Linyphia_triangularis

<i>Linyphia triangularis</i>

Linyphia triangularis

Species of spider

Linyphia triangularis is a European species of spider in the family Linyphiidae first described by Carl Alexander Clerck in his 1758 Svenska Spindlar.

Quick Facts Linyphia triangularis, Scientific classification ...

Description

Linyphia triangularis grows up to 6 millimetres (0.24 in) long. The carapace is pale brown with darker markings along the edges and down the centre line; the opisthosoma has a coarsely serrate brown band against a white background, with further brown markings along the sides. The legs are greyish brown, and bear many long spines.[1]

Distribution

Linyphia triangularis is abundant throughout Europe.[1] It has been introduced to the U.S. state of Maine, having been first reported there on 28 August 1983 at Stover Corner.[2] It has been recorded from at least 15 of the state's 16 counties,[2] and is now abundant within Acadia National Park and some other coastal parts of the state.[3][4]

Ecology

Mating behaviour

Linyphia triangularis lives in a wide range of habitats, where it may be found among low bushes and vegetation. It spins a horizontal sheet-web, and rests on the underside of the web for its prey.[5] Adults are active in the late summer and autumn.[1][5] The prey are snared by "barrage lines" above the web, and fall onto the horizontal sheet, where they are killed by L. triangularis, but are not wrapped in silk.[1]

References

  1. [1]
    Dick Jones (1983). Country Life Guide to the Spiders of Britain and Europe. Country Life Books. pp. 290–291. ISBN 0-600-35614-0.
  2. [2]
    Daniel T. Jennings; Kefyn M. Catley & Frank Graham Jr. (2002). "Linyphia triangularis, a Palearctic spider (Araneae, Linyphiidae) new to North America" (PDF). Journal of Arachnology. 30 (1): 455–460. doi:10.1636/0161-8202(2002)030[0455:ltapsa]2.0.co;2. S2CID 86175928.
  3. [3]
    Jeremy D. Houser (2007). The invasion of Linyphia triangularis (Araneae: Linyphiidae) in Maine: ecological and behavioral interactions with native species (Thesis). University of Massachusetts Amherst.
  4. [4]
    Jeremy D. Houser; Daniel T. Jennings & Elizabeth M. Jakob (2005). "Predation by Argyrodes trigonum on Linyphia triangularis, an invasive sheet-web weaver in coastal Maine". Journal of Arachnology. 33 (1): 193–195. doi:10.1636/s03-15. JSTOR 3706391. S2CID 86190083.
  5. [5]
    D. Marriott. "Summary for Linyphia triangularis (Araneae)". Spider and Harvestman Recording Scheme website. Retrieved September 23, 2013.
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