Acantholycosa paraplumalis 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 northern Altai Mountains, 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...

.

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

Acantholycosa

Acantholycosa is a genus of wolf spiders. Members of this genus can be distinguished from closely related genera by the presence of more than three pairs of ventral tibial spines on each front leg....

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, A. plumalis

Acantholycosa plumalis

Acantholycosa plumalis is a species of wolf spider only known from the vicinity of Lake Teletskoye in the Russian part of the Altai Mountains....

, by details of the genitalia.