Enicospilus purifenestratus (Enderlein, 1921)*

Shimizu, So, 2020, The Nepalese species of the genus Enicospilus Stephens, 1835 (Hymenoptera, Ichneumonidae, Ophioninae): a preliminary revision and identification key to species, Deutsche Entomologische Zeitschrift 67 (1), pp. 69-126 : 69

Enicospilus purifenestratus (Enderlein, 1921)* Fig. 24

Amesospilus purifenestratus Enderlein 1921: 17; holotype ♀, Sumatra, IZPAN.

Material examined.

4♀♀ 4♂♂: Nepal (1♀ 4♂♂), Brunei (2♀♀), Singapore (1♀) .

Non-type series: 1♀, Kathmandu (1,350 m), Nepal, VII.1983, M.G. Allen leg. (LT) ; 4♂♂, Phulchoki (2,000 m), Nepal, VIII.1982, M.G. Allen leg. (LT) (Fig. 24 ) ; 2♀♀, Seria , Brunei, XII.1979, Allen leg. ; 1♀, Singapore, 1905, H.N. Ridley leg. (all NHMUK).

Distribution.

Australasian, Eastern Palaearctic, and Oriental regions ( Yu et al. 2016). Newly recorded from Nepal and Brunei.

Diagnosis.

Head (Fig. 24B-D ): GOI = 2.7-3.0; lower face 0.6-0.7 × as wide as high; clypeus slightly convex in profile, its lower margin subacute to blunt; mandible weakly twisted by 10-20°, moderately long, proximally tapered and distally more or less parallel sided, its outer surface without a diagonal structure; upper mandibular tooth 1.3-1.5 × as long as lower one; posterior ocellus almost touching eye; antenna with 56-59 flagellomeres and 20th flagellomere 1.6-1.9 × as long as wide.

Mesosoma (Fig. 24E ): mesopleuron punctate to longitudinally punctostriate; scutellum with lateral longitudinal carinae reaching anterior 0.8 or more and convergent posteriorly; metapleuron punctostriate to striate; propodeum weakly declivous, its posterior area irregularly to subconcentrically wrinkled, outer margin of propodeal spiracle not joining pleural carina by a ridge.

Wings (Fig. 24F ): fore wing with AI = 0.5-0.6, CI = 0.2-0.4, ICI = 0.6-0.8, SDI = 1.3-1.4; fore wing vein 1m-cu&M moderately sinuous, 2r&RS almost straight; fenestra and sclerites of discosubmarginal cell of fore wing as in Figure 24F ; fenestra of fore wing not very long and its anterodistal corner distinctly separated from proximal end of vein RS; proximal sclerite triangular, confluent with distal one, strongly pigmented; central sclerite absent; distal sclerite more or less entirely pigmented; proximal corner of marginal cell of fore wing uniformly setose; vein 1cu-a antefurcal to M&RS by 0.1-0.3 × 1cu-a length.

Colour (Fig. 24F ): body including interocellar area entirely testaceous; wings hyaline.

Differential diagnosis.

Enicospilus purifenestratus is very similar to E. urocerus Gauld & Mitchell, 1981, but distinguished from it by the unswollen segments 3 and 4 of the maxillary palp (segments 3 and 4 of the maxillary palp swollen in E. urocerus ) and thinner distal sclerite (Fig. 24F ) (distal sclerite thicker in E. urocerus ).

Figures

Figure 24. Enicospilus purifenestratus (Enderlein, 1921), ♂. A. Habitus; B. Head, frontal view; C. Head, lateral view; D. Head, dorsal view; E. Mesosoma, lateral view; F. Central part of fore wing.