1.         Three pairs of prolegs dorsally, laterally, and ventrally on each of the first
            even abdominal segments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Tabanus

            Four pairs of prolegs, including an additional ventrolateral pair, on the first
            seven abdominal segments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.         Body surface, except respiratory siphon completely clothed with a dense
            covering of short pubescence. . . . . . . . . . . . . Chlorotabans crepuscularis

            Pubescence restricted to anterior or posterior margin or posterior border of
            prolegs of one or more segments. . . . . . . . . . . . . . . . . . . . . Chrysops sp.       

[Home]   

beetlebannerbeetlebannerbeetlebannerbeetlebannerbeetlebannerbeetlebannerbeetlebanner
Flies (Diptera) of Ohio

Key to Tabanidae Nymphs Genera

From Pechuman & Teskey, 1981