Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Calendar
Upcoming Events

Information, insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa


TaxonomyBrowseInfoImagesLinksBooksData
Photo#1796061
two-barked pine beetle tunnels - Pityogenes

two-barked pine beetle tunnels - Pityogenes
Milton, Norfolk County, Massachusetts, USA
March 3, 2020
Fallen limb in moist woods, Unquity Bottom, Blue Hills Reservation. ID based on photo and account in Eiseman and Charney, 2010. Larger image.

Moved
Moved from Two-toothed Pine Beetle.

Highly doubtful that this is bidentatus. That species is quite uncommon, and has a very limited, spotty distribution. I would think it's more likely the common and widespread native species P. hopkinsi. Without an adult from the gallery, I wouldn't just assume a particular species from a gallery image.

I've not seen the figure in Eiseman and Charney, but I would certainly question that one as well without an adult.

 
I just found the image
from Eiseman and Charney in the Amazon preview. There is no way to be certain that gallery is bidentatus. The branch is clearly old, so they certainly didn't get adults from the gallery. I would guess that is hopkinsi. Interesting how they so authoritatively state that it's from bidentatus, when there's really no possible way to know for sure.

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.