PS
*pVl(y)- - kind of insect, louse
(SED No. 175)
Clearly related is the verbal root *ply ‘to delouse’ widely attested throughout Semitic.
Cf. Tna. ˁafäl ‘insects or fleas which live in grass’ (TED 1949). One wonders whether it could be directly compared to Akk. uplu (< *ˁupl-)?