Acantholycosa plumalis is a species of wolf spider

Wolf spider

Wolf spiders are members of the family Lycosidae, from the Ancient Greek word "" meaning "wolf". They are robust and agile hunters with good eyesight. They live mostly solitary lives and hunt alone. Some are opportunistic hunters pouncing upon prey as they find it or even chasing it over short...

 only known from the vicinity of Lake Teletskoye

Lake Teletskoye

Lake Teletskoye is the largest lake in the Altay Mountains and the Altai Republic, Russia, and has a depth of up to 325 meters.Situated at a height of 434 m above sea level, the lake is long and wide and lies between the mountain ridges Korbu and Al-tyntu, on the junction of Sailughem Mountains...

 in the Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

n part of the Altai Mountains.

This is one of the largest spiders in the genus at up to 10.8 mm in length. It can be separated from most other Acantholycosa species by the long, dense hairs covering the abdomen

Abdomen

In vertebrates such as mammals the abdomen constitutes the part of the body between the thorax and pelvis. The region enclosed by the abdomen is termed the abdominal cavity...

 and legs. It can be separated from the only similarly hairy species, Acantholycosa paraplumalis

Acantholycosa paraplumalis

Acantholycosa paraplumalis is a species of wolf spider only known from the northern Altai Mountains, Russia.This is one of the largest spiders in the genus at up to 10.8 mm in length. It can be separated from most other Acantholycosa species by the long, dense hairs covering the abdomen and legs....

by details of the genitalia.