Hackle-mesh Weavers (Amaurobiidae)

click for enlargement
Callobius sierra
2006 Stephen Lew

click for enlargement
Callobius sp.
2006 Stephen Lew

Hackle-mesh weavers are usually 10-20 mm in length, although species of the infrequently seen genus Zanomys and some very rare cave-dwelling species are barely longer than a single millimeter. They are dark black-brown or reddish-brown, and often have pale chevron markings on the abdomen. They build cottony silk nests under bark, stones, or in small crevasses. The largest and most frequently seen are the roughly 20 Californian species of the genus Callobius.


More information about Hackle-mesh Weavers

University of California, Berkeley    Berkeley Natural History Museums
Copyright © 1995-2010 UC Regents. All Rights Reserved.
Last updated: Mar 7, 2007