蟏 is a simplified Chinese hanzi, listed here under the keyword “a kind of spider with long legs”. It is built from 虫 (insects) and 萧 (common artemisia).
On KumiJi Glyph Explorer, open the parts search and type “insects” + “common artemisia”. 蟏 is among the results, together with every other character containing the same shapes.
Open 蟏 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.