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

Information, insects and people from 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


Family Pulicidae

Flea off of one my cats - Ctenocephalides felis Pulex irritans Cat Flea Cat Flea - Ctenocephalides felis Echidnophaga gallinacea? Male, Ctenocephalides felis felis? - Ctenocephalides felis - male Cat flea larva - Ctenocephalides felis Possibly an oriental rat flea (Xenopsylla cheopis)?
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Siphonaptera (Fleas)
Family Pulicidae
19 species in 11 genera in North America (
1 to 2.5 mm
one row of bristles on each abdominal segment
Most of the species that attack humans and domestic animals are found in this family. Includes the Oriental Rat Flea (Xenopsylla cheopis), Dog Flea (Ctenocephalides canis), Cat Flea (Ctenocephalides felis), and Human Flea (Pulex irritans) - all of which may bite humans.
See the Siphonaptera page for general information and references on fleas.
Internet References
preserved adult images of Oriental Rat Flea (Xenopsylla cheopis) and Cat Flea (Ctenocephalides felis) plus classification and references (David Maddison, Tree of Life)