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Mesonotal setae without regular rows, halter black, marginal scutellar setae arising from tubercles, parafacials at level of antennal bases and antennal grooves without silvery-white tomentum, fore basitarsomere whitish yellow. Then - A.glabra.
A.ordinata with mesonotal setulae in regular rows and black halteres.
A.niduscula with halteres yellowish.