Haplodrassus stuxbergi

Members of Haplodrassus can be distinguished from other Gnaphosidae genera by the structure of the male pedipalp and female epigynum. Haplodrassus stuxbergi specifically requires examination of genitalic characters for reliable identification from congeners such as Haplodrassus signifer and Haplodrassus rufipes. General body form is typical of the genus: elongated carapace, cylindrical abdomen, and often with a dark dorsal pattern.

Ground-dwelling; has been recorded in open terrestrial habitats across its range. Specific microhabitat preferences are not well documented.

Transcontinental Holarctic distribution: recorded across northern Europe through Russia (European Russia to the Far East), and in North America including Canada. GBIF records indicate presence in boreal and temperate regions of both continents.

Cursorial ground-dwelling hunter; does not build a prey-capture web. This behavior is characteristic of the family Gnaphosidae.

Generalist predator of small invertebrates in ground-layer communities.

• Haplodrassus signiferOverlapping distribution in Eurasia; requires genitalic examination to distinguish
• Haplodrassus rufipesSimilar ground-dwelling habit and general morphology; genitalic characters needed for separation
• Other Gnaphosidae genera (e.g., Gnaphosa, Zelotes)Similar overall body plan and ground-dwelling ecology; distinguished by eye arrangement and genitalic structure

• spider
• ground spider
• Holarctic
• cursorial hunter

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life