Exochus aenigmatosus Tolkanitz, 1999

(Fig. 1)

Material examined. Holotype: male, UKRAINE, Kherson Region: Black Sea Biosphere Reserve, Solenoozernyi area, on oak, 1.vi.1976, leg. V. Tolkanitz (deposited in: SIZK).

Diagnosis. Exochus aenigmatosus is characterized by the combination of the following characters: face not strongly swollen, black with apical triangular projection yellow; malar space partly and frons along eye orbits yellow (except interruption opposite to apical ocellus); clypeus with apical margin straight; occipital carina present dorsally; mesosoma black with scutellum and postscutellum yellow apically; propodeum with area superomedia narrower than area dentipara; fore wing with vein cu-a strongly distad of Rs&M by about 0.4 of own length; metasoma red except tergite 1 basally, 5 apically and 6–7 entirely black; third laterotergite more-or-less rounded from the proximal end; legs generally orange, except all trochanters entirely and coxae ventrally fuscous; hind tibia with a weakly defined subbasal ring.

Distribution. Currently known from Armenia, Azerbaijan, Kazakhstan, Moldova, and Ukraine (Tolkanitz 2007a).