Episemura ensata ( Bauer 1981, Sussaba

Klopfstein, Seraina, 2014, Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae), Zootaxa 3801 (1), pp. 1-143 : 55

Episemura ensata ( Bauer 1981, Sussaba ) (stat. rev.)

Diagnosis. (Male unknown). Fore wing length 4.4–5.1 mm. Antenna of female with 16 flagellomeres. Mandible with upper tooth subdivided, thus appearing tridentate. Propodeum with a full set of carinae enclosing basal, lateral and petiolar areas. Hind margins of tergites 4 to 6 only weakly concave to almost straight, metasoma weakly laterally compressed from apex of third tergite. Hind tibia orange, same colour as hind femur.

Colouration of females. Antenna black. Head and mesosoma black, face with a small yellow central face patch, yellow on clypeus and mouthparts, hind corner of pronotum, tegula, subtegular ridge, and upper mesepimeron; scutellum black. Legs orange, coxae black, fore coxa with a yellow apex; femora orange; hind tibia brown, hind tarsus dark. Metasoma black.

Material examined. Holotype of Sussaba ensata Bauer : Germany, Leuzenberg, 2.VII.1952. 1♀, at ZSM. Paratype: Germany, Nürnberg, 29.VI.1976. 1♀, at ZSM.

New for Switzerland: Valais, Les Agettes , Les Mayens-de-Sion , VIII.1961. 1♀, at MZL . Additonal material. Germany, Bayern, Kelheim, Hienheimerforst, Buchberg, trap on larch tree, 25.VII.1996. 1♀, at ZSM.

Distribution. Western Palaearctic.

Figures. Metasoma ( Fig. 11 F), ovipositor sheaths ( Fig. 11 I), face ( Fig. 19 B), habitus ( Fig. 30 C).

Notes. This species has been synonymized with E. diodon ( Sebald et al. 1988) but represents a distinct species, recognizable by the tridentate instead of bidentate mandible, the less strongly compressed metasoma, and the colouration of the hind tibia. One of the specimens identified as E. ensata by Bauer is actually an E. diodon , and both species thus occur in central Europe.

Figures

FIGURE 19. Mandibles and faces in Episemura. A. Episemura diodon ♀, with a relatively high face and bidentate mandibles. B. Episemura ensata ♀, with a relatively low face and the tridentate mandibles that are usual in the subfamily. Scale bars represent 500 µm.

FIGURE 30. Habitus of Diplazontinae species. A. Diplazon zetteli sp. nov. B. Enizemum ornatum. C. Episemura ensata. D. Eurytyloides umbrinus sp. nov. E. Fossatyloides gracilentus. F. Homotropus crassicornis.

FIGURE 11. A. Sussaba cognata ♀, first to third segments of metasoma with laterotergites outflexed. B. Promethes sulcator ♀, first to third segments of metasoma with laterotergites outflexed. C. Sussaba erigator ♀, hind wing. D. Diplazon tetragonus ♀, hind wing. E. Sussaba cognata ♀, metasoma. F. Episemura ensata ♀, metasoma. G. Sussaba punctiventris ♀, scutellum. H. Episemura diodon ♀, scutellum. I. Episemura ensata ♀, ovipositor sheath. J. Eurytyloides umbrinus ♀, ovipositor sheath.