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Post by takahe on May 1, 2011 19:57:55 GMT -8
This one is from Fond du Lac Wisconsin in 2008. It's about a half an inch long, and the thorax is reddish.
Bradleigh
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Post by thanos on May 1, 2011 21:37:19 GMT -8
It is a Callidiini. I think a geographical colour variation of Phymatodes testaceus (and your specimen is a male). It has worldwide distribution,occuring in Europe,Japan,etc,and has been introduced in USA.
Thanos
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Post by prillbug2 on May 2, 2011 19:19:38 GMT -8
wrong. There are pronotal calli which makes it Phymatondes testaceous. Get a copy of Yanega's book at Bioquip. It will help you with identification.
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Post by thanos on May 2, 2011 22:43:06 GMT -8
What do you say ? You even spell wrongly the latin names..Check better the photo please.The pronotum has exactly the shape and patterns of P.testaceus.Also,the light brown colour that the femurs have close to their base..,as well the light brown colour of the 2/3 of the length of the tibias..,are a good key..and unique for this colour variation of P.testaceus in this area..Noone other similar species has this leg colouration in the area..Also,check how long is the first metatarsomeres especially of the hind legs..! In noone other species in the area this is so long.
Btw,you didn't tell us your opinion about which species it is.
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Post by prillbug2 on May 3, 2011 5:40:55 GMT -8
Excuse me for mistyping. But look at the pronotum.
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Post by thanos on May 3, 2011 6:55:13 GMT -8
I examined it more than carefully and I'd say I'm sure that is P.testaceus. I attach a good,very clear photo of P.testaceus of Stanislav Krejcik. Look at the 3 black 'spots' on the pronotum..They are identical to those of takahe's specimen. Maybe you can see this better if takahe could post a more clear and light photo.
These 3 black 'spots' on the pronotum are not present in other colour variations of this species.
Thanos
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Post by prillbug2 on May 3, 2011 13:49:15 GMT -8
Fine, then he has two possibilities. I'd rather see that he has two choices, as opposed to one choice, in which that one choice might be wroing. The best thing for him to do would be to go to a university library, look for a copy of Linsley and Gressitt's The Cerambycdae of North America part and use the keys.
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Post by prillbug2 on May 3, 2011 13:57:43 GMT -8
I checked the key. The femora are clavate. So, I give this to you. It just simply proves that Cerambycidae are not very easy to identify from photographs, since more than one opinion can be given.
Jeff Prill
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