Trachelas pacificus

Chamberlin & Ivie, 1935

Bull-headed sac spider

Trachelas pacificus is a of true spider in the Trachelidae, distributed across the southwestern United States and northwestern Mexico. It is commonly found in houses and are present year-round. The species is part of a known for sac-like retreats and active hunting rather than web-building.

Trachelas pacificus by (c) Marshal Hedin, some rights reserved (CC BY). Used under a CC-BY license.

Trachelas pacificus by no rights reserved, uploaded by Jesse Rorabaugh. Used under a CC0 license.

Trachelas pacificus, male (F Corinnidae) by Marshal Hedin. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Trachelas pacificus: /ˈtræ.kəˌlæs pəˈsɪ.fɪ.kəs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Images

Habitat

Commonly found in houses; natural details are not well documented in available sources.

Distribution

United States (Arizona, California, Nevada) and Mexico (Baja California).

Seasonality

can be found year-round.

Human Relevance

Frequently encountered indoors in its range, making it a common household spider in the southwestern U.S. and Baja California.

Similar Taxa

Trachelas tranquillusSimilar and ('Broad-faced Sac Spider'), but T. tranquillus occurs in eastern North America rather than the southwest; also differs in preference for deciduous woodlands.