Lepidoptera: scale-winged: an order of insects with spirally coiled haustellate mouth structures; head free; thorax agglutinate; transformations complete four scale-covered wings.
Lepidopteric acid: a green pigment obtained from the wing scales of Lepidoptera; a derivative of uric acid: see Lepidotic acid.
Lepidopteron: a butterfly or moth: one of the Lepidoptera.
Lepidotic: set with minute scales.
Lepidotic acid: a yellow pigment obtained from certain butterfly scales a derivative of uric acid: see Lepidopteric acid.
Lepis: a scale.
Leprous: with loose, irregular scales.
Leptiform: = compodeiform; q.v.
Leptos: small, fine.
Lethargic: torpid or inactive.