Epeirotypus

Epeirotypus is a genus of ray spiders that was first described by Octavius Pickard-Cambridge in 1894.[2]

Epeirotypus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Araneomorphae
Family: Theridiosomatidae
Genus: Epeirotypus
O. Pickard-Cambridge, 1894[1]
Type species
E. brevipes
O. Pickard-Cambridge, 1894
Species
  • E. brevipes O. Pickard-Cambridge, 1894 – Mexico to Costa Rica
  • E. chavarria Coddington, 1986 – Costa Rica
  • E. dalong Miller, Griswold & Yin, 2009 – China

Description
The eye arrangement of spiders in the genus Epeirotypus

Adult Epeirotypus species have a body length of 1–3 mm. The carapace ranges in colour from light yellow to almost black, and the head region is not elevated. The sternum is smooth, convex, and rounded to the rear. The abdomen is ovoid, usually with a dorsal pattern which varies by species and sometimes bearing posterior lateral tubercules. The legs are short and stout, light tan or sometimes dark with annulations. The femoral length is 1⁄3–1⁄2 the total width of the carapace, and the tarsi bear an irregular group of serrated hairs on the ventral side.[3]

They have eight eyes, all approximately equal in size. The AME are separated by half their diameter and the PME typically separated by their diameter.[3]

Species

As of June 2020 it contains three species, found in China, Costa Rica, and Mexico: E. brevipes, E. chavarria, and E. dalong.[1]

See also

References
  1. "Gen. Epeirotypus O. Pickard-Cambridge, 1894". World Spider Catalog Version 20.0. Natural History Museum Bern. 2020. doi:10.24436/2. Retrieved 2020-07-18.
  2. Pickard-Cambridge, O. (1894), "Arachnida. Araneida", Biologia Centrali-Americana, Zoology
  3. A., Coddington, Jonathan (1986). The genera of the spider family Theridiosomatidae. Smithsonian Institution Press. p. 39. OCLC 469775074.{{cite book}}: CS1 maint: multiple names: authors list (link)

Further reading
  • Coddington, J. A. (1986). "The genera of the spider family Theridiosomatidae". Smithsonian Contributions to Zoology. 422 (422): 1–96. doi:10.5479/si.00810282.422.
  • Álvarez-Padilla, F.; Hormiga, G. (2011). "Morphological and phylogenetic atlas of the orb-weaving spider family Tetragnathidae (Araneae: Araneoidea)". Zoological Journal of the Linnean Society. 162 (4): 713–879. doi:10.1111/j.1096-3642.2011.00692.x.
  • Miller, J. A.; Griswold, C. E.; Yin, C. M. (2009). "The symphytognathoid spiders of the Gaoligongshan, Yunnan, China (Araneae, Araneoidea): Systematics and diversity of micro-orbweavers". ZooKeys (11): 9–195.
  • Archer, A. F. (1953). "Studies in the orbweaving spiders (Argiopidae)". American Museum Novitates. 1622: 1–27.


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