A new species of the enchytraeid genus Mesenchytraeus Eisen, 1878 (Clitellata, Enchytraeidae) from the eastern Chukot Peninsula, Russian Far East, as further evidence of former trans-Beringian faunal connections

被引：0

作者：

Dozsa-farkas, Klara ^{[1
]}

Makarova, Olga ^{[2
]}

机构：

[1] Eotvos Lorand Univ, Dept Systemat Zool & Ecol, H-1117 Budapest, Hungary

[2] Severtsov Inst Ecol & Evolut, Moscow 119071, Russia

来源：

ZOOTAXA | 2025年 / 5589卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

Clitellata; potworm; gopher; Urocitellus parryii; permafrost; tundra; patchy distribution; hibernation; thermogeny; OLIGOCHAETA; TOLERANCE; GREENLAND; CANADA; TUNDRA; COLD;

D O I：

10.11646/zootaxa.5589.1.8

中图分类号：

Q95 [动物学];

学科分类号：

071002 ;

摘要：

A new potworm species, Mesenchytraeus tschukotensis D & oacute;zsa-Farkas sp. nov., is described from the Lavretiya Bay coast, eastern Chukot Peninsula, Russian Far East, based on morphological details. Its numerous records appear to be confined to a single Arctic ground squirrel (Urocitellus parryii (Richardson, 1825)) colony with dense grassy vegetation. Such an association is suggested to be caused by the specific winter microclimatic conditions in gopher burrows due to the rodent's thermogeny. The new enchytraeid species, together with M. harrimani Eisen, 1904; M. maculatus Eisen, 1904; and M. melanocephalus Christensen & D & oacute;zsa-Farkas, 1999, form an amphi-Beringian group of closely related species, similar in the structure of the spermathecal ampullae, that seems to be confined to the Pacific coast of North America and the Arctic coast of Siberia.

引用

页码：80 / 90

页数：11