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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Long-horned and Leaf Beetles (Chrysomeloidea) » Leaf Beetles (Chrysomelidae) » Chrysomelinae » Chrysomelini » Chrysomelina » Chrysomela
Photo#316302
Chrysomelid Larva - Chrysomela
Copyright © 2009 James Bailey

Chrysomelid Larva - Chrysomela
Lake Louise, Banff NP, Alberta, Canada
August 5, 2009
Hundreds of these on Willow. Could not find any adults.

Images of this individual: tag all
Chrysomelid Larva - Chrysomela Chrysomelid Larva - Chrysomela
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Contributed by James Bailey on 6 August, 2009 - 4:40pm
Last updated 14 August, 2009 - 2:42pm

Moved
Moved from ID Request.
… James Bailey, 14 August, 2009 - 2:42pm login or register to post comments

probably Plagiodera versicolora
Probably Imported Willow Leaf Beetle - they occur by the hundreds and skeletonize willow leaves, like this individual is doing in the 2nd photograph. Larvae are black and glossy with rows of smooth tubercles; emitting drops of odorous liquid is one of their defense mechanisms.

This photo has an adult and three larvae:


The photo of this soon-to-molt larva is linked to two others of the larvae and leaf damage:
… Abigail M. Parker, 6 August, 2009 - 5:54pm login or register to post comments

 
Another vote for Chrysomela
Chrysomela larvae have the white glands that the larvae in BorealFalcon's photos have; Plagiodera larvae don't appear to have these.
… Charley Eiseman, 6 August, 2009 - 6:00pm login or register to post comments

 
Um, pretend I just edited my comment
I didn't see the Balabans' comment till I'd already posted mine, and now I can't go back and edit it...um, just pretend it DOESN'T say all that stuff about Plagiodera! (They do look rather similar, I knew I should've photographed the ones I reared...)
… Abigail M. Parker, 6 August, 2009 - 6:09pm login or register to post comments

 
Chrysomela aeniocollis?
Just a thought, seems to feed on Willow and is noted to be very destructive and common in Jasper and Banff NP.
… James Bailey, 14 August, 2009 - 2:47pm login or register to post comments

There are Willow Leaf Beetles in Chrysomela
in the guide here
… john and jane balaban, 6 August, 2009 - 5:49pm login or register to post comments

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