Where does “Loxosceles” come from?

Loxosceles (English) comes from Ancient Greek λοξός, from Proto-Indo-European lewg- — to bend.

Ancestry of “Loxosceles”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	λοξός	Not straight: slanting, crosswise, oblique; To...
2	Proto-Indo-European	lewg-	to bend