Electotreta rasnitsyni, Kazantsev, Sergey V., 2012

Kazantsev, Sergey V., 2012, New omethid and lampyrid taxa from the Baltic Amber (Insecta: Coleoptera), Zootaxa 3186, pp. 59-63 : 62-63

Electotreta rasnitsyni sp. n.

( Figs 4–5 )

Description. Male. Testaceous; elytra dark brown.

Eyes bulging, interocular dorsal distance ca. 3 times greater than eye radius. Maxillary and labial palps slender; ultimate maxillary palpomere elongate, ultimate labial palpomere roundish. Antennae filiform, attaining to elytral two fifths, with antennomere 3 subequal in length to pedicel (antennomere 2) and only slightly shorter than scape ( Fig. 4 ).

Pronotum strongly transverse, ca. 2.4 times as wide as long, strongly narrowed anteriorly, margined throughout, with prominent acute posterior angles; disk sparsely punctate. Scutellum transverse, triangular, slightly emarginate at apex ( Fig. 4 ).

Elytra elongate, 2.6 times as long as wide at humeri ( Fig. 1 ); with ten rows of round impressions in the middle transforming into six rows at apices.

Terminal abdominal ventrite elongate, almost parallel-sided, with rounded apex, ca. 2 times longer than wide and longer than two preceding ventrites together ( Fig. 5 ).

Length (from anterior head margin to end of elytra): 2.3 mm. Width (humerally): 0.8 mm.

Female. Unknown.

Type material: Holotype, 3, specimen No. L- 042011, Palanga, Lithuania, Baltic amber, Upper Eocene (Insect Centre collection, Moscow).

Diagnosis. Electotreta rasnitsyni sp. n., the only known representative of the genus, is easily distinguishable from other ototretines by the generic characters.

Etymology. The new species is named after a prominent palaeоentomologist Dr. A.P. Rasnitsyn (Moscow).

Figures

FIGURES 4 – 5. General view of Electotreta rasnitsyni gen. n., sp. n., holotype male. 4 — dorsally; 5 — same, ventrally.

FIGURES 1 – 3. General view of Electromethes alleni gen. n., sp. n., holotype male. 1 — dorsally; 2 — same, latero-dorsally; 3 — same, ventrally.