Allomengea dentisetis

(Grube, 1861)

Lace Sheet-web Weaver

Allomengea dentisetis is a sheetweb spider in the Linyphiidae, commonly known as the Lace Sheet-web Weaver. It has a notably broad geographic distribution spanning both the Nearctic and Palearctic regions, with records from North America and across northern Asia. The was first described by Grube in 1861. Despite its wide range, it remains poorly documented in terms of natural history.

Pronunciation

How to pronounce Allomengea dentisetis: /æl.oʊˈmɛn.dʒi.ə dɛnˈtiː.sɛ.tɪs/

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

Identification

As a member of Linyphiidae, this possesses the -typical characteristics of small to minute body size and the construction of sheet webs. Specific diagnostic features for distinguishing A. dentisetis from and other linyphiids require examination of genitalic , particularly the male and female . The specific epithet 'dentisetis' refers to toothed setae, which may be a diagnostic character. Accurate identification typically requires microscopic examination and comparison with or authoritative keys.

Distribution

North America (including USA and Canada, with Alaska specifically noted); Russia (spanning Siberia to the Far East, and European Russia); Kyrgyzstan; China; Mongolia; Japan. The trans-Beringian distribution pattern suggests either historical connectivity across Beringia or independent events.

Behavior

Constructs sheet webs, a defining of the Linyphiidae. These webs typically consist of a horizontal sheet of silk with a tangled network of threads above that knock down flying insects onto the sheet surface.

Ecological Role

Functions as a small-bodied in terrestrial , capturing prey in sheet webs. Likely contributes to regulation of small insect in its .

Similar Taxa

  • Other Allomengea species share the same general body plan and web architecture; genitalic examination required for definitive separation
  • Other Linyphiidae generaMany linyphiid spiders are superficially similar in size and web type; identification to and requires detailed morphological study

More Details

Taxonomic history

Originally described by Grube in 1861, this has maintained stable . The broad distribution has been confirmed through multiple data sources including GBIF, though the sparse observation count (6 records on iNaturalist) suggests it is either genuinely rare, undercollected, or difficult to detect.

Biogeographic significance

The amphi-Beringian distribution (present on both sides of the Bering Strait) makes this of interest for studies of Arctic and subarctic spider and vicariance.

Sources and further reading