New Triassic Beetles (Coleoptera) from Northern European Russia

A. G. Ponomarenko

Paleontological Institute, Russian Academy of Sciences, Profsoyuznaya ul. 123, Moscow, 117997 Russia

e-mail: aponom@paleo.ru

Received September 17, 2007

Abstract—Beetle remains from the Triassic Khey-Yaga locality, Nenets National District, Korotaikha Basin,
Nyadeita Formation, Olenekian–Anisian are described. Only isolated elytra have been found. Tetracoleus
tshalyshevi gen. et sp. nov. and T. minimus sp. nov. are described and assigned to Tricoleidae, and six new spe-
cies are described in formal taxa. Tetracoleus is close to Permian tricoleids just found in the Newcastle Group
of Australia and the Vyatkian Aristovo locality of northern European Russia. The composition of elytra in the
locality is closer to that of Lower Triassic localities than other Middle Triassic localities and characterizes the
beginning of a recovery after the Permian–Triassic ecological crisis. Longxianocupes Hong in Liu, Liu et Hong,
1985 is shown to be a junior synonym of Sogdelytron Ponomarenko, 1969. The species Palademosyne ovum
Ponomarenko, 2004, P.elongatum Ponomarenko, 2004, and P. latum Ponomarenko, 2004 are transferred to the
genus Pseudochrysomelites Handlirsch, 1906.

DOI: 10.1134/S0031030108060051

Key words: Coleoptera, Permian–Triassic ecological crisis, new taxa, European Russia.

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