Rovenosa rasnitsyni Khalaim, 2011

Manukyan, Andranik R. & Zhindarev, Leonid A., 2021, Fossil Darwin wasps (Hymenoptera: Ichneumonidae) from Baltic amber, Palaeoentomology 4 (6), pp. 637-647 : 644-645

Rovenosa rasnitsyni Khalaim, 2011

Material. The species was described from a single female from Rovno amber from the collection of the Zoological Institute of the National Academy of Sciences Ukraine, (Kiev). We provide a description of the male that we found in the CCHH collection. Only differences from the female are given .

Type locality and horizon. Baltic amber. Upper Eocene , Prussian Formation. Baltic Sea coast and Amber quarry Yantarny near Kaliningrad, Kaliningrad Province, Russia .

Description. No. 1726-4, ♂, Amber piece 14 × 8 × 3 mm, placed by the owner in a protective polyester-resin cube 16 × 13 × 8 mm (method by Hoffeins, 2001). Well preserved ichneumonid wasp. Tarsus of the hind left leg behind the 2nd segment ground off; right hind leg behind trochanters and claws of right middle leg damaged. Syninclusion: Diptera , Ceratopogonidae ; trichomes of oak flower ( Quercus spp. ).

Body length about 4.7 mm, fore wing length about 3.6 mm. Temple short, strongly narrowed behind eyes in dorsal view. Frons with weak but distinct longitudinal keel between antennal sockets. Mandible narrow and slender, the lower tooth is sharp and longer than the upper one. Face with vertical bulge along median line. Occipital carina invisible. Basal flagellomeres 1–4 long about 5 times as long as wide; middle flagellomeres 5–17 slightly elongated, about 2.5 times as long as wide; subapical flagellomeres transversе; multiparous plate sensillae on apical segments thin and sparse. Notaulus in 0.3 of the mesoscutum sharp. Vein 2m-cu postfurcal; bulla in the half of 2m-cu directly below areolet. Length of hind femur 1.1 mm, 6.5 times as long as wide. Length of hind tibia 1.2 mm, 9.5 times as long as wide.

The body is uniformly dark brown or black, without discernible pubescent.

Remarks. We assigned the specimen to the species R. rasnitsyni on the basis of the following features: 1) the presence of a carina between the antennal fossa, 2) the presence of a notaulus on the mesonotum, 3) the propodeum with sharp ridges raised above the surface of the propodeum.