(Fig. 10)
Material examined. Holotype: male, UKRAINE, Donetsk Region: Shyroke, upper reaches of the river Kalmius, 6.viii.1997, leg. Perepechaenko (deposited in: SIZK).
Diagnosis. Exochus latiareolus is characterized by the combination of the following characters: face not strongly swollen, black; frons black; yellow marks opposite to lateral ocelli not elongated; clypeus with apical margin straight; occipital carina absent dorsally; meso- and metasoma black; propodeum with area superomedia closed apically, wider than area dentipara, costulae distinct; fore wing with vein cu-a strongly distad of Rs&M by about 0.4 of own length; third laterotergite more-or-less rounded from the proximal end; legs generally orange except coxae, trochanters and trochantelli black, hind coxa with orange marks, hind tibia more-or-less uniformly orange, weakly lighter basally.
Distribution. Currently known from Ukraine (Donetsk and Zaporyshshya Regions) and Russia (Irkutsk Region and Russian Far East) (Tolkanitz 2007a).