This is Chase071.
Types 1565 agreement not to scratch
Motifs K0263 agreement not to scratch
H1184 task: cutting down tree without scratching for stinging insects
Harris notes the importance of the storyteller acting it out.
Gerber has a Woloff tale with monkey scratching his old war wounds
Both Flowers and Dasent have an Anansi version
Baer: "All the evidence points to an African source for this Afro-American version"
She does not mention the weirdly botched version in Owen.