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

Upcoming Events

BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Previous events

Dytiscid - Hydrocanthus iricolor

Dytiscid - Hydrocanthus iricolor
Groton, Middlesex County, Massachusetts, USA
October 1, 2011
Size: 4.8mm
Netted from a weedy edge of a swamp.

Images of this individual: tag all
Dytiscid - Hydrocanthus iricolor Dytiscid - Hydrocanthus iricolor

Moved from Hydrocanthus oblongus.

Tom sent me a recently collected female. I compared her with several series of H. oblongus I have from Florida. My initial ID was incorrect. Sorry for the confusion.

for me please.

I collected 2, one for you and one to send to Tim Loh:-)


Hydrocanthus oblongus
Brady thanks for the species ID. These were common in one area of the swamp, with a couple dozen caught in one net sweep through the water.

H. oblongus
Has this species been reported so far north? Young's papers on Hydrocanthus indicate this coastal species only occurs from Texas to South Carolina. (1)

Ciegler (2003) lists New Jers
Ciegler (2003) lists New Jersey in the distribution for this species. I think I've seen other records, but can't recall what I looked at when I placed the name on this image. I remember thinking that Massachusetts was a pretty far north. I'll try to reconstruct my thoughts.

more records
Stepping into this late - just perusing records of this species on the web - but we have three collection locations within Iowa (East central and SW)

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