The Animal Parasites of Man by Fantham, Braun, Stephens, and Theobald

2. Last two joints of front and middle tarsi

with sharply defined clove brown or black tips 3. Last two joints of front and middle tarsi without sharply defined clove brown or black tips (front and middle tarsi either entirely pale or, at most, two joints of front tarsi faintly brownish at the tips), and last joint and distal half of penultimate joint of middle tarsi light brown, never so dark as to form a sharp contrast with the remaining joints _pallidipes_, Austen.