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Type: Correspondence
Published: 2017-11-06
Page range: 181–188
Abstract views: 63
PDF downloaded: 1

Contributions to the palaeofauna of Ptinidae (Coleptera) known from Baltic amber

Institute of Life Sciences and Technologies, Daugavpils University, Vienības Str. 13, Daugavpils, LV-5401, Latvia.
MAUK “Zoopark”, Mira av. 26, 236028 Kaliningrad, Russia.
Department of Anatomy and Cell Biology, University of Saskatchewan, 107 Wiggins Rd., Saskatoon, SK, S7N 5E5, Canada.
Department of Anatomy and Cell Biology, University of Saskatchewan, 107 Wiggins Rd., Saskatoon, SK, S7N 5E5, Canada.
Biology Department, University of Regina, Regina, SK, S4S 0A2, Canada.
Coleptera

Abstract

Hemicoelus favonii sp. nov. is described and illustrated from Eocene Baltic amber. This new fossil species differs from extant congeners in having 11-segmented antennae; a metathoracic ventrite with large impression in its anterior portion; a pronotum distinctly narrower than the elytral base region; the posterior suture of abdominal ventrite 1 weakly arcuate medially; sharp lateral pronotal margins that are incomplete and distinct in their basal half only; elytral striae that are not grouped in pairs; posterior pronotal angles that are rounded; elytral intestriae 3, 5, 7 and 9 that are distinctly convex; and a comparatively small total body size. The presence of Hemicoelus in Baltic amber suggests that moist, rotting wood was available as a microhabitat in the ancient forest. Beyond the new species description, the systematic placement of Anobium jacquelinae Hawkeswood, Makhan & Turner is discussed. A new fossil record for Microbregma waldwico Bukejs & Alekseev, and the first report of the genus Trichodesma LeConte from Eocene Baltic amber are also presented.

 

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