Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Spring 2021 gathering in Louisiana, April 28-May 2. Here's how to add your images.

National Moth Week 2020 photos of insects and people.

Photos of 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

Puparia - Ctenocephalides

Puparia - Ctenocephalides
Gainesville, Alachua County, Florida, USA
July 29, 2006
This is what a really disgusting infestation looks like. It also looks like dozens of fleas jumping onto your legs as you activate the pupae to emerge.

so these are
flea pupae?

Yep. They spin cocoons. The pupae are inside.

are they? inside the pillow of a couch or something? thats some nasty s**t man

Just in a crack in the floor.
Just in a crack in the floor.

one more qs
what do you mean activate the pupae to emerge?

They stay in the cocoon until they sense vibration and CO2. Then they emerge as adults, ready to bite. I suppose that means they molt in the cocoon so that their cuticle hardens, then they are ready to go.

thats pretty cool. i think i read something similar maybe about rabbit fleas. the female flea will not lay her eggs until the female rabbit releases estrogen or a female hormone released during pregnancy. thanks Sean, always a pleasure learning from you man.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.