀, China, Shaanxi prov., Ankang, Hanbin-Shuanglong, N32°31’53” E108°52’50”, c 390 m, 11.V.2016, Qing-qing Tan ( NWUX) .

Comparative diagnosis. Similar to Wroughtonia breviantennata and W. yaanensis but the new species has the frontal protuberance smooth dorso-laterally, narrow subparallel-sided or nearly triangular and pointing posteriorly ( Fig. 27 H; wide triangular, carinate dorso-laterally and pointing dorsally in both other species), the palpi pale yellow basally (dark brown basally); second metasomal tergite extensively and coarsely punctate (smooth); antenna of female with about 9 white or ivory antennal segments (1–4 white or ivory segments) and the sublateral carina of frons irregular posteriorly (regular). It shares with W. alba the rather high number of white or ivory antennal segments of the ♀ and the coarsely punctate second tergite, but W. zhejiangensis has the hind coxa dorsally remotely punctate (punctate-reticulate in W. alba ), vein 1r-m of hind wing about 2.5 times as long as vein 1-M (1.1 times) and ovipositor sheath about as long as fore wing (1.2 times).

Host. Unknown.

Etymology. Named after the province where the holotype was collected.

Distribution. China (Zhejiang, Shaanxi).

Map from: https://en.wikipedia.org/wiki/File: China _edcp_relief_location_map.jpg Map from: https://en.wikipedia.org/wiki/File: China _edcp_relief_location_map.jpg Map from: https://en.wikipedia.org/wiki/File: China _edcp_relief_location_map.jpg

Figures

FIGURE 27. Wroughtonia zhejiangensis 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.