Homotropus haemorrhoidalis Szépligeti 1898

Klopfstein, Seraina, 2014, Revision of the Western Palaearctic Diplazontinae (Hymenoptera, Ichneumonidae), Zootaxa 3801 (1), pp. 1-143 : 67

Homotropus haemorrhoidalis Szépligeti 1898

Homocidus rhenanus Habermehl 1930

Homocidus struvei Hedwig 1936

Homocidus tricolor Stelfox 1941

Homotropus lipothrix Momoi 1973

Diagnosis. Fore wing length 4–5.3 mm. Antenna of both sexes with 19 to 20 flagellomeres, in females apical flagellomeres with ventral surface covered by short, thick bristles and devoid of multiporous plate sensilla, in males with long tyloids on flagellomeres 6 to 9. Face strongly coriaceous but distinctly punctate over most of its surface. Clypeus strongly excised, with lobes rounded. Mesopleuron partly coriaceous, very strongly and densely punctate over most of its surface. Mesoscutum smooth and shining, strongly and densely punctate. Hind coxa with hind surface mainly smooth and shining between seta roots, coriaceous only basally. Fore wing areolet closed, vein 3rs-m usually unpigmented. Propodeum with only pleural carina and lateral longitudinal carinae present, strongly coriaceous, more rugose on petiolar area. Female metasoma dorsoventrally depressed. First tergite with median dorsal carinae present only basally, never surpassing middle of tergite, with few longitudinal wrinkles, 0.8–0.95 times as long as wide in females, 0.95–1.2 in males; second tergite basally with numerous longitudinal wrinkles, 0.5–0.7 times as long as wide in females, 0.7–0.8 in males, second tergite 0.85–1.1 times as long as first tergite; spiracle of third tergite on dorsal part, above lateral fold.

Colouration of females. Antenna black. Head and mesosoma black, most of mesopleuron, metapleuron and often also pronotum and first tergite dark orange, with ivory on central face patch separated from ivory on clypeus, ivory on mouthparts, hind corner of pronotum, tegula, subtegular ridge, large shoulder mark, mesepimeron, scutellum ivory laterally and apically, usually dark orange centrally. Legs orange, all coxae orange, fore coxa dark basally, trochanters and tips of femora often marked with ivory; hind tibia white with base, subbasal spot and apex dark, outer side sometimes dark, hind tarsus dark. Metasoma black, sometimes with some orange markings.

Colouration of males. As in females but additionally with ivory or yellow over entire face, scape and pedicel ventrally, propleuron, mesosternum and a stripe on lower mesopleuron, fore and mid coxae, and often basal spots on tergites 3 and 4.

Material examined. Holotype ♀ of Homotropus haemorrhoidalis Szépligeti : Hungary, Budapest. 1♀, at TMA. Holotype ♀ of Homocidus tricolor Stelfox : Ireland, Dublin, Harold's Cross, 14.VI.1937, 1♀, at USNM . Lectotype (1♂) and two paralectotypes of Homotropus lipothrix Momoi : Mongolia, Bajan-Ölgij aimak, in the valley of the Chavealyn gol river, 25 km East of Somon Cagannuur, 1850 m, leg. Dr.Z.Kaszab, 3.VII.1968. 2♂, 1♀, at TMA .

New for Switzerland: Zürich, Wädenswil environments, leg. K.Schneider. 5♂, 6♀, at NMBA.

Germany (3), Hungary (1), Mongolia (3), Switzerland (11), United Kingdom (2).

Distribution. Palaearctic.