Homotropus venustus Dasch 1964a

Klopfstein, Seraina, 2014, Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae), Zootaxa 3801 (1), pp. 1-143 : 75

Homotropus venustus Dasch 1964a

Diagnosis. Fore wing length 3–4.4 mm. Antenna of both sexes with 17 to 19 flagellomeres; in females, apical flagellomeres with multiporous plate sensilla also present ventrally; in males with broadly oval, matt tyloids on flagellomeres 7 to 13/14. Face coriaceous and distinctly punctate, especially centrally. Clypeus strongly excised, with lobes rounded to somewhat angulate at outer corners. Mesopleuron smooth and shining, strongly punctate over more than half the surface, sometimes less so in males. Mesoscutum smooth and shining, strongly punctate. Hind coxa with hind surface smooth and shining between seta roots, coriaceous only basally. Fore wing areolet open or closed, in which case vein 3rs-m is unpigmented. Propodeum with only trace of pleural carina and most of lateral longitudinal carina present, evenly coriaceous, smoother on petiolar area. Female metasoma gradually tapered posterior to second segment. First tergite without median dorsal carinae, without longitudinal wrinkles, 1.0–1.2 times longer than wide; second tergite basally at most with few weak longitudinal wrinkles, 0.55–0.8 times as long as wide, second tergite 0.75–0.9 times length of first tergite; spiracle of third tergite on dorsal part, above lateral fold.

Colouration of females. Antenna black. Head and mesosoma black, with yellow often on central face patch which is separated from yellow on clypeus, yellow on mouthparts, hind corner of pronotum, tegula, sometimes subtegular ridge, large shoulder mark, sometimes upper mesepimeron, scutellum laterally. Legs orange, all coxae black, fore and mid coxae often with yellow apex, femora yellow or orange with a ventral black stripe, hind tibia white with a dark apex, hind tarsus dark. Metasoma black, tergites 2–3 or 4 all or mainly orange.

Colouration of males. As in females but additionally with yellow along inner orbits and with large central spot, sometimes entire face, scape and pedicel ventrally, sometimes spots on epicnemium, apex or most of fore and mid coxae. Metasoma often dark.

Material examined. Holotype of Homotropus venustus Dasch : USA, Idaho, Hollister , 23.X.1930. 1♀, at USNM. Paratype: USA, Utah, Strbry Daniel Pass, leg. H.M.G. & D. Townes, 19.VI.1948. 1♂, at AEI.

New for Turkey: Hakkari, 10 km NE Oramar, 1700m, leg. Max Schwarz, 29.VI.1985. 1♀, at ZSM.

Additional material. Mongolia: Central aimak; South East of Somon Bajanzogt; 1600 m, leg. Dr.Z.Kaszab, 11.VI.1966. 5♂, at TMA . Russia: East Siberia, 10 km East of Irukutsk, leg. Berlov, 26.VIII.2005. 1♂, at MR .

Distribution. Holarctic.

Figures. Antenna ♂ ( Fig. 20 I).

Figures

FIGURE 20. Homotropus characters mentioned in the species key. A. Homotropus melanogaster ♀, metasoma. B. Homotropus frontorius ♀, metasoma. C. Homotropus strigator ♀, propodeum. D. Homotropus pictus ♀, propodeum. E. Homotropus collinus ♀, clypeus. F. Homotropus elegans ♀, clypeus. G. Homotropus longiventris ♀, metasoma. H. Homotropus pictus ♀, metasoma. I. Homotropus venustus ♂, antenna showing tyloids. Scale bars represent 500 µm.