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Cocoon - Lophocampa ?

Cocoon - Lophocampa ?
Salaberry-de-Valleyfield, Quebec, Canada
November 6, 2020

Marc Bélisle found interesti
Marc Bélisle found interesting references concerning the mode of reproduction of certain species of the genus Orgyia. This information seems to corroborate the hypothesis of such a cocoon. Here are those references:

"Adults emerge from mid-April to early May. The flightless females remain on their cocoons and release a sex pheromone to attract males. The sex pheromones of Orgyia detrita and Orgyia leucostigma have been characterized (Grant et al. 2003, Gries et al. 2003).

After mating, the females lay a mass of eggs directly on the cocoon and cover them with a protective covering. Detrita and definita females cover their eggs with a secretion and then rub setae from their bodies onto the secretion to form a protective layer over the eggs. Leucostigma females cover their eggs with a frothy secretion but do not cover the secretion with setae (Ferguson 1978). The egg stage is the overwintering stage for all three species.

Voir Fig. 20-23 :

Added that to the Info page
Check it and let us know if anything needs to be changed.

Everything looks fine. Thank
Everything looks fine. Thanks !

The comparison photo looks ve
The comparison photo looks very similar. I think this is the most plausible hypothesis. Thanks for your help.

for comparison

Was it an empty cocoon?
Wonder if this isn't Orgyia? The flightless females lay their eggs directly on the old cocoon.

I dont know. I didn't touch
I dont know. I didn't touch it.

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