Sunday, October 9, 2016

Some I.D Requests

Hello everybody!
Yesterday I went out to a very nice nature reserve and returned with some pretty cool bugs. I'm not exactly sure what species any of them are. Hope you guys can help me out!
Here's some pics.
I was told that these are probably P.pennsylvanica?
Chlaenius sp. ground beetles

Beetle larva
I would assume that the larva is a click beetle larva, but I'm not sure. If you guys can confirm that the roaches are P.pennsylvanica, give me a species I.D for the Chlaenius sp. beetles, and tell me what type of larva this is that would be amazing!
Update: Found three very odd insects today, a species of jumping bristletail(Machilidae)! Can someone help me I.D them and possibly give me some additional info such as what they eat, what their captive conditions should be like, etc.
Here a pic of a couple of them!
Jumping bristletails(Machilidae)
Would really appreciate some info on these guys, they are pretty awesome creatures!
Thanks for your help in advance, and until next time, goodbye!


  1. Yeah, those really look like P.pennsylvanica nymphs, they don't look like P.virginica nymphs for sure.

    Those beetles aren't Chlaenius, pretty sure they are an Agonum species, probably A.extensicolle. See here: [URL][/URL]

    That larva is a really cool find, it's a Merecantha contracta larva, a really cool darkling beetle that is hard to find in the wild and even harder to find in the hobby. Did you only find the one?

    1. Thanks for all the help man!:) Thought they were Chleanius due to the similar look, didn't look too far into it though. Wow, that's a cool darkling! Yea, I only found the one, I'm almost positive that I could find more if I went back to where I found them though, there was rotten wood and fallen logs everywhere! The larvae are going to be eating rotten wood right? Also are these guys known for being hard to breed or raise to adulthood?

  2. No problem, happy to help! :)

    Yeah, they look similar to Chlaenius, but lack the fuzzy setae that cover the elytra and pronotums of Chlaenius.

    Orin has bred Meracantha contracta, he did not mention any specific dietary needs or substrate moisture levels, but I'd keep them moist and mix in rotten wood with coconut fiber, just in case they need it. He says that the larva are fairly easy to rear, but have a low pupal survival rate.

    1. Thanks for the info,l'll definitely try to raise it and collect some more. BTW do you get your info such as the info you just provided me from Orin's books?

    2. Keep us updated, hope you find more and breed them, would be willing to buy/trade for some CB larva if you can produce some. :)

      Yes, the info about the M.contracta for example came from Orin's "Ultimate Guide To Breeding Beetles". :)

    3. BTW, the bristletails don seem to do well in captivity in my experience, I have kept individuals of both Machilidae and Meinertellidae and both died off pretty quickly in my care. They should be fairly easy to feed, however I never found out a way to stop them from rubbing all the scales off of their bodies in their enclosures, and they die once all their scales are gone.