It’s funny how life works out sometimes. Back in the day, tarsal formula was THE way to classify aleocharines. It’s a nice idea, very numerical and exacting. But, we now know, and this stinging fact is becoming more and more apparent with each additional study, that tarsal formula is super homoplastic and usage needs a bag, not a pinch of salt when considering.
Another addition to the aleocharine tarsal formula collage: 3-4-5!