Wroughtonia albobasalis van Achterberg 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 : 419-421

Wroughtonia albobasalis van Achterberg et Chen , sp. nov.

( Fig. 8 )

Description. Female. Length of body (excluding ovipositor sheath) 7.9 mm, of setose part of ovipositor sheath 5.1 mm, of fore wing 6.1 mm.

Head. Antennal segments 33, length of third segment 1.1 times fourth segment; length of third, fourth and penultimate segments 3.0, 2.7 and 1.4 times their width, respectively; length of maxillary palp 1.4 times height of head; head 0.7 times as long as wide in anterior view; length of eye 2.1 times temple in dorsal view; length of malar space 1.1 times basal width of mandible and 0.5 times maximum width of eye; malar suture moderately impressed; POL:OD:OOL = 8:5:13; vertex sparsely punctate and shiny, but with larger punctures near eye ( Fig. 8 I); temple coarsely punctate-rugose; occipital carina complete, straight ventrally and meeting hypostomal carina near base of mandible, occipital flange small ( Figs 8 B, H); frontal protuberance wide triangular, largely smooth laterally and pointing dorsally, in posterior view triangular and depressed basally ( Fig. 8 F), frontal depression deep anteriorly, rather shallow posteriorly, with distinct sublateral carina and with some rugae, medially smooth except V-shaped ridge near protuberance; face coarsely rugose; clypeus moderately convex, dorsally densely rugose and ventrally depressed and mainly smooth; epistomal suture deep.

Mesosoma. Length 1.7 times its height; pronope small, triangular and deep ( Fig. 8 C); side of pronotum coarsely crenulate-rugose, but finely punctate dorsally; mesoscutal lobes rather densely punctate but coarsely rugose posteriorly and near notauli; notauli wide and deep, crenulate, posteriorly reticulate and without a median carina ( Fig. 8 C); scutellar sulcus with four carinae; scutellum sparsely punctate, nearly flat and without lateral carinae; precoxal sulcus wide, coarsely rugose-punctate and anteriorly mainly punctate; metanotum with a complete median carina; propodeum narrowly smooth basally, behind distinct transverse and curved carina mainly coarsely foveolate-punctate and with short median carina ( Fig. 8 C).

Wings ( Fig. 8 A). Fore wing: 3.3 times as long as wide. 1-M slightly curved; pterostigma 2.6 times as long as wide; r:3-SR:SR1 = 11:10:59; 2-SR:3-SR:r-m = 14:10:12; 1-M:m-cu = 2:1; SR1 straight; cu-a inclivous and subinterstitial; r-m slightly inclivous. Hind wing: 1-M:1r-m = 10:23; cu-a curved; marginal cell distinctly widened.

Legs. Length of fore tarsus 1.3 times fore tibia; length of femur, tibia and basitarsus of hind leg 2.8 (including protuberance), 9.0 and 5.2 times their width, respectively; length of outer and inner hind tibia spur both 0.3 times basitarsus; hind femur robust, ventrally rugose and with a rather wide obtuse protuberance ( Fig. 8 E); hind coxa stout, dorsally largely smooth, except for some fine punctation.

Metasoma. First tergite gradually widened posteriorly, apically 2.6 times wider than basally, coarsely foveolate-punctate and its dorsal carinae nearly complete; length of first tergite 1.2 times its apical width; second tergite smooth medially and remainder largely coarsely rugose-punctate ( Fig. 8 D), except posteriorly; ovipositor sheath 1.3 times as long as metasoma, 1.7 times as long as hind tibia and 0.8 times as long as fore wing; ovipositor sheath with fine and rather erect brownish setae, becoming paler at apex of sheath ( Fig. 8 K).

Colour. Black; palpi (including basal segments) pale yellow; antenna dark brown, but scapus ventrally and pedicellus brown, and 3rd–11th segments ivory (but 11th segment darkened apically); apical 0.3 of hind femur laterally and largely dorsally, apical 0.6 of hind tibia and tegulum dark brown; hind tarsus ivory; remainder of legs and humeral plate brownish yellow; metasoma dark brown or brown ventrally and blackish brown dorsally; ovipositor sheath dark brown but paler apically; pterostigma and most veins dark brown; wing membrane faintly fumose.

Variation. Body length 7.0– 7.9 mm; fore wing length 5.7–6.1 mm; antennal segments 33–34; length of setose part of ovipositor 5.1–5.2 mm and 0.8–0.9 times fore wing; 12th antennal segment ivory (except apically) or dark brown.

Male. Unknown.

Material examined. Holotype, ♀, China, Hubei prov., Yiling, Yichang , Chentangping , Malaise trap, 17.VI- 10.VIII.2014, 30.94°N 111.32°E, c. 465 m, Haoliang Ni ( NWUX) . Paratype: 1♀, same data as holotype, ( RMNH) .

Comparative diagnosis. This new species shares with W. anastasiae ( Belokobylskij, 1998) , comb. nov. the very coarsely punctate-reticulate temples, but differs in having the vertex moderately punctate (posteriorly coarsely reticulate-punctate in W. anastasiae ); basal half of antenna of female ivory (dark brown or blackish brown), hind coxa brownish yellow (dark brown); hind coxa punctulate dorsally and largely smooth (densely finely transversely rugose or rugulose) and third tergite smooth (finely densely punctate-rugose).

Host. Unknown.

Etymology. It is named “ albobasalis ” because of its white (“ albus ” is Latin for “white”) or ivory basal half of the antenna.

Distribution. China (Hubei).

Figures

FIGURE 8. Wroughtonia albobasalis sp. nov., ♀, holotype. A, wings; B, mesosoma, lateral aspect; C, mesosoma, dorsal aspect; D, first-fourth metasomal tergites, dorsal aspect; E, hind leg, lateral aspect; F, frontal protuberance, dorso-lateral aspect; G, habitus, lateral aspect; H, head, lateral aspect; I, head, dorsal aspect; J, head, anterior aspect; K, apex of ovipositor sheath, lateral aspect.