Akkadian

ḫarsapnu - (kind of worms or larvae) (CAD Ḫ 115, AHw. 328)

(Var. ḫarasapnu, ḫarsapanu). The word occurs in Standard Babylonian lexical lists only.

PS
*ḥarSap- - 'young of animals, larva' (SED II No. 104)
Not fully reliable both semantically and phonetically (neither Akk. s vs. Arb. š nor Akk. ḥ vs. Arb. ḫ are regular though none of these phonetic developments is without precedents).