noun, genitive Mus·cae [muhs-ee] /ˈmʌs i/. Astronomy.
Origin of Musca
Examples from the Web for musca
A fly (Musca domestica) lit on the pane and the pseudoscorpion caught its legs and clung while the fly crawled about.
At the banquet of Julia's beauty, no guest, be sure, is considered a musca.'The Last Days of Pompeii|Edward George Bulwer-Lytton
We have already seen that Musca domestica breeds in almost any fermenting organic material.
But I must make an exception in favour of the Musca Domestica, the common house-fly.Savage Island|Basil C. Thomson
The experiments with Musca domestica were the most detailed.