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Hi,

this kind of Muscidae was very numerous in pan trap material. Three dark spots on wings are very conspicuous. Collected with yellow pan trap in Aguas Celientes, Mandorpampa 27.-28.7.2014 by M.-D. Mitroiu

Jari

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I think Polietina. Check against diagnosis in Nihei and de Carvalho 2009 (Zootaxa 1976:1-24) quoted below. The diagnosis is relative to other Muscini. I don't know whether it distinguishes the genus from all other Muscidae.

If that is wrong, Cyrtoneuropsis also has those wing spots, as do some Morellia that can be ruled out by the straight vein M.

Polietina Schnabl & Dziedzicki, 1911

Diagnosis. Colouration yellowish-brown to blackish-brown with silver pruinosity; wing with maculae or infuscate on apex of Sc and R1, on apex of R2+3, and on r-m and dm-cu crossveins. Female with proclinate fronto-orbital seta; parafrons weakly setulose on upper half; interfrontal seta present. Dorsocentrals 2+3-4. Postsutural intraalars 2; intrapostalar absent. Notopleurals 3 (one additional median, shorter than the usual two setae). Prosternum setulose. Katepisternals 1+2. Meron setulose. Postalar wall setulose. Anterior suprasquamal ridge usually setulose. Wing with the apical portion of stem-vein usually setulose dorsally and ventrally; R1 setulose dorsally; Rs node and R4+5 setulose dorsally and ventrally; M setulose ventrally between r-m and dm-cu crossveins; M straight, subparallel to R4+5. Lower calypter glossiform. Subcostal sclerite setulose ventrally. Calcar strong. Mid tibia with a strong submedian seta on ventral to posteroventral surface.

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Thank You John ! I contacted Silvio Nihei for more information :)