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 : 54

A key to Isomira known from Eocene amber

1(2). Antennomere 3 about twice as long as antennomere 2. Male and female with subequal eye sizes ....................... ...................................................................... I. hoffeinsorum

2(1). Antennomeres 2 and 3 short, subequal in length. Male with distinctly larger eyes than female.

3(4). Antennae very weakly serrate ( Figs 7, 8 ), antennomere 3 with straight anterior margin, ultimate and penultimate antennomeres subequal in length ...................... I. avula

4(3). Antennae distinctly serrate ( Fig. 9 ), antennomere 3 with oblique anterior margin, ultimate antennomere 1.4 times as long as penultimate one ............................. ................................................................... I. lobanovi sp. n.

Figures

Figs 1–9. Isomira (Mucheimira) spp. from Baltic amber, males, habitus and details of structure. 1–6, 9 – I. lobanovi sp. n.; 7, 8 – I. avula. 1 – habitus, dorsal view; 2 – habitus, lateral view (left side); 3 – habitus, lateral view (right side); 4 – head, prothorax and sclerites of pterothorax, latero-frontal view; 5 – abdomen, middle and hind tibiae; 6 –apical piece of the aedeagus, lateral view; 7 – right antenna, view from lateral side; 8 – left antenna, view from below; 9 – right antenna, view from above. Рис. 1–9. Isomira (Mucheimira) spp. из баΛтийского янтаря, самцы, общий виΑ и ΑетаΛи строения. 1–6, 9 – I. lobanovi sp. n.; 7, 8 – I. avula. 1 – габитус, виΑ сверху; 2 – габитус, виΑ сбоку (Λевая сторона); 3 – габитус, виΑ сбоку (правая сторона); 4 – гоΛова, проторакс и скΛериты птероторакса, виΑ сбоку и спереΑи; 5 – брюшко, среΑние и заΑние ноги; 6 – апикаΛьная ΑоΛя эΑеагуса, виΑ сбоку; 7 – правая антенна, виΑ с боковой стороны; 8 – Λевая антенна, виΑ снизу; 9 – правая антенна, виΑ сверху.