Ebrechtella tricuspidata

Ebrechtella tricuspidata is a species of crab spiders belonging to the family Thomisidae. [2]

Ebrechtella tricuspidata
Ebrechtella tricuspidata. Male
Female
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Arachnida
Order:
Araneae
Family:
Thomisidae
Genus:
Ebrechtella
Species:
E. tricuspidata
Binomial name
Ebrechtella tricuspidata
(Fabricius, 1775) [1]
Synonyms

Subspecies

Subspecies include: [3]

  • Ebrechtella tricuspidata tricuspidata (Fabricius, 1775) - Palearctic ecozone
  • Ebrechtella tricuspidata concolor (Caporiacco, 1935) - Karakorum

Distribution

This species is widespread in the Palearctic ecozone (Europe, Turkey, Caucasus, Russia to Central Asia, China, Korea and Japan).[4][5] It does not exist in the United Kingdom.[6]

Habitat

These medium-sized crab spiders inhabit dry meadows and sunny forest edges, waiting for prey well camouflaged in flower and foliage. [7]

Description

Ebrechtella tricuspidata can reach approximately a body length of 5–6 millimetres (0.20–0.24 in) in females, while males are smaller, reaching a body length of 2.5–3.5 millimetres (0.098–0.138 in).[8] The cephalothorax (Prosoma) is light green in females, with sometimes indeterminate reddish markings on the back of the whitish-yellowish abdomen. These reddish markings usually consist of two broad rear-connected bands. Also legs are light green.

Males are clearly different-looking (sexual dimorphism). They have light brown cephalothorax with bright median stripe and the first two pairs of legs, while the bottle-shaped abdomen (Opisthosoma) is usually pale green, laterally with dark brown markings. [7]

Biology

Adults from both sexes can be found in May and June.

  • Male, side view
  • Female, dorsal view
  • Female, preparing a leaf for egglaying
  • Female, catching a fly
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References
  1. Fabricius, J. C. (1775) Systema entomologiae, sistens insectorum classes, ordines, genera, species, adiectis, synonymis, locis descriptionibus observationibus., Flensburg and Lipsiae, 832 pp. (Araneae, pp. 431-441).
  2. Catalogue of life
  3. Biolib
  4. World Spider Catalog Version 19.0
  5. Fauna europaea
  6. Spider and Harvestman Recording Scheme website
  7. Spiders of Europe
  8. Roberts M. J. (1995): Collins Field Guide. Spiders of Britain & Northern Europe
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