Casinaria dubia TSCHEK , 1871

Riedel, Olmgren Matthias, 2018, Revision of the Western Palae arctic species of the genus Casinaria H (Hymenoptera, Ichneumonidae, Campopleginae), Linzer biologische Beiträge 50 (1), pp. 723-763 : 731-732

Casinaria dubia TSCHEK, 1871 ( fig. 12 , 45, 47)

Casinaria dubia TSCHEK, 1871: 57 ♀

Lectotypus: (♀) Piesting Tschek, 1/10 866, Lectotype, Casinaria dubia Tschek ♀ det. J.F. AUBERT (Wien), studied by HORSTMANN.

D e s c r i p t i o n: ♀: Body length 7.5-8.5 mm. Flagella with 31-32 segments; 1 st flagellomeres length 3.2x width; preapical flagellomeres about square. Temples narrow, strongly and almost linearly narrowed behind eyes. Ocelli very large, distance of lateral ocelli to eyes 0.5-0.6x and between them 1.3x their diameter. Face strongly narrowed ventrally, rugose-punctate, minimal width 0.53x eye length and 0.85x width of frons. Malar space length 0.3x width of mandibular bases. Genal carinae strongly bent outwards ventrally, reaching mandibular bases in an angle of almost 90°. Hypostomal carinae not or slightly elevated.

Mesopleural discs finely rugose-punctate; specula partly almost smooth, shining; dorsal impressions strongly striate, the striae reaching the frontal parts of mesopleura. Prepectal carina narrow, absent on the transversal parts. Metapleura finely rugose; coxal carinae absent. Propodeum without carinae, finely rugose; area petiolaris with slight medial impression, without distinct transverse ridges. Hind femora length 4.6-5.0x width, length of inner spurs of hind tibiae 0.65x hind metatarsi length. Areolets stalked, 2 nd recurrent veins lateral of their middle; nervuli interstitial or slightly postfurcal; postnervuli intercepted in their middle; external angles of discoidal cell acute (75-80°); nervelli of hind wings slightly reclivous, not distintcly intercepted. 2 nd tergite length 1.8-1.9x width; distance of thyridia from basal margins 1-1.5x their length; 3 rd tergite length 1.1x width.

Colour: Black. Palps yellow; mandibles and tegulae yellowish-red to reddish-brown. Metasoma black, usually 2 nd tergite subapically, 3 rd tergite partly and following tergites laterally reddish. Coxae and trochanters black; fore and middle trochanters yellow apically; all trochantelli yellow (rarely ± blackish); legs otherwise red; middle and hind femora reddish-brown to blackish; hind tibia reddish to brown, cream-yellow basally, yellow to reddish-brown externo-medially, brown subbasally and in apical third, sometimes hind tibiae except basal yellow spot completely blackish; hind tarsi except yellow bases of metatarsi brown. Pterostigmas brown.

♂: Flagella with 31-33 segments. Hind femora length 4.9x width. Area petiolaris sometimes strongly impressed centrally and with coarse transversal rugae.

H o s t s: Apatura metis substituta BUTLER, 1873 (Lep. Nymphalidae ) (EDI),? Eilema depressa (ESPER, 1787) (Lep. Arctiidae ) (EDI); Lithosia quadra (LINNAEUS, 1758) (Lep. Noctuidae ) (EDI).

D i s t r i b u t i o n: Austria, Germany, France, Hungary*, Japan*, United Kingdom*.

Figures

Figs 9-12: Propodea of ♀♀ of: (9) Casinaria affinis TSCHEK; (10) C. albipalpis (GRAVENHORST); (11) C. cultellator AUBERT; (12) C. dubia TSCHEK.