Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar

TaxonomyBrowseInfoImagesLinksBooksData
Photo#80971
diving beetle - Coptotomus longulus

diving beetle - Coptotomus longulus
Williston, Chittenden County, Vermont, USA
September 30, 2006
Size: ~7mm

Moved
Moved from Coptotomus.

Moved
Thanks Don, it looks just like Jim's photos in the guide.

Dytiscidae: Coptotomus sp.
One of the Coptotomus species I believe.

 
C. lenticus?
would C. lenticus be a good determination? Looking at Downie and Arnett, C. lenticus seem to key with "pronotal markings black and separated by distance greater than width of posterior mark", and "Sutural black striae usually of equal width over entire length of elytra" (as opposed to "greatly narrowed over apical 2/3"); "irrorate area of disk with dark blotches laterally".

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.