Have been finding these dudes walking around in my backyard, mostly near a garden with some flat stones around the border (Eastern PA). Haven’t been able to find where a colony entrance or gravesite is but have found a consistent supply of workers foraging in and around some springtime flowers.
I haven’t seen many, if any, of them in the past couple years so figured I’d throw this into the mix.
Workers are definitely monomorphic, haven’t seen much variation in size other than what you’d expect out of non major Camp. Pennsylvanicus.
Size is roughly that of an index fingernail, couldn’t get an accurate measurement of an alive worker.
Definitely appear to be nested somewhere in between or under the shelves of flat rocks in a well watered garden.
I’m thinking either Novomessor, Myrmica, or Aphenogaster. With their appearances being so similar though, I’m unsure which exactly they are. In two cases the species is likely invasive (1 being naturalized) to my area, I will be attempting to find the queen(s) to take pictures to further investigate.
