Wroughtonia areolata 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 : 421-423

Wroughtonia areolata Yan et van Achterberg , sp. nov.

( Fig. 9 )

Description. Female. Length of body (excluding ovipositor sheath) 11.0 mm, of setose part of ovipositor sheath 10.0 mm, of fore wing 9.0 mm.

Head. Antennal segments 19+, apical segments missing, length of third segment 1.3 times fourth segment; length of third and fourth antennal segments 3.2 and 2.5 times their width, respectively; length of maxillary palp 1.3 times height of head; head in anterior view 0.9 times as long as wide; length of eye in dorsal view 0.7 times length of temple; head slightly widened in dorsal view; POL:OD:OOL = 13:10:26; malar suture distinct, crenulate; length of malar space 1.1 times basal width of mandible, 0.6 times maximum width of eye; vertex finely and remotely punctate; temple finely punctate, costate near mandible; occipital carina complete and distinct; occipital carina meeting hypostomal carina near base of mandible and gradually merging; occipital flange wide and short; frontal depression deep anteriorly and largely smooth, posterior half of frontal depression shallow, laterally with weak crest and distinctly rugose laterally, frontal lamella strongly protruding and triangular, posteriorly narrow ( Fig. 9 I); face densely rugose; clypeus densely rugulose dorsally and micro-sculptured ventrally.

Mesosoma. Mesosoma 1.7 times as long as high; pronope absent; side of pronotum medially coarsely crenulate and dorsally punctulate; notauli medium-sized and deep, with some crenulae, posteriorly wide and with 3 longitudinal carinae; mesoscutum finely and remotely punctate; scutellar sulcus with one carina and 2 lateral crenulae; scutellum irregular, punctate, laterally rugose and posteriorly rugose and somewhat protruding; precoxal sulcus complete, deep and rugose-crenulate; propodeum with lamelliform elongate areola ( Fig. 9 E); coarsely reticulate and with a very short median carina anteriorly.

Wings. Fore wing: about 3 times as long as wide; 1-M curved; pterostigma 3.2 times as long as wide; r:3- SR:SR1 = 17:20:117; 2-SR:3-SR:r-m = 35:20:22; 1-M:m-cu = 18:10; SR1 straight; cu-a inclivous, slightly postfurcal; 1-CU1 very short; r-m inclivous. Hind wing: 1-M:1r-m = 10:15; cu-a slightly inclivous and posteriorly slightly curved towards wing base.

Legs. Length of fore tarsus 1.1 times fore tibia; length of femur, tibia and basitarsus of hind leg 3.2 (excluding tooth), 8.7 and 6.4 times their width, respectively; hind femur robust, ventrally rugose and with a robust and rugose triangular ventral tooth; length of outer and inner hind tibia spur both 0.2 times basitarsus.

Metasoma. First tergite widened posteriorly, first and second metasomal tergites largely smooth, but posteriorly between dorsal carinae punctate-rugose ( Fig. 6 E); its dorsal carinae distinct in basal 0.7 of tergite, length of first tergite 1.7 times its apical width; ovipositor sheath normally densely setose, twice as long as metasoma, 2.1 times as long as hind tibia, 1.1 times as long as fore wing and 0.9 times as long as body.

Colour. Black; palpi yellowish brown but maxillary palp dark brown basally; tegulum dark brown; coxae and hind femur black; hind tarsus pale yellowish; remainder of fore and middle legs and base of hind tibia yellowish brown; antenna (except black scapus) and pterostigma dark brown; most veins brown; wing membrane light yellowish brown.

Male. Unknown.

Material examined. Holotype, ♀, China, Shaanxi prov., Zhouzhi, Banfangzi, 2.VII.1998, No. 200011637, Lin Xue Yuan ( ZJUH).

Comparative diagnosis. The new species is similar to H. sibirica Tobias but differs by having a lamelliform elongate areola on the propodeum ( Fig. 4 F; without such areola in H. sibirica : Fig. 11 F) and the frontal depression, first and second metasomal tergites are largely smooth ( Fig. 4 C, I); at least partly sculptured in H. sibirica : Fig. 11 D, I).

Host. Unknown.

Etymology. Name derived from the large lamelliform areola on the propodeum.

Distribution. China (Shaanxi).

Figures

FIGURE 4. Helcon sulcatus sp. nov., ♀, holotype. A, fore wing; B, hind wing; C, mesosoma, lateral aspect; D, first and second metasomal tergites, dorsal aspect; E, hind femur and tibia, lateral aspect; F, habitus, lateral aspect; G, head, lateral aspect; H, head, dorsal aspect; I, propodeum, medio-dorsal aspect.

FIGURE 6. Helconidea dentipes Tobias A, fore wing; B, hind wing; C, mesosoma, lateral aspect; D, first and second metasomal tergites, dorsal aspect; E, hind femur and tibia, lateral aspect; F, propodeum, medio-dorsal aspect; G, habitus, lateral aspect; H, head, lateral aspect; I, head, dorsal aspect.

FIGURE 9. Wroughtonia areolata sp. nov. ♀, holotype. A, wings; B, mesosoma, lateral aspect; C, first-third metasomal tergites, dorsal aspect; D, hind femur and tibia, lateral aspect; E, propodeum, medio-dorsal aspect; F, habitus, lateral aspect; G, head, lateral aspect; H, head, dorsal aspect; I, apex of ovipositor sheath, lateral aspect. J, detail of frontal protuberance, laterodorsal aspect.

FIGURE 11. Wroughtonia brachygena sp. nov., ♀, holotype. A, wings; B, mesosoma, lateral aspect; C, propodeum, first and second metasomal tergites, dorsal aspect; D, hind femur and tibia, lateral aspect; E, propodeum, medio-dorsal aspect; F, habitus, lateral aspect; G, head, lateral aspect; H, head, dorsal aspect.