Leptus \Lep"tus\ (l[e^]p"t[u^]s), n. [NL., from Gr. lepto`s thin, small.]

(Zo["o]l.) The six-legged young, or larva, of certain mites; -- sometimes used as a generic name. See Harvest mite, under Harvest.

Source: Webster's Revised Unabridged Dictionary (1913)