Euctenizidae
The Euctenizidae are a family of mygalomorph spiders. Originally created as a subfamily of Cyrtaucheniidae by Robert Raven in 1985, it was established as a family by Bond et al. in 2012.
They are now considered to be more closely related to Idiopidae.
Biology
Many, but not all, make wafer-like doors to their burrows, while others build the cork-like doors found commonly in the true trapdoor spiders. The biology of nearly all of the species is poorly known.
Distribution
The family occurs almost exclusively in the United States and Mexico. Common U.S. genera include Myrmekiaphila, Aptostichus and Promyrmekiaphila.
Genera
, this family includes eight genera and 79 species:Apomastus Bond & Opell, 2002 – United StatesAptostichus Simon, 1891 – Mexico, United StatesCryptocteniza Bond & Hamilton, 2020 – United StatesEntychides Simon, 1888 – Guadeloupe, Mexico, United StatesEucteniza Ausserer, 1875 – Mexico, United StatesMyrmekiaphila Atkinson, 1886 – United StatesNeoapachella Bond & Opell, 2002 – United StatesPromyrmekiaphila Schenkel, 1950 – United States