Longicorn from Guinea: Sternotomis pulchra

Subject: Unidentified Bug
Location: Equatorial Guinea
June 2, 2014 7:20 am
I found this beautiful creatures last week near the rainforest in Equatorial Guinea West Africa and would love to know what they are.  can you help identify this beautiful colored bug about 3cm in length found in may in the rainforest.
The Bug was about 2cm in length.
There were several spiders the largest ones body was about 8cm
The other which im thinking is a moth was about 5cm
thanks for any help
Signature: susan caddur

Longicorn is Sternotomis pulchra

Dear Susan,
This Longicorn Beetle in the family Cerambycidae is just about the most garishly gorgeous beetle image we have ever received.  Longicorns are also called Capricorn Beetles or Longhorned Borer Beetles and they have larvae that bore in the wood of trees and shrubs and most species are very host specific, feeding on only one or two species of trees.  We quickly located a matching image on SuperStock for your Longicorn, though the image is not nearly as beautiful as the image you have provided, and sadly, it is not identified to the species level.  Many years ago, our dear Swiss friend Monika gifted us with a beautiful coffee table book on beetles called Living Jewels by Poul Beckmann and we found what appears to be your beetle on Plate 24 where it is identified as
Sternotomis pulchra picta from Cameroon.  There is now an online gallery from Living Jewels where you can view that image.  Sternotomis pulchra is also pictured on the Worldwide Cerambycidae Photo Gallery, where its range is listed as:  “Senegal, Sierra Leone, Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon, Central Africa, Zaire, Sudan, Congo, Gabon, Uganda, Angola” but not Guinea, though interestingly, Senegal, Sierra Leone, Liberia and the Ivory Coast all border Guinea, so we believe that range is probably incomplete.  NYPL Digital Collections has a reproduction of a vintage Seguy print with what also appears to be your beetle identified as Sternotomis imperialis from Guinée.  According to Wikipedia which we rarely cite, the two species are synonyms and the host is Liberian Coffee.  We will attempt to provide you with information on your other images when time permits.

Thank you so much for the information and yes it is a little ” bold” in its colouring  🙂

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