October 27, 2026
Monday Mystery Answered
On Monday I wrote… Yesterday morning, top Celery Farm Nature Preserve birder Julie McCall saw an unusual-looking hawk over the…
Thank you!
Thank you!
Maybe Arge pectoralis – Birch Sawfly – https://bugguide.net/node/view/70875/bgimage
I think it’s some type of Sawfly larvae. Not a moth or butterfly caterpillar.
Looks a lot like the ones in this Bugguide link. They ID it only to genus, no species.
Hope the link works:
https://bugguide.net/node/view/557675
4 comments
Jim Wright
Thank you!
Jim Wright
Thank you!
julie
Maybe Arge pectoralis – Birch Sawfly – https://bugguide.net/node/view/70875/bgimage
Denise
I think it’s some type of Sawfly larvae. Not a moth or butterfly caterpillar.
Looks a lot like the ones in this Bugguide link. They ID it only to genus, no species.
Hope the link works:
https://bugguide.net/node/view/557675