The plural of asellus; multiple woodlice or isopod crustaceans of the genus Asellus.
From Latin 'asellus' (woodlouse, a small isopod crustacean). The word itself may derive from 'asina' (donkey) in a diminutive form, possibly comparing the creature to a small animal.
These little 'aselli' are found in freshwater systems worldwide, and they're super important because they help break down dead stuff at the bottom of streams and lakes!
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