Insects and Spiders - invasive

Asian Longhorned Beetle (Anoplophora glabripennis) on Aug 8, 2021

Submitter does not have a specimen
EDRR Status: No Response/Action Required

Description of specimen

On Janney Lane when you pass street number 95, there is a SLOW sign on the right side. Directly opposite there is a huge pine tree covered in holes. I think they are from the Asian long-horned beetle.


Dear Aaron, good news is that these are not exit holes of the invasive Asian longhorned beetle, but, very likely, depending on the size, which is difficult to judge from your picture, either the native Mountain pine beetle, Dendroctonus ponderosae. Their exit holes should be in the 1.5 to 3.5mm range. In the image, some of the needles look yellowed. If it is a stressed tree, and considering it doesn’t show signs of pitching out through the holes- it may be done for. If the holes are larger, we have the sawyer beetles in genus Monochamus, but there could be other species involved. Thank you, Helmuth Rogg

Helmuth Rogg
Aug. 9, 2021, 1:04 p.m.