borer - Hylurgops pinifex

Moved

… v belov, 10 May, 2011 - 11:31am

secondary bark beetle-Hylurgops pinifex

This is positively Hylurgops pinifex. H. rugipennis has a reticulate pronotal surface, more regularly sized punctures, and H. pinifex is the only Hylurgops know to occur in the east.

… Javier Mercado, 6 May, 2011 - 2:17pm

Q: Who is Javier Mercado?

A:
Javier E. Mercado
Department of Bioagricultural Sciences and Pest Management
Colorado State University, Fort Collins, Colorado
M.S. in entomology,
CSU

(Gotta know the qualifications of our "experts.")

Thanks for the help, Javier, but I now have two experts telling me different things. I think I'll pray on it ;-)

Here's a Web page w/images on H. pinifex. Note in earlier comment that UNH checklist does not list pinifex.

… Jim McClarin, 7 May, 2011 - 9:51am

Javier's wondeful website i use regularly...

...is here [BG ref.(1)] --his authorship is rather hard to find there, too...

… v belov, 10 May, 2011 - 11:35am

Thanks, Belov.

On the strength of Javier's Scolytinae site and lack of further response from Laura T. Miller I'll give it to Javier :-)

… Jim McClarin, 11 May, 2011 - 6:45am

Dendroctonus?

At that relatively large size, I'd start by looking at the genus Dendroctonus. No obvious anatomy suggesting something else, either.

… Eric R. Eaton, 9 December, 2005 - 6:01pm

Hylurgops rugipennis

I believe this is Hylurgops rugipennis. The pronotum is "pearshaped" instead of rectangular or quadrate, like it is in Dendroctonus spp. The presence of scale-like hairs on the elytral declivity is another one of the characteristics of Hylurgops, Dendroctonus doesn't have them, they're all fine hairs. Hylurgops rugipennis is about 5 mm long, close to some specimens of Dendroctonus terebrans and D. valens.

… Laura T. Miller, 1 March, 2006 - 1:36pm

Hylurgops rugipennis (Mannerheim, 1843)

We've got a dispute among trained entomologists re the identity, Laura. Quieres revisitarlo?

… Jim McClarin, 7 May, 2011 - 10:43am

My thanks, Laura.

And welcome! It's nice to have your expert help. I presume you are newly registered as I haven't seen comments by you before, although I have not submitted much in line with your primary interest.

I'll move these images to species guide page.

… Jim McClarin, 1 March, 2006 - 3:34pm

Super!

Thanks for the lead, Eric.

Three Dendroctonus species are listed on the New Hampshire checklist at UNH: rufipennis, simplex, & valens. In form they are similar to this specimen judging by Web pix. I think I can eliminate valens, which is more reddish than this one.

… Jim McClarin, 9 December, 2005 - 6:04pm