THE HSUI SPECIES GROUP (NEW GROUP)

DIAGNOSIS: Small to medium-sized flies; dark brown to black-brown, with typical white markings of genus; aristal branches long to short; frons dark, almost entirely dull. Male genitalia: Inner paraphysis simple, with apex finely serrate; outer paraphysis simple, lacking large dorsal spines, having only small preapical dorsal hook.

NEARCTIC SPECIES: Amiota hsui Máca and A. hyalou .

COMMENTS: The two species in this group, A. hsui Máca and A. hyalou have very large distributions across North America, among the largest known in the Nearctic fauna.