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I don't personnaly know M. larvipara, I always have found only M. autumnalis.
Another diffrence is that M. larvipara (like its name implies) is larviparous.
Musca sorbens is found in mediterranean area in Europe (Nikita has placed many pictures in the gallery). Musca sorbens has a typical pattern on scutum (2 broad black vittae forked in front of the suture).