Notanisus gracilis (Yang)

Gibson, Gary A. P., 2015, The presence of Notanisus Walker (Hymenoptera: Pteromalidae) in North America and revision of the oulmesiensis species group, Zootaxa 3948 (3), pp. 422-450 : 432-433

Notanisus gracilis (Yang)

Figs 27 , 28

Anacallocleonymus gracilis Yang, 1996: 84 –86, 308–309. Holotype ♀ (NWCF, not examined). Type data: Xiangshan Mountain, Lueyang County, Shaanxi Province, 1986-VII-20, Yang Zhongqi leg. Notanisus gracilis ; Gibson, 2003: 93.

Diagnostic characters of Anacallocleonymus (English translation of Yang 1996: 85). Its characters are between Callocleonymus and Cleonymus . Body shape and most characters similar to Callocleonymus . Antennae 11- segmented; last claval segment with apex curved and cuspidal, without spicula; segment preceding clava having a tapering cuspis, which is similar to that of Cleonymus . Mid lobe of mesoscutum protruding forward to greater extent; pronotum considerably elongate, collar longer than wide and lateral panel angled downwards steeply similar to Heydenia . Head distinctly wider than mesosoma and metasoma. Fore wing elongate, with three brown spots (fig. 146); marginal vein more than 7× as long as stigmal vein. Petiole long, with length obviously greater than width. Other characters are similar to Callocleonymus .

Description of A. gracilis (English translation of Yang 1996: 85). FEMALE. Body length 3.3 mm. Body golden green with bronze metallic luster; vertex, and propodeum with “the mirror-like areas” (two regions on either side of median carina) purple; gaster purple to brown except second tergite and basal part of third tergite golden green; petiole yellow; antenna with scape to subapical flagellum segments yellow and apex dark brown [funicle apparently entirely yellow and clava dark except for extreme base (Fig. 28)]; mouth palps purple; all legs pale redbrown; wings hyaline, fore wing with three brown spots (fig. 146) [a distinct band behind parastigma extending width of wing and a larger infuscate region behind about apical half of marginal vein and stigmal and postmarginal veins subdivided longitudinally by hyaline cubital fold ( Fig. 27 )].

Head in dorsal view slightly and evenly curved anteriorly; occiput anteriorly slightly incised medially; temple 0.23× as long as eye; frontovertex dorsally and vertex smooth with superficial reticulation. In frontal view inner orbits divergent ventrally from about 1/2 height of eye; lower frons and face with raised, delicate reticulation; toruli situated beneath lower ocular line. For antenna see fig. 145.

In dorsal view, pronotum 1.2× as long as wide with dorsum gradually descending anteriorly to neck, the posterior margin slightly curved anteriorly and without a smooth and shining narrow band along posterior margin. In lateral view, pronotum with height about the same as its median length in dorsal view. Mesosoma with mesoscutum and scutellum considerably convex; mesoscutum 1.6× as wide as long with mid lobe curved forward anteriorly; notauli absent. Scutellum rounded and convex and 1.15× as long as wide; the dorsum with reticulation more delicate than on mesoscutum, arranged approximately as concentric circles. Axilla with only inner-anterior corner having reticulation, otherwise smooth and shining. Propodeum with obvious median carina and narrowly groove-like along and beside the median carina, with some short, transverse striation dispersed in the groove; concave to groove-like along anterior margin, with several longitudinal carinae in the transverse groove; spiracular sulcus conspicuous; “the mirror areas” large; posterior margin carinated with several short, longitudinal carinae extending anteriorly; nucha short but distinct. Fore wing (fig. 146) with marginal vein 7.6× as long as stigmal vein, 6.6× as long as postmarginal vein [costal cell extensively setose (about 17 setae) within basal half and with 2 setae apically anterior to base of parastigma; disc uniformly setose (including dorsally beyond stigmal vein and posterior of cubital fold) except for bare region over about anterior half of hyaline region behind basal half of marginal vein ( Fig. 27 )]. Legs stout with length of hind coxa 2.0× times that of fore coxa and 2.4× that of mid coxa, and width 1.3× that of both fore- and mid- coxa respectively; hind tibia 1.1× as long as femur with inner apical spur longer than outer apical spur.

Petiole long, length 1.2× width and saddle-shaped. Gaster with dorsum evenly convex, not collapsed, and with distinct engraved reticulation except tergites 1 and 2 smooth and shining; gaster 2.6× as long as wide (excluding petiole), and as long as head plus mesosoma, with tergite 2 the shortest and tergite 4 the longest. Ovipositor slightly protruded.

MALE. Unknown.

Host. Probably parasitoids of the larva of the bark beetle, Phloeosinus aubei Perris ( Coleoptera : Curculionidae : Scolytinae ) attacking Platycladus orientalis (L.) ( Cupressaceae ).

Remarks. As noted under Material and methods, the description of N. gracilis given above is a translation of the original diagnosis of Anacallocleonymus and description of N. gracilis by Yang (1996), supplemented by information (between square brackets) derived from images of the fore wing and antenna of the holotype.

Although some features are unknown for C. gracilis , females are distinguished from those of other recognized oulmesiensis -group species by at least the features given in couplets two and three of the key to species. Females differ from all other oulmesiensis -group females in at least three features as discussed under Remarks for the oulmesiensis species group.

Figures

FIGURES 27 and 28. Notanisus gracilis, ♀ holotype. 27, fore wing. 28, antenna.