Pityohyphantes minidoka
Chamberlin & Ivie, 1943
Pityohyphantes minidoka is a sheetweb spider in the Linyphiidae, described by Chamberlin and Ivie in 1943. The name derives from Greek meaning 'pine weaver,' reflecting the typical association of related . As a member of the hammock spider group, it constructs a distinctive web architecture. The species is known from the United States, with records from Idaho and potentially broader western North American distribution.
Pronunciation
How to pronounce Pityohyphantes minidoka: //ˌpaɪ.ti.oʊ.hɪˈfæntiːz ˌmaɪnɪˈdoʊkə//
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Identification
Pityohyphantes minidoka belongs to the hammock spider characterized by a distinctive abdominal pattern: a brown or reddish jagged-edged band running down the midline on an ivory background. Reliable -level identification requires examination of external genitalia. The genus can be distinguished from cobweb weavers (Theridiidae) by prominent setae on the legs, whereas cobweb weavers have spine-free legs. Mature females reach approximately 5-7 mm body length, with males slightly smaller.
Habitat
Based on -level information, Pityohyphantes typically inhabit coniferous forests, though they also occur in hardwoods. Webs are usually constructed in foliage well above ground level, sometimes on fences or building exteriors. The specific epithet 'minidoka' and distribution records suggest association with the Minidoka region of southern Idaho, potentially including sand dune and sagebrush steppe where related spider fauna have been documented.
Distribution
United States. Records indicate presence in Idaho, specifically the Minidoka area in the southern part of the state. The name references Minidoka, likely the type locality.
Behavior
As a sheetweb weaver, Pityohyphantes minidoka constructs a slightly convex silken platform suspended by a maze of threads above it. The spider hangs upside down beneath the sheet to capture prey. Individuals may conceal themselves on the underside of foliage at the web periphery. Mature males cease web-building and wander in search of mates, not feeding during this period.
Ecological Role
of small insects; contributes to structure in its .
Similar Taxa
- Pityohyphantes costatusShares the distinctive abdominal pattern and web architecture; differs in distribution and requires genitalia examination for definitive separation
- Pityohyphantes subarcticusAnother North American hammock spider with similar and preferences in western coniferous forests
- Theridiidae (cobweb weavers)Construct superficially similar tangled webs, but lack leg setae and have different arrangements and abdominal shapes
More Details
Etymology
The name Pityohyphantes combines Greek 'pitys' (pine) and 'hyphantes' (weaver), referring to the typical coniferous forest . The specific epithet 'minidoka' refers to the type locality in Idaho.
Taxonomic Note
Described by Chamberlin and Ivie in 1943, this is one of approximately sixteen Pityohyphantes species in North America, most occurring in western and northern coniferous forests.