Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Information about the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


TaxonomyBrowse
Info
ImagesLinksBooksData

Genus Synema

Synema parvulum ? - Synema parvulum Black-tailed Crab Spider (Synema parvulum) - Synema parvulum - female One of Crab? - Synema parvulum S. parvulum - dorsal - Synema parvulum - male Crab Spider for ID - Synema parvulum - female Brown Striped Crab - Synema parvulum Synema parvulum - female Crab spider - Synema parvulum
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Thomisidae (Crab Spiders)
Genus Synema
Numbers
3 species found in North America.
Identification
According to Gertch's (1939) keys to the species: (Only neomexicana, parvulum & viridans are found in North America)

Synema neomexicana carapace uniformly dark brown with a narrow white seam, dorsum of abdomen grey to white (but the holotype female, which is the only known specimen, is from Las Vegas).

Synema parvulum Abdomen with a large dark caudal maculation, otherwise pale. Eyes of anterior row nearly straight. Carapace light brown.

Synema viridans has a green carapace and legs, abdomen without maculation.
Range
Synema neomexicana - collected in Nevada and New Mexico.
Synema parvulum - southern United States, occasionally north to southern New Jersey.
Synema viridans - southeastern United States; Texas; Iowa.
(these ranges taken from Gertsch 1939b(1))
Print References
Gertsch, W. J., 1939b. A revision of the typical crab spiders (Misumeninae) of America north of Mexico. Bull. Amer. Mus. Nat. Hist. 76: 277-442. [online version available, see here]
Internet References
Smithsonian Plate - Black and white drawings.
Works Cited
1.A revision of the typical crab spiders (Misumeninae) of America north of Mexico
Willis J. Gertsch. 1939. Bulletin of the American Museum of Natural History 76: 277-442.