English Dictionary

microtomentum

noun

(entomology) A very fine pubescence that appears as a color pattern except under high magnification.

The microtomentum on the leaf surface provides protection against water loss.

意味（1）

(entomology) A very fine pubescence that appears as a color pattern except under high magnification.

However, you can still separate these genera from Lucilia because the thorax of each genus (Cynomya and Cyanus) is covered with whitish microtomentum while it is not in Lucilia.