Callobius claustrarius

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Callobius claustrarius
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Class: Arachnida Order: Araneae Suborder: Araneomorphae Family: Amaurobiidae Genus: Callobius Species: C. claustrarius
Binomial name
Callobius claustrarius (Hahn, 1833)
Synonyms
Clubiona claustrarius Amaurobius claustrarius Cybaeus tetricus Ciniflo claustrarius

Males of the spider species Callobius claustrarius reach 8mm, females about 11mm. Head and legs are reddish brown, the abdomen is dark grey with an extended brown surface, dotted with lighter brown specks.

Adults can be found from autumn to spring.

This is a palearctic species. In Europe, it is found in mountaneous regions, especially in old, moist forests under rocks. C. claustrarius is a rather rare species.

The subspecies C. claustrarius balcanicus (Drensky, 1940) is only found in Bulgaria.