蝶 is a Japanese kanji written with 15 strokes, listed here under the keyword “butterfly”. It is built from 枼 (tarzan) and 虫 (insect). In Remembering the Kanji by James W. Heisig it is frame 560.
On KumiJi Glyph Explorer, open the parts search and type “tarzan” + “insect”. 蝶 is among the results, together with every other character containing the same shapes.
Open 蝶 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.