Sergiolus angustus

(Banks, 1904)

Sergiolus angustus is a ground spider in the Gnaphosidae, native to western North America. Like other members of its , it exhibits bold coloration that may represent mimicry of velvet ants (Mutillidae). The is medium-sized, , and nomadic, actively hunting rather than building webs to capture prey. It constructs silk retreats for molting, guarding, and .

Pronunciation

How to pronounce Sergiolus angustus: //sɛrˈdʒiːələs æŋˈɡʌstəs//

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Distribution

Western North America. Records from Alberta and Saskatchewan, Canada.

Seasonality

active during warmer months; can be found in almost any season.

Diet

Active hunter that does not spin webs to snare prey. Specific prey preferences for this are not documented.

Life Cycle

Constructs silk retreats for molting and for females to guard sacs. may live over one year.

Behavior

and nomadic. Agile when fleeing danger. Often prowls through leaf litter; capable climber found on foliage and walls.

Human Relevance

Occasionally found indoors. Can be maintained in captivity with minimal care; requires water source separate from prey.

Similar Taxa

Sergiolus capulatusOverlapping range in western regions; distinguished by genitalia characteristics
Sergiolus montanusAnother western ; separation requires examination of (females) or (males)
Callilepis spp.Other gnaphosids with similar preferences; distinguished by genitalia