The bark anobiid, Ernobius mollis (L.), was collected in Oakland, Cali
fornia; thus providing the first unequivocal North American record of
this species west of Texas. Adult and larval E. mollis were collected
from a laboratory cage containing the originally infested branches ove
r a nineteen-month period, and adults were observed in copulo, suggest
ing re-infestation of the same bark-covered wood. Because E. mollis is
generally considered among pests of structures in Europe and the sout
hern hemisphere, the literature pertaining to E. mollis is reviewed he
re in the event that it may assume economic importance in California.