Mosquito means little fly in Spanish and Portuguese. The word evolved from the original Latin word musca for fly.
Differences between Spanish and Portuguese
Although Portuguese and Spanish are closely related, to the point of having a considerable degree of mutual intelligibility, there are also important differences between them, which can pose difficulties for people acquainted with one of the languages who attempt to learn the other. Both are part of a broader group known as West Iberian Romance, which also includes several other languages or dialects with fewer speakers, all of which are mutually intelligible to some degree.
The most obvious differences are in pronunciation. The written languages are often significantly more intercomprehensible than the spoken languages. Compare, for example, the phrase
Musca (Latin: fly) is one of the minor southern constellations. The constellation was one of twelve constellations created by Petrus Plancius from the observations of Pieter Dirkszoon Keyser and Frederick de Houtman and it first appeared on a 35-cm diameter celestial globe published in 1597 (or 1598) in Amsterdam by Petrus Plancius and Jodocus Hondius. The first depiction of this constellation in a celestial atlas was in Johann Bayer's Uranometria of 1603.
Diptera in the 10th edition of Systema Naturae
Musca Borealis (Latin for northern fly) was a constellation located between the constellations of Aries and Perseus. It was originally called Vespa by Jakob Bartsch in 1624. Before that, it was called Apes (plural of Apis, Latin for bee) by Petrus Plancius when he created it in 1612. It was made up of a small group of stars, located between the constellations of Aries and Perseus.
The renaming by Bartsch may have been intended to avoid confusion with another constellation, created by Plancius in 1598, that was called Apis by Bayer in 1603. Plancius called this earlier constellation Muia (Greek for fly) in 1612, and it had been called Musca (Latin for fly) by Blaeu in 1602, although Bayer was evidently unaware of this.