Enicospilus pseudantennatus Gauld, 1977

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 pseudantennatus Gauld, 1977 Fig. 21

Enicospilus pseudantennatus Gauld 1977: 92; holotype ♀, Australia, ANIC.

Material examined.

6♀♀ 6♂♂: Australia (5♀♀ 6♂♂), Indonesia (1♀). No Nepalese specimens were examined .

Type series: paratypes of Enicospilus pseudantennatus Gauld, 1977, 1♀, Paramatta , NSW, Australia, 16.I.1921 ( EMUS) ; 5♂♂, Tambourine Mts , SE Queensland, Australia, 1-9.V.1935, R.E. Turner leg. ; 1♂, Cabramatta , NSW, Australia, 6.IV.1963, M. Nikitin leg. ; 1♀, Merrylands , NSW, Australia, 25.XI.1964, M. Nikitin leg. (all NHMUK).

Non-type series: 1♀, D.P.I Research Stn, Gatton, SE Queensland, Australia, 13-21.IV.1981 (MsT) (Fig. 21 ) ; 1♀, Mt Tanbourine , Queensland, Australia, 12-18.X.1978, I.D. Galloway leg. ; 1♀, Canberra , ACT, Australia, IX.1981, I.D. Gauld leg. (all NHMUK) ; 1♀, Ambon, Indonesia, 29.IX.1960, A.M.R. Wegner leg. ( EMUS).

Distribution.

Australasian, Oceanic and Oriental regions ( Yu et al. 2016). Gauld and Mitchell (1981) recorded this species from Nepal.

Diagnosis.

Head (Fig. 21B-D ): GOI = 2.2-2.8; lower face 0.7-0.8 × as wide as high; clypeus moderately convex in profile, its lower margin impressed; mandible rather weakly twisted by 10-20°, moderately long, evenly tapered, its outer surface without a diagonal structure; upper mandibular tooth 1.3-1.6 × as long as lower one; posterior ocellus close to eye; antenna with 56-63 flagellomeres and 20th flagellomere 2.2-2.4 × as long as wide.

Mesosoma (Fig. 21E ): mesopleuron entirely punctate; scutellum with lateral longitudinal carinae reaching posterior end and convergent posteriorly; metapleuron punctate; propodeum evenly weakly rounded, its posterior area moderately reticulate, outer margin of propodeal spiracle not joining pleural carina by a ridge.

Wings (Fig. 21F ): fore wing with AI = 0.3-0.6, CI = 0.3-0.4, ICI = 0.5-0.7, SDI = 1.2-1.4; fore wing vein 1m-cu&M moderately sinuous, 2r&RS almost straight; fenestra and sclerites of discosubmarginal cell of fore wing as in Figure 21F ; fenestra of fore wing not very long and its anterodistal corner distinctly separated from proximal end of vein RS; proximal sclerite triangular, separated from distal one, strongly pigmented; central sclerite partially strongly pigmented and sclerotised, ill-delineated oval, positioned in almost medio-distal part of fenestra; distal sclerite strong distally; proximal corner of marginal cell of fore wing uniformly setose; vein 1cu-a subinterstitial to antefurcal to M&RS by less than 0.2 1cu-a length.

Colour (Fig. 21 ): body including interocellar area entirely red-brown; wings hyaline.

Differential diagnosis.

As mentioned under E. laqueatus , four Oriental species of Enicospilus ( E. laqueatus , E. pseudantennatus , E. vestigator , and E. tripartitus ) have similar fenestra, sclerites, and fore wing veins (e.g. Figs 15F , 21F , 26F ). Among them, E. pseudantennatus is distinguished from E. laqueatus by the flat outer surface of the mandible (outer surface of mandible with a diagonal deep setose groove between dorsoproximal corner and base of mandibular apical teeth in E. laqueatus ), from E. tripartitus by the not densely setose and proximally more or less flat outer mandibular surface (outer surface of mandible with very dense setae and sharp and rather deep proximal concavity in E. tripartitus , as in Figure 2C ), and from E. vestigator by the weakly twisted mandible (10-20°) (mandible strongly twisted by 60-80° in E. vestigator ).

Figures

Figure 2. Diagnostic characters for some species of Nepalese Enicospilus. A-D. Outer surface of mandible: A. E. nepalensis Shimizu sp. nov., B. E. tangi Shimizu sp. nov., C. E. tripartitus, D. E. yonezawanus; E-H. Scutellum, in dorsal view: E. E. formosensis, F. E. kakanicus Shimizu sp. nov., G. E. phulchokiensis Shimizu sp. nov., H. E. tangi Shimizu sp. nov.; I, J. Hind tarsal claw: I. E. biharensis, J. E. nikami Shimizu sp. nov.

Figure 15. Enicospilus laqueatus (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.

Figure 21. Enicospilus pseudantennatus Gauld, 1977, ♀. A. Habitus; B. Head, frontal view; C. Head, lateral view; D. Head, dorsal view; E. Mesosoma, lateral view; F. Central part of fore wing.

Figure 26. Enicospilus tripartitus Chiu, 1954, ♀. A. Habitus; B. Head, frontal view; C. Head, lateral view; D. Head, dorsal view; E. Mesosoma, lateral view; F. Central part of fore wing.