Ozyptila trux

Ozyptila trux, the yellow leaflitter crab spider,[2] is a crab spider species with Palearctic distribution (introduced in Canada).

Ozyptila trux
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Arachnida
Order:
Araneae
Family:
Thomisidae
Genus:
Ozyptila
Species:
O. trux
Binomial name
Ozyptila trux
(Blackwall, 1846)[1]
Subspecies

Ozyptila trux devittata Strand, 1901 — Norway

Synonyms[1]
  • Thomisus trux Blackwall, 1846
  • Ozyptila belma Gertsch, 1953

Description

Body length female 4-5.5 mm; male 3.3–4 mm.[2] The apophysis on the lateral tibia is approximately half the length of the cymbium, the median apophysis has 2 processes, pointing against towards other at right angles. The epigyne has a process in anterior epigynal region, wider than long. The prosoma is light brown, with 2-4 dark stripes along its length, the legs are uniformly light brown, as is the opisthosoma.[3]

Distribution

Ozyptil trux has a Palearctic distribution but has been introduced to Canada.[1] In Great Britain it is widespread but is commoner in the north and west.[4] It was known in Canada from a single female collected near Montreal which was designated as the holotype of a new species Oxyptila belma by Gertsch, subsequent comparisons with specimens of O. trux collected in England showed that the Canadian specimen was the same species. It may have been accidentally introduced to the site it was collected from and since it was not subsequently recorded may not have become established.[5]

Habitat and ecology

Ozyptil trux has a catholic habitat niche, being found in all types of wet and dry grassland, heath and woodland, from sea level to 350 m in southern Scotland. Adults may occur throughout the year although the spider may spend much of the season inactive or within the upper zone of the vegetation thus not being liable to capture. Data from the British Arachnological Society shows that adults have been recorded throughout the year, with males recorded from February to November, but peaking in the late spring and early summer.[4]

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See also

References
  1. "Ozyptila trux (Blackwall, 1846)". World Spider Catalogue. Natural History Museum Bern. Retrieved 20 September 2016.
  2. "Ozyptila trux (Blackwall, 1846) (Yellow leaflitter crab spider)". University of Copenhagen/Natural History Museum, Aarhus. Retrieved 20 September 2016.
  3. "Ozyptila trux (Blackwall, 1846)". Nentwig W, Blick T, Gloor D, Hänggi A, Kropf C: Spiders of Europe. Retrieved 20 September 2016.
  4. "Summary for Ozyptila trux (Araneae)". Spider and Harvestman Recording Scheme website. British Arachnological Society. Retrieved 20 September 2016.
  5. Dondale, C.D.; Redner, J.H (1975). "The genus Ozyptila in North America Araneida,Thomisidae" (PDF). J. Arachnol. 2: 129–181.

"Ozyptila trux" at the Encyclopedia of Life

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