Word Study
lepidopterous
CIDE DICTIONARY
lepidopterous, a.
Of or pertaining to the Lepidoptera. [1913 Webster]
lepidopterous, a.
See lepidopteral. [PJC]
OXFORD DICTIONARY
lepidopterous, adj. of the order Lepidoptera of insects, with four scale-covered wings often brightly coloured, including butterflies and moths.
Derivative
lepidopteran adj. & n. lepidopterist n.
Etymology
Gk lepis -idos scale + pteron wing
For further exploring for "lepidopterous" in Webster Dictionary Online