lepidopterology

noun

Etymology: From Ancient Greek λεπίς (lepís, “scale”) + πτερόν (pterón, “wing”) + -λογία (-logía, “-logy, branch of study”), or, more recently, from translingual Lepidoptera + -ology.

1. The scientific study of butterflies and moths (the Lepidoptera).
2. Lepidoptery, (the hobby of butterfly collecting).