Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Subfamily Pselaphinae - Ant-loving Beetles

Ant-loving Beetle - Rybaxis Pselaphinae (Ant-loving Beetles), lateral - Batrisodes frontalis - male Pselaphinae - Cedius Pseudactium arcuatum (LeConte) - Pseudactium arcuatum Pselaphin - Decarthron stigmosum Pselaphin - Decarthron longulum - female Beetle #5 - Ctenisodes Adranes taylori Wickham - Adranes
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Staphyliniformia)
Superfamily Staphylinoidea (Rove, Carrion and Fungus Beetles)
Family Staphylinidae (Rove Beetles)
Subfamily Pselaphinae (Ant-loving Beetles)
Other Common Names
Short-winged Mold Beetles
Synonyms and other taxonomic changes
formerly considered a separate family, Pselaphidae; Clavigerinae is now treated as a subfamily
710 spp. in >100 genera in our area(1)(2), >8,000 spp. worldwide
0.5-5.5 mm (average 1.5 mm)(1)
abdomen broader than head and usually not flexible; elytra short, exposing much of the upper surface of the abdomen; antennae clubbed
under stones, loose bark, moss, forest litter, and in ant nests
Pselaphines are predators. (they do not feed on mold, even though it was implied by their older common name, "ant-like mold beetles"(1))
Three obligate troglobiotic spp. from central TX are federally listed as endangered: Batrisodes texanus, B. venyivi, and Texamaurops reddelli
Print References
Chandler, D.S. 1992. The Pselaphidae (Coleoptera) of Texas caves. Pp. 241-253 In: J.R. Reddell, (editor). Studies on the cave and endogean fauna of North America II. Speleological Monographs, v. 3, Texas Memorial Museum, Austin.
Internet References
biology and other info - G.R. Burgess
classification - Tree of Life
Works Cited
1.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.
2.A catalog of Coleoptera of America north of Mexico. Family: Pselaphidae
Chandler D.S. 1997. USDA Agriculture handbook no. 529-31. x + 118 pp.