31471916 and 31526256 are Tropidia (syrphid)
32265247 is a dolichopodid
31926137 is a Helophilus (syrphid)
31566042, 32022216, and 32235489 are Villa (bombyliid)
31565899 is an Exoprosopa (bombyliid)
31565820 and 32121792 are Tabanus sp.
31996169 and 31526303 are Asilids
31885383 and 31526290 are tipulids
31461922 is a Rhagionid