Casinaria georgiana RIEDEL, 2023

Riedel, Pénigot, Schwarz, Diller, Johansson & Japoshvili, G., 2023, Darwin wasps (Hymenoptera, Ichneumonidae) of the Kintrishi National Park, Sakartvelo (Georgia), with descriptions of six new species, Linzer biologische Beiträge 55 (1), pp. 61-153 : 138-140

Casinaria georgiana RIEDEL nov.sp. ( Figs 3-7 )

H o l o t y p e: (♀) SW Georgia, Kintrishi NP, 1634m asl., 41.44535308°N 41.05384144°E, MT 12, 24.viii.-7.ix.2018, leg. G. Japoshvili (Tbilisi).

D e s c r i p t i o n: ♀: Body length 9.2 mm. Flagellum with 33 flagellomeres, filiform; 1 st flagellomere 3.1× longer than wide; preapical flagellomere about square. Head dorsally 2.4× wider than long. Temple strongly and almost linearly narrowed behind eye. Distance between lateral ocellus and eye 0.55× and between lateral ocelli 1.1× their diameter. Face with convergent sides ventrally, finely rugose-punctate, minimal width 0.85× frontal width and 0.55× eye length. Malar space 0.4× as long as width of mandibular base. Genal carina straight, not bent outwards ventrally, reaching hypostomal carina; both carinae low.

Side of pronotum with longitudinal striation ventrally. Mesopleural disc granulate and partly with fine rugose punctation; speculum with microsculpture, but shining; dorsal impression with strong longitudinal striae. Epicnemial carina low ventrally. Propodeum coarsely rugose, without distinct carinae, with moderately strong central longitudinal impression covered with transversal striae. Hind femur 4.8× as long as wide; posterior spur of hind tibia 0.75×as long as hind metatarsus. Hind claw with two or three strong teeth. Areolet pointed, vein 2m-cu strongly distad its middle; vein 1cu-a postfurcal by 2× its width; postnervulus intercepted in the middle.

Metasoma slender, but apical tergites not distinctly compressed. 2 nd tergite 2.0× longer than wide; 3 rd tergite about as long as wide. Thyridium roundish, its distance to basal margin of 2 nd tergite 2.0× its length. Apical margin of 7 th tergite straight, not excised medially. Ovipositor unmodified. Color: black. Palps ivory. Mandible except teeth yellowish. Tegula black. 1st and 2nd

tergites entirely and 3 rd tergite medially black; 3 rd tergite laterally and following tergites entirely reddish-brown. Coxae black; trochanters and trochantelli black, ± yellowish apically. Fore femur red, blackish ventrally; fore tibia and tarsus red. Mid femur black, narrowly yellow apically; mid tibia yellowish, sub-basally and apically black; mid tarsus cream-yellow. Hind femur black; hind tibia black, with ivory spot basally; hind tarsus black, metatarsus with narrow ivory ring basally. Wings hyaline, pterostigma dark brown.

♁ unknown.

Taxonomical remark: This new species runs to Casinaria nigrotrochanterata RIEDEL in the key of Western Palaearctic Casinaria species (RIEDEL 2018), but differs by larger ocelli, reduced carination of propodeum, black tegula, reddish-brown apical tergites and mainly blackish hind tibia.

Figures

Figs 3-7: Casinaria georgiana RIEDEL nov.sp. HT: (3) face, (4) head from dorsal, (5) mesosoma from lateral, (6) propodeum from dorsal, (7) metasoma from dorsal.