Pityohyphantes subarcticus

Chamberlin & Ivie, 1943

Taiga Sheetweb Weaver

Pityohyphantes subarcticus is a of sheetweb weaver spider in the Linyphiidae, commonly known as the Taiga Sheetweb Weaver. It occurs in and subarctic regions of western Canada and Alaska. As a member of the Pityohyphantes, it constructs characteristic hammock-shaped webs suspended in vegetation. The species was described by Chamberlin and Ivie in 1943.

Pronunciation

How to pronounce Pityohyphantes subarcticus: /ˌpɪti.oʊˈhaɪfæntiːz ˌsʌbɑːrˈktɪkəs/

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

Identification

Reliable identification to level requires examination of external genitalia. As a member of the Pityohyphantes, it likely shares the characteristic abdominal pattern: a brown or reddish jagged-edged band down the midline on an ivory background. Mature females are approximately 5-7 mm in body length, with males slightly smaller. Distinguished from cobweb weavers (Theridiidae) by prominent setae on the legs, whereas cobweb weavers have spine-free legs.

Habitat

Associated with coniferous and hardwood forests. Webs are constructed in foliage, typically well above ground level. May also build webs on fences or building exteriors. Inferred from congeneric and distribution to occupy forest and taiga environments.

Distribution

Canada (Alberta, British Columbia, Manitoba) and USA (Alaska).

Behavior

Constructs slightly convex hammock-shaped sheet webs suspended by a maze of threads above the platform. The spider hangs upside down beneath the web and responds to entangled prey. Usually conceals itself on the underside of peripheral foliage rather than occupying the web center. Mature males cease web-building to search for mates.

Ecological Role

of small insects; contributes to regulation in forest .

Similar Taxa

Tags

Sources and further reading