Another ID help

[iturnrocks]

The first pic insnt very clear, its just for size, the rest are better.

This one is similar to the others, but there was only one of these. He was found under the same bark as the others. One difference is that when poked he would open his mandibles and stretch his head and tail back.

 

[lucanidae]

First glance looks like elateridae but I can't be sure, when I get time later tonight I'll verify that. Could be a tenebrionidae, and it's difficult to tell the difference between the two even with a scope.

 

[iturnrocks]

Dont know if this will help, but these were found in Kansas City, KS USA

 

[Mat]

Its a click beetle larvae of some sort, family Elateridae. Tenibrionid larvae (afaik) dont have the various teeth / ornamentation on the rear segment. This is usually pretty diagnostic and can be used to separte out the species if you can find a key.

Matt

 

[lucanidae]

Tenebrionidae definetly have urogomphi (those teethlike stuctures on tergum 9.) Check out this site for more info http://www.tenebrionidae.net/ The larvae of elateridae and tenebrionidae are extremely difficult to tell apart in many cases! I just keyed out tons of larvae of both of these family's using three different beetle keys, they are hard to differentiate.

Here is the class I just completed:

http://sws2.sas.cornell.edu/our/CoS...s,+Grubs,+and+Cutworms:+Larval+Insect+Biology

 

[mr_wendall]

I found one of these last year and it bit me hard enough to draw blood. OUch!