Crossword clue: an entomologist who specializes in the collection and study of butterflies and moths

lepidopterist, lepidopterologist.

The most common answer is lepidopterist (13 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

lepidopterist 13 letters wn-def

an entomologist who specializes in the collection and study of butterflies and moths

lepidopterologist 17 letters wn-def

an entomologist who specializes in the collection and study of butterflies and moths