蟺 is a Chinese hanzi, listed here under the keyword “earthworm”. It is built from 虫 (insects) and 亶 (sincere). It appears as a component in 1 other character in this index.
On KumiJi Glyph Explorer, open the parts search and type “insects” + “sincere”. 蟺 is among the results, together with every other character containing the same shapes.
Open 蟺 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.