Palaeodytes baissiensis, Prokin, Alexander A., Petrov, Pyotr N., Wang, Bo & Ponomarenko, Alexander G., 2013

Prokin, Alexander A., Petrov, Pyotr N., Wang, Bo & Ponomarenko, Alexander G., 2013, New fossil taxa and notes on the Mesozoic evolution of Liadytidae and Dytiscidae (Coleoptera), Zootaxa 3666 (2), pp. 137-159 : 149

publication ID

https://doi.org/ 10.11646/zootaxa.3666.2.2

publication LSID

lsid:zoobank.org:pub:1F8D4E8A-2447-4556-9B98-D8229D858194

DOI

https://doi.org/10.5281/zenodo.5680621

persistent identifier

https://treatment.plazi.org/id/03AB6D60-FF93-D23A-FF44-0CF2B7B64D79

treatment provided by

Plazi

scientific name

Palaeodytes baissiensis
status

sp. nov.

Palaeodytes baissiensis sp. n.

Etymology: From Baisa (also known as Baissa, an alternative transliteration) fossil site; adjective in the nominative singular.

Material: Holotype PIN 4210/380 ±, beetle without head, prothorax and larger part of legs; Baisa, Buryat Republic, Russia (Early Cretaceous , approximately Hauterivian, ca. 135 mya; Zherikhin et al. 1999).

Description ( Figs 16–18 View FIGURES 16 – 18 ): Medium-sized beetle, with light underside and black elytron. Maximum body width situated at middle of metacoxae. Mesocoxae rounded, separated. Metacoxal plate 1.9 times as long as lateral lobe of metaventrite (LC/LV = 1.9). Metafemur dilated to 2/3 of its length, and then narrowed towards apex.

Measurements: Body length, probably around 10 mm; body width, 4.8 mm (5.6 mm with the displaced elytron); elytron length, 8.3 mm.

Comparison: The new species differs from P. gutta Ponomarenko, 1987 and P. sibiricus Ponomarenko, 1987 in its larger body size and black elytra; it also differs from P. sibiricus , described from the same locality, in the shape of the metafemur.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Dytiscidae

Genus

Palaeodytes

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