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Photo#187551
Leaf Weevil - Polydrusus impressifrons

Leaf Weevil - Polydrusus impressifrons
Toronto, Ontario, Canada
May 24, 2008
confirmation please

Images of this individual: tag all
Leaf Weevil - Polydrusus impressifrons Leaf Weevil - Polydrusus impressifrons

open beak
Hi David,
Your ID looks right to me (but I am faaaaaaaar from an expert).
I just wanted to comment on what looks like the open mandible on the weevil. I posted a picture of a blue-green citrus root weevil a few days ago and it had the same open mandible. In both pictures it's the right mandible that is open. Coincidense?
Does anyone know why they have that???
Thanks!

 
Polydrusus impressifrons
Here is a very quick and sure way to differentiate this species from P. sericeus: note the large interocular space (dorsal gap between the eyes), and long temple (gap between the eye and where the head joins the thorax), which is larger than the diameter of the eye. (The temple is less than the diameter of the eye in sericeus). The difference is very clear when you compare the heads of the two species, and is easy to see in the guide images. And of course, impressifrons is generally a paler green, hence the common name Pale Green Weevil.
Regarding the mandible, please see my recent post in the guide page for P. impressifrons.

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