Danosoma or Lacon? - Lacon marmoratus - BugGuide.Net

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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Series Elateriformia » Elateroidea » Click Beetles (Elateridae) » Agrypninae » Agrypnini » Lacon » Marbled Click Beetle (Lacon marmoratus)

Photo#910652

Copyright © 2014 Drew Sheaffer

Danosoma or Lacon? - Lacon marmoratus

Fairborn, Wright State University woods, Greene County, Ohio, USA
April 18, 2014
Size: 15 mm

Not sure if setae were arising on the empodia or very basally on the claws.

Images of this individual: tag all

Danosoma or Lacon? - Lacon marmoratus

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Contributed by Drew Sheaffer on 18 April, 2014 - 11:19pm
Last updated 20 April, 2014 - 2:54pm

Moved

The sharply delineated, seemingly impunctate tarsal grooves on the hypomeron are diagnostic.

Moved from Agrypnini.

… Blaine Mathison, 20 April, 2014 - 2:54pm

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my money is on Lacon marmoratus

… v belov, 19 April, 2014 - 11:14am

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mine too

… Blaine Mathison, 19 April, 2014 - 11:15am

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Moved

Moved from ID Request.

… Blaine Mathison, 19 April, 2014 - 7:54am

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check the hypomeron...

while not all Lacon possess tarsal grooves on the hypomeron, neither of the Danosoma do. The larger Lacon (like marmoratus) usually do. So, if there are tarsal grooves on the hypomeron, this is definitely Lacon.
Looking for those pesky tarsal setae can be a pain in the pygidium...

Moving to tribal level for now.

… Blaine Mathison, 19 April, 2014 - 7:54am

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.

There are certainly distinct grooves on the hypomeron. I think I had mistaken this feature for "hypomeron with medial margin deeply sulcate" as in couplets 13 and 17 of American Beetles.

… Drew Sheaffer, 19 April, 2014 - 12:48pm

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then it is Lacon

please image the hypomeron and its grooves; the delineation of the grooves and their punctation are important characters. With that I should give you a species name. As stated earlier, my $$$ is on L. marmoratus.

… Blaine Mathison, 19 April, 2014 - 1:09pm

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