Homotropus nigrolineatus Strobl 1903

Klopfstein, Seraina, 2014, Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae), Zootaxa 3801 (1), pp. 1-143 : 70

Homotropus nigrolineatus Strobl 1903

Homocidus nigrilineatus Meyer 1936

Diagnosis. Fore wing length 3.9–5.1 mm. Antenna in females with 19 to 20 flagellomeres, apical flagellomeres with multiporous plate sensilla also present ventrally; in males with 20 to 21 flagellomeres and with narrow, long tyloids on flagellomeres 6/7 to 15/16. Face weakly coriaceous, partly shining, with punctures mainly centrally. Clypeus strongly excised, with lobes somewhat angulate at outer corners. Mesopleuron mainly smooth and shining, often with a small coriaceous patch below speculum, with some punctures on lower half and along anterior margin. Mesoscutum smooth and shining, rather strongly punctate. Hind coxa with hind surface smooth and shining. Fore wing areolet closed, vein 3rs-m usually unpigmented. Propodeum with only pleural carina and apical parts of longitudinal carinae present but sometimes with some rugae on petiolar area which partly indicate the location of the petiolar carinae; evenly coriaceous, rather smooth and rugose on petiolar area. Female metasoma tapered posterior to second or third segment. First tergite without median dorsal carinae, without longitudinal wrinkles but rugose on basal half, 1.2–1.3 times as long as wide in females, 1.4–1.6 in males; second tergite basally with few short longitudinal wrinkles, 0.7–0.9 times as long as wide, second tergite 0.8–0.95 times length of first tergite; spiracle of third tergite usually behind lateral fold.

Colouration of females. Antenna black. Head and mesosoma black, with yellow on central face patch which is separated from yellow on clypeus, mouthparts only partly yellow, palpi often black, yellow on hind corner of pronotum, tegula, small to large shoulder mark, upper part of mesepimeron; scutellum black. Legs yellow or orange, all coxae black, femora yellow or orange with a ventral black stripe, hind tibia yellow or orange with apex dark and with a subbasal dark spot, hind tarsus dark. Metasoma black.

Colouration of males. As in females but additionally with yellow over entire face, scape and pedicel ventrally, part of propleuron, subtegular ridge, often spots on epicnemium, femora except for black markings ventrally and sometimes dorsally, fore and mid coxae and hind coxa apically, and often basal spots on tergites 3 and sometimes 4.

Material examined. New for France: Col du Lautaret , N45.0225, E06.2142, 5.VIII.1982. 2♀, at ZSM . New for Sweden: Västerbotten, Sorsele kommun, Ammarnäs, Vindelfjällens naturreservat, Tjulträsklaspen, N65°58.007', E16°03.630', leg. SMTP, 26.VII.–15.VIII.2004. 1♂, at NRM .

Austria (1), France (3), Hungary (1), Sweden (1), Switzerland (12).

Distribution. Western Palaearctic.

Figures. Male terminal sclerites ( Fig. 37 I).

Figures

FIGURE 37. Ninth sternite and ninth and tenth tergites of male Diplazontinae species. A. Daschia brevitarsis. B. Diplazon angustus. C. Diplazon scutatorius. D. Diplazon zetteli. E. Enizemum ornatum. F. Homotropus dimidiatus. G. Homotropus longiventris. H. Homotropus melanogaster. I. Homotropus nigrolineatus. J. Phthorima xanthaspis.