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Upcoming Events

Discussion of 2018 gathering

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

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Family Corinnidae - Antmimics and Ground Sac Spiders

Ant Mimic Spider - Castianeira longipalpa Castianeira amoena BG1176 D0039 - Castianeira amoena - male Gnaphosidae - Sergiolus? - Castianeira thalia Castianeira - Castianeira amoena ground sac spider, black spider with red spot, MT #3 - Castianeira descripta - female Castianeira longipalpa - male Castaneira sp? - Castianeira - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynes )
Family Corinnidae (Antmimics and Ground Sac Spiders)
Synonyms and other taxonomic changes
Meriola and Trachelas transferred to new family Trachelidae by Ramirez, 2014(1). Drassinella, Phrurolithus, Phruronellus, Phrurotimpus, Piabuna, and Scotinella transferred to new family Phrurolithidae by Ramirez 2014(1).

Reclassified the Trachelas genus from Clubionidae to Corinnidae (source: 2005 AMNH World Spider Catalog)
7 Genera found in the US/Canada.
Castianeira - 26 species
Creugas - 2 species (C. bajulus has been found in southern CA)
Falconia - 1 species
Mazax - 2 species (Castianeira/Micaria look-alike)
Myrmecotypus - 1 species (Micaria look-alike)
Septentrinna - 2 species
Xeropigo - 1 species
Mazax kaspari - male abdomen constricted and looks kind of like C. thalia. Dorsum with pattern of four brownish-black horizontal bands and brownish-black posterior as in male, except base coloring off-white.
Exact distribution within these countries will be added when time permits.

- gertschi - Southern California, Mexico
- modesta - Southern California
- sclerata - southern CA
- siskiyou - northern CA
- sonoma - CA (San Francisco area only)
- unicolor - western USA, CA, NV, UT, OR, southern ID, NM

- kaspari - Known only from the type locality; Presidio Co., TX(2)
- pax - Southernmost Texas south to Panama(3)

Phrurolithus - All in the USA
- absurdus
- aemulatus
- alatus
- apacheus
- apertus
- banksi
- callidus
- camawhitae
- catalinius
- concisus
- connectus
- dolius
- duncani
- emertoni
- goodnighti
- kastoni
- kentuckyensis
- leviculus
- oabus
- paludivagus
- parcus
- pinturus
- pipensis
- schwarzi
- similis
- singulus
- umbratilis

- brevispina - USA
- longispina - USA
- nanna - USA
- pallida - USA
- xerophila - USA

- bicalcarata, USA & Mexico
- steckleri, USA & Mexico

- tridentiger - USA
Internet References
~ - Mazax kaspari full description with drawings.

~ Revision of Drassinella Platnick & Ubick, 1989. - Descriptions, ranges & drawings of palps/epigynes.
Works Cited
1.The morphology and phylogeny of dionychan spiders
Ramírez, Martín J. 2014. Bulletin of the American Museum of Natural History.
2.A new species of Mazax from Texas (Araneae: Clubionidae)
Cokendolpher, J. C. 1978. Journal of Arachnology 6: 230-232.
3.The Spider Subfamily Castianeirinae of North and Central America
J. Reiskind. 1969. Bull. Mus. of Comp. Zool. Vol 138: 163-325.