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For Insects, Spiders & Their Kin
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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


Genus Ctenocephalides - Cat and Dog Fleas

Flea (Siphonaptera) - Ctenocephalides felis Cat flea? - Ctenocephalides felis Dog Flea - Ctenocephalides canis Flea off of one of my cats - Ctenocephalides felis Dead flea found in cat's bed - Ctenocephalides felis Female, Ctenocephalides felis felis? - Ctenocephalides felis - female Flea - Ctenocephalides Cat flea larva - Ctenocephalides felis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Siphonaptera (Fleas)
Family Pulicidae
Genus Ctenocephalides (Cat and Dog Fleas)
2 species in North America: the Cat Flea and the Dog Flea (
1.5-2.5 mm
conspicuous genal and pronotal combs; one row of bristles on each abdominal segment
See the Siphonaptera page for general information and references on fleas.
The Dog Flea (C. canis) is an intermediate host for the dog tapeworm. The tapeworm develops in the flea larva after the larva ingests a tapeworm egg. When a dog bites an adult flea, the tapeworm enters the dog's digestive system.
Internet References
larva image of C. canis (Kevin Baldwin, Momouth College, Illinois)