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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Long-horned and Leaf Beetles (Chrysomeloidea) » Longhorned Beetles (Cerambycidae) » Cerambycinae » Clytini » Xylotrechus » Willow Borer (Xylotrechus insignis)
Photo#194852
Longhorned Woodboring Beetle - Xylotrechus insignis - male
Copyright © 2008 Alice Cavette

Longhorned Woodboring Beetle - Xylotrechus insignis - Male
Lake Elizabeth, Fremont, Alameda County, California, USA
June 27, 2008
Size: 1 inch
On walkway between stream and lake.
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Contributed by Alice Cavette on 27 June, 2008 - 3:17pm
Last updated 27 June, 2008 - 4:55pm

Another Photo On Web
Rollin Coville shows a "Willow Borer, Xylotrechus insignus" that is identical:
http://covillephotos.com/files/Sierra_Insects/images/IN20D_20050707_9732.jpg
… Alice Cavette, 27 June, 2008 - 4:36pm login or register to post comments

Yes, longhorned beetle.
This is a nice image of a longhorned woodboring beetle in the family Cerambycidae. Might belong to genus Neoclytus, Clytus, or possibly Xylotrechus. Ted MacRae is one of our leading experts on this family, and he should be able to narrow the suspects a bit more. Very nice animal!
… Eric R. Eaton, 27 June, 2008 - 3:46pm login or register to post comments

 
Male Xylotrechus insignus
The male of this species is brown with the three yellow bands, the female is black with an additional median band on the elytra and yellow margins to the pronotum. It breeds in willow. Locally it became quite a pest in a commercial Pussy Willow orchard.
… Dennis Haines, 27 June, 2008 - 4:08pm login or register to post comments

 
Rare?
Rollin Coville shows a "Willow Borer, Xylotrechus insignus" that is identical:
http://covillephotos.com/files/Sierra_Insects/images/IN20D_20050707_9732.jpg

That is the only reference to Xylotrechus insignus on the web. Is it rare? Is it rare to see it in suburbia (Lake Elizabeth, Fremont, CA)?
… Alice Cavette, 27 June, 2008 - 4:37pm login or register to post comments

 
insignis, not insignus
This misspelling may be why people are not finding it on the web.
… Skip Blanchard, 27 June, 2008 - 4:47pm login or register to post comments

 
Thanks
Thanks for correction.
… Alice Cavette, 27 June, 2008 - 5:01pm login or register to post comments

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