…to the quiz.
1. Myrmica fracticornis undescribed species
2. Tetramorium “sp. E.” (formerly, T. caespitum)
3. Lasius neoniger
4. Tapinoma sessile
5. Myrmecina americana
6. Pheidole pilifera
Most of these were straightforward, but the Myrmica and the Lasius required as much luck as skill to pick correctly given what was visible in the photographs. The Lasius is indeed covered with the fine hairs that distinguish L. neoniger from L. alienus, but these are nearly impossible to see against the white backdrop.
Identifying Myrmica to species requires examining the shape of the base of the antennae at high magnification, which was not possible in the small photo posted. I am impressed that some of you picked it anyway. Here’s the view that nails it:
Should I do more of these? What do you think?