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Post by Borja Gómez on Nov 16, 2012 15:35:26 GMT -8
Hello I've been trying to id these 3 guys for a while without success. They come from Peru. The first one is this longhorn. It resembles a hammerhead shark, but no idea of what it is, not even the tribe. Attachments:
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Post by Borja Gómez on Nov 16, 2012 15:40:27 GMT -8
The second one is this. At first sight I thougth it was a chrysomelidae, but then after thinking for a while and looking at the way it has the legs bent it came to my head the image of a Bhyrrus, so could it be some kind of bhyrridae? I have to say that this nice guy have me intrigued besides his stunning look. Attachments:
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Post by Borja Gómez on Nov 16, 2012 15:44:19 GMT -8
And finally this one. It's about 4 cm. Not a cerambycidae, but I think it can be a a chrysomelid or erotylidae, but big, because it measures about 4cm. Thanks for the help! Regards Attachments:
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Post by thanos on Nov 16, 2012 16:31:20 GMT -8
#1 is a Tapeinini Lamiinae in the genus Tapeina.
#3 Chrysomelid, Alurnus sp.
Thanos
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Post by prillbug4 on Nov 16, 2012 18:46:27 GMT -8
My thinking is that it's Tapeina rubronigra Marinoni, 1972. The only one I know from Peru is Tapeina erectifrons Marinoni, 1972. But you'll probably have to get Marinoni's paper to figure that out for certain.
Jeff Prill
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Post by thanos on Nov 17, 2012 17:18:15 GMT -8
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Post by prillbug4 on Nov 17, 2012 18:29:12 GMT -8
It's possibly Chlamys cinerea Lacordaire, 1847. The usual color is leaden, but some specimens are brilliant violaceous blue. There is a description of it in the electronic version of Biologia Centrali-Americana. The range was cited as from Mexico to Peru, but who knows, maybe the beetle has been reassigned based on the color differences? I don't know.
Jeff Prill
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Post by Borja Gómez on Nov 18, 2012 16:49:59 GMT -8
Hello
Thanks guys for the identifications.
I totally agree with the Alurnus sp. and the Cerambicid for me it's Tapeina rubronigra too. I took a look at the neotropical cerambycidae catalog at the genus, and the rubronigra seems the most similar besides not being cited for Peru. This is not strange as many species are cited only on few localities so, it's easy to find a new locality for many species searching a little bit.
So with the chrysomelid should I stick with the genus Chlamisus instead Chlamys? Maybe the nomenclatural change is related to sinonimy with the "Chlamys" mollusc bivalves.
Regards
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Post by thanos on Nov 18, 2012 19:51:29 GMT -8
Yes, the Tapeina is possibly rubronigra, it fits morphologically (the name of the species means red+black). The other species I know don't fit. Just I hesitated firstly to tell rubronigra cause it is not known from Peru. But possibly occurs there, too. However, I'm not 100% sure that is this species, maybe it is a very similar, undescribed one. Btw, your specimen is a male (females have normal head) and the species of this genus are quite rare finds !
Concerning the Chrysomelid, the valid name of the genus is Chlamisus.
Cheers,
Thanos
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Post by Borja Gómez on Nov 19, 2012 3:57:43 GMT -8
Hello Thanks Thanos. I would say that about 20-30% of the things I have, are not cited for the locality or country they come from. I think in these zones like tropical forest, the lack of good taxonomic efforts and the high grade of diversity, makes this posible. As you say I'm not too 100% sure of the specific name rubronigra, but like most of the beetles and insect I try to identify I'm like 99% sure that it's this species. And anyways that's the bigger grade of certainty I can reach without a specific analysis of the specimen without the proper material and biography, because we all know that only a visual identification without a genitalia in most cases it's only a guide for the poserior, fine and detailed work, but that is out of my needs for these specimens. So many thanks everyone for your answers. Life is easier now  Regards |
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