Musca
One of the 88 IAU constellations. The constellation was invented by Dutch sailors in the 1590s, perhaps a navigation aid.
Etymology and History
Origin of Constellation
The Southern Cross, today's constellation Crux, had been used for almost a century by the time of the invention of Musca. A kite-like pattern of stars, however, is not unique in the sky, and sailors had occasionally misnavigated with the asterism of the False Cross (a pattern of stars in Vela). It is somehow striking that the same Dutch sailors who enlarged the body of The Ship, Argo, so that it contains the False Cross, also created this extra constellation next to the real cross (Crux). They do not give any explanation for their inventions but the practical purpose seem obvious as their Hydrus also curled towards the south pole.
However, the image of the fly is much closer to Chamaeleon than to any other constellation. As the creators also depicted the hunting scene of Dorado and Volans, they perhaps also considered Musca the prey of the Chamaeleon. This way, the whole group might have served navigational purpose - or star hopping/ recognition purposes for the sake of navigation.