Where does “Eubrachyura” come from?

Eubrachyura (Translingual) comes from Translingual eu-, from Ancient Greek εὖ, from Ancient Greek ἐΰς, from Proto-Hellenic ehu-, from Proto-Indo-European h₁su-, from Proto-Indo-European h₁wes- — good; to be cheerful, happy; to eat, to feast.

Eubrachyura (Translingual): section

Definitions

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Ancestry of “Eubrachyura”, step by step

Step	Language	Word	Meaning
1	Translingual	eu-	Used to form taxonomic names corresponding to...
2	Ancient Greek	εὖ	well
3	Ancient Greek	ἐΰς	good, brave, noble
4	Proto-Hellenic	ehu-	good
5	Proto-Indo-European	h₁su-	good
6	Proto-Indo-European	h₁wes-	good; to be cheerful, happy; to eat, to feast

Every word from Proto-Indo-European h₁wes- →Every word from Proto-Indo-European h₁su- →Every word from Proto-Hellenic ehu- →