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

Discussion of 2018 gathering

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

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

Elaterid - Limonius nimbatus - female

Elaterid - Limonius nimbatus - Female
Pulaski County, Kentucky, USA
May 13, 2008
Size: 4 mm
Blaine, this is the "Horistonotus" specimen I mentioned. Not really sure its that now.

Its only barely visible, but the anterior pronotal corners are orange just like the hind corners.

Images of this individual: tag all
Elaterid - Limonius nimbatus - female Elaterid - Limonius nimbatus

Moved tentatively
Moved from Horistonotus.

I was checking through some other genera on a hunch and noticed this small Limonius sp. that matches well with the specimen.

it does match well with the MCZ synonym. The scutellum is very cardiophorine-like and might cause keying issues using American Beetles. I myself fell for this feature when examing the specimen initially (although I must admit I didn't key it but rather went by gestalt and features of the scutellum). The more I study elaterids, the more I want to toss gestalt out of the window-LOL.

L. nimbatus vs L. definitus
From Al Dhafer's revision, essentially these two species are quite similar. Aside from differences in male genitalia, L. definitus has antennal segments 2+3 subequal to 4 and L. nimbatus has antennal segments 2+3 shorter than 3. Size for L. definitus is listed as 4.5 to 5.8 mm and L. nimbatus is listed as 3.5 to 4.5 mm.

I'm having trouble convincing myself about the antennal segment lengths, but the size is definitely slightly less than 4 mm, so I still think this is L. nimbatus.

ID confirmed...
after (re)examination of the specimen in-hand :-)


Moved from Click Beetles.

This sure appears to be a Horistonotus, as it does not have the lateral carina extending onto hypomeron. Using Wells' 2000 key to Horistonotus of North America, it 'keys' to H. densus but doesn't look much like the MCZ type. We will have to ponder more on this one...

Horistonotus vs Cardiophorus
I have recent keys to both genera. You can check the hypomeron for a fine lateral carina/groove (Cardiophorus) or lack thereof (Horistonotus).

looks cool... and quite cardiophorinesque

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