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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Scarab, Stag and Bess Beetles (Scarabaeoidea) » Scarab Beetles (Scarabaeidae) » May Beetles and June Bugs (Melolonthinae) » Melolonthini » Lined June Beetles (Polyphylla)
Photo#266599
Possible Cedar Bark Beetle? - Polyphylla - male
Copyright © 2008 mikelowery

Possible Cedar Bark Beetle? - Polyphylla - Male
Near Trinidad , Colorado, USA
August 20, 2008
Size: approximately 6 or 7 cm
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Contributed by mikelowery on 17 April, 2009 - 9:41am
Last updated 15 May, 2009 - 5:08pm

A scarab rather...
Looks like a Polyphylla, one of the 'June beetles'. The white elytra stripes and expanded antennae (males) are diagnostic.
… Tim Loh, 17 April, 2009 - 9:49am login or register to post comments

 
likely Polyphylla decemlineata
- for reference. These are quite common in California as the weather warms up, not sure about their range but the guide has them in CO. The noted size is still large for P. deemlineata. The ones I've seen are usually just about an inch in size but seem larger.
… M. N. O'Donnell, 17 April, 2009 - 5:11pm login or register to post comments

 
size[-related] matters
  • the size of this one is overestimated at least twice (slightly over an inch, actually)
  • bark beetle size is mostly 1-3 mm (0.1-0.3 cm) and never exceeds 1 cm; see images here
… v belov, 17 April, 2009 - 11:38am login or register to post comments

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