Isomira Mulsant, 1856

Nabozhenko, M. V. & Bukejs, A., 2021, A new species and a key to Isomira Mulsant, 1856 (Coleoptera: Tenebrionidae: Alleculinae) from Eocene Baltic amber, Caucasian Entomological Bulletin (Caucas. entomol. bull.) 17 (1), pp. 51-56 : 52

Genus Isomira Mulsant, 1856

The studied specimen under consideration belongs to the genus Isomira of the tribe Alleculini and the subtribe Gonoderina based on the combination of the following characters: five abdominal ventrites (inner sternite and ventrite VIII are hidden, unlike Cteniopodini with externally visible sclerites in male and female), weakly serrate antennae (species of Cteniopodini are with filiform or moniliform antennae, while the majority of Alleculini have serrate antennae), simple penultimate tarsomere (the majority of Alleculina have lobed or bilobed penultimate tarsomere, but species of Gonoderina are with simple one). The specimen has not distinct rows of deep strial punctures or clear impressed striae unlike the majority of gonoderine genera. Only two genera have the mentioned above complex of characters: Isomira and Asiomira . The fossil specimen examined distinctly differs from Middle East species of the genus Asiomira by the subequal length of antennomeres 2 and 3.