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Photo#67793
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
Yep. They spin cocoons. The pupae are inside.

 
where
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.

 
whoa
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.

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