parasitatio
From LSJ
ἐξ ὀνύχων λέοντα τεκμαίρεσθαι → judge by the claws, judge by a slight but characteristic mark, small traits give the clue to the character of a person, deduce something from a small indication, identify a lion from its claws
Latin > English (Lewis & Short)
părăsītātĭo: ōnis, f. id.,
I a playing the parasite, sponging, Plaut. Am. 1, 3, 23.
