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Photo#35126
Firefly Larva

Firefly Larva
Wayland, Middlesex County, Massachusetts, USA
October 19, 2005
Size: 10-12mm
Are the light colored areas on these larva the lights of a firefly?

Moved

Moved
Moved from Fireflies.

Yes, they're firefly larvae.
I think the light-colored ventral surface of the posterior segments is where the light is produced. Here's one glowing:

 
Thanks Jim
Good shot of the glow coming from the larva. I didn't know the larva could glow. I'll have to collect the next one I find, and see if it glows at night like yours.

 
Even the pupae glow
but apparently only if they're bumped, jostled, or otherwise molested. I suspect it is to advertise the fact that they are a firefly and taste awful if chomped.

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