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Zhu
Member Demonax
China
79 Posts |
 Posted - 29/05/2008 : 03:27:17
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Dear Dr.
This is a cerambycid from Papua New Guinea log, Can you help identify? |
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Francesco
Forum Admin
Luxembourg
9454 Posts |
Posted - 24/06/2008 : 08:08:10
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| Dear colleague, this beetle is a representative of the genus Trigonoptera (Lamiinae Tmesisternini), maybe T. guttulata (Gestro, 1876) or T. olivacea Aurivillius, 1908. We have two beetles of such genus in the gallery but not yours. I'll look for further information. Regards |
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Zhu
Member Demonax
China
79 Posts |
Posted - 24/06/2008 : 08:49:02
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| Longicornia lovers all know how diffi. it is to identify species from ponds of thousands of types,even images are available, when you have no idea its tribe and genus.Only experts who grasp the core of diversity can locate.I really appreciate the name you've given. However,how big is the species of Trigonoptera? My specimen is only 7-8 mm long. And the sharp tail is not elytra but the hind wing. Maybe new genera within this tribe? The specimen temperarily is not at hand. Considering it is from the Papua NEW Guinea, everything may happen, right? |
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Francesco
Forum Admin
Luxembourg
9454 Posts |
Posted - 24/06/2008 : 21:17:26
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Dear colleague, I am sorry for my delayed reply but I moved abroad since end of April and I lost a lot of time in order to have the Web-connection.
I get two Trigonoptera-species in my collection and both are ~1 cm long. Your specimen might be identified through the papers by BREUNING (1945. Études sur les Lamiaires, 14 Tribu: Tmesisternini Thomson - Novitates Entomologicae 15) and GRESSITT (1984. Systematics and biogeography of the longicorn beetle tribe Tmesisternini - Pac. Ins. Monogr. 41).
I get both such books at home, but not with me now. I hope to recuperate them in the near future and so identify your specimen. |
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Zhu
Member Demonax
China
79 Posts |
Posted - 25/06/2008 : 10:01:56
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| Now I am fully convinced that the specimen belongs to the genus Trigonoptera and thank you for indicating the references also which I have never known before. what I think is usefull is to edit a catalogue of specimens of east hemisphere like hovore did for the west world. Best Regards |
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Francesco
Forum Admin
Luxembourg
9454 Posts |
Posted - 25/06/2008 : 13:25:06
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Cool, this catalogue is a very excellent idea!
If you want write it, you need to know the catalogue by BIGGER M. & SCHOFIELD P. (1983, Checklist of Cerambycidae, Curculionidae, Attelabidae, Scolytidae and Platypodidae of Melanesia. Centre for Overseas Pest Research, London, 62 pp.), which has a part about the Cerambycoidea from Moluccas, New Guinea, Solomons, Vanuatu, Fiji and Samoa.
It is based on the collections of the British Museum and also has partially outdated, misspelled, missing or double data but it is the most complete catalogue about this fauna I known.
Unfortunately, I get this book too, but not here… |
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Zhu
Member Demonax
China
79 Posts |
Posted - 26/06/2008 : 03:14:40
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| My god. I mean expert like you or some guys in Natural History Museums do it. I don't even know catalogue of Melanesia also. Enjoy your trip. |
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Francesco
Forum Admin
Luxembourg
9454 Posts |
Posted - 04/08/2008 : 06:14:21
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Dear Colleague, I have finally managed to recuperate my keys to Tmesisternini and to identify your beetle. I also have improved your picture also eliminating the hind wings.
As I have previously anticipated, your cerambycid is a male of Trigonoptera guttulata (Gestro, 1876).
Gressitt (1984) gives 10-16 mm as body size and records this species from Irian Jaya, and Papua. A subspecies (T. g. hannoveriana Breuning, 1973) is located in New Hannover (Bismark Is.) |
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Zhu
Member Demonax
China
79 Posts |
Posted - 04/08/2008 : 09:35:06
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| Thanks so much,the size of the specimen should be within the recorded range as I just took a image and let the interceptor take it away. It is amazing that the image become more clear. I guess you make it by photoshop, right? thanks again |
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PNG longicornia id: Trigonoptera guttulata
