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Post by bichos on Apr 23, 2011 1:51:51 GMT -8
Found this one in a log i've seen them before but still not sure what it is? initially I thought elateridae but they are not so hairy and wierd looking this one gives me the creeps, I am trying to rear it through but not even sure what to feed it. I have it in substrate I got him inso with any luck it will transform into something amazing  Attachments:
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Post by bichos on Apr 23, 2011 1:56:18 GMT -8
here is another angle Thanks in anticipation, I do wanna get him christened  Attachments:
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Post by prillbug2 on Apr 23, 2011 8:55:18 GMT -8
At first, I thought it was a Cerambycid larva, but after looking closely, I am thinking that it may actually be a Cossid caterpillar, since many of them are wood borers.
Jeff Prill
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Post by saturniidave on Apr 23, 2011 14:54:00 GMT -8
No, definitely beetle and not Cossid, it has no prolegs.
Dave
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Post by bichos on Apr 23, 2011 21:55:35 GMT -8
Yeah I'm pretty sure it is a beetle larva, I know cossid caterpillars as I have found them in similar situations, they are a bit similar but not as hairy.  ? |
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Post by lucanidae25 on Apr 24, 2011 15:33:14 GMT -8
I think they might be Passalidae larva.
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Post by prillbug2 on Apr 25, 2011 9:39:46 GMT -8
Nope, not Passalid larva. If you find one Passalid, you're going to find more of them, plus an adult or two. Remember they are eusocial insects. Besides, the head capsule is larger, and there is a short neck in a number of species. The other problem is that they are naked, no pubescence. Actually, I'm thinking that you have two different larvae, one lep, and one Cerambycid. The second one has a smaller head, is hairier and fatter. The first one has a larger head, the mandibles are serrated, and it's thinner. Also, a location would help, since you didn't give us that information.
Jeff Prill
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Post by lucanidae25 on Apr 25, 2011 14:58:55 GMT -8
Jeff
I'm sure they're from NSW, OZ
You are right I've seen Passalidae larva and they're alway in a family group. Also they're naked.
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poisonarrow
Full Member
Looking for fellow entomologists in the SF Bay area
Posts: 109
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Post by poisonarrow on Apr 25, 2011 20:29:51 GMT -8
Which brings me to a somewhat offtopic question. Did anybody of you ever find Lucanidae and/or larvae in tree trunks where Passalidae were present.
Passalidae have become my most hated (ok it's not that bad) beetles, as any wood I ever checked and they were present only contained them and nothing else. Even if big trunks were taken by Passalidae, the probability of finding Lucanidae was close to zero.
Thanks for your inputs ;-)
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poisonarrow
Full Member
Looking for fellow entomologists in the SF Bay area
Posts: 109
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Post by poisonarrow on Apr 25, 2011 23:22:13 GMT -8
Thanks for the infos ;-)
As for your larva, no clue, never came across something similar yet. My out of the blue guess would be Cerambycidae. Hope you can manage to breed it into an adult and then we will know, hahaha.
Different wood preferences of Lucanidae and Passalidae might be one reason. But then again, I have examined really long rotten logs with the same state. One corner had some Lucanidae, the other had Passalidae. I guess that Passalidae somehow manage to scare away Lucanidae. In that way, my theory goes as far as that there even might be some kind of communication. I had larva of Odontolabis, which often stridulate. These larva build there own tunnel systems and never seemed to enter the caves of the other larva. However, there are always a few that raid the caves of their brethren and eat them. These often became much larger specimen. So, communication might be one point that keeps the Lucanids away. Plus Lucanidae larvae normally do not have their parents with the to defend them, unlike the Passalidae. I think both are, at least in some cases, directly competing for the same food source.
Having checked hundreds of log for Lucanids, well, I share your hatred for Passalidae, hahaha.
Cheers
ben
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Post by bichos on Jan 23, 2012 4:49:54 GMT -8
I still have no idea what this larva is, so much for the bug id section of this forum  So.. I am rasing it as my one very own bug children and it has pupated, now I hope it emerges and my curiosity is satisfied once and for all. Attachments:
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Post by bichos on Jan 23, 2012 5:01:22 GMT -8
To all you passalidae haters; I share your pain, and raise you, as I have foolishly looked for lucanidae in jungles of southern Mexico, thinking that if I chopped enough logs I would find a super rare Cantharolethrus homoderoides (known only from the type specimen) only to learn it was erroneously labelled prior to description and never actually occured there. orton.catie.ac.cr/cgi-bin/wxis.exe/?IsisScript=OET.xis&method=post&formato=2&cantidad=1&expresion=mfn=025060 Mexico coincidently happens to be a World stronghold for passalidae... |
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Post by bichos on Nov 26, 2012 2:40:50 GMT -8
Ok it has finally emerged.
It IS a beetle
any last guesses??? before I post a picture in a couple of days...
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Post by lucanidae25 on Nov 26, 2012 3:57:57 GMT -8
I'm hoping it's Eurhamphus fasciculatus. |
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Post by bichos on Nov 26, 2012 20:01:28 GMT -8
haha
I WISH, it is way too hairy to be a weevil
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