| Thorax black with pale gray pollinosity, except mesoscutum glossy black with posterior portion pollinose. |
| Males of all three species have very similar microtrichosity pattern of mesoscutum which otherwise helps to associate males with females even if not taken in copula. |
| However, the mesoscutum in the new species is entirely microtrichose but with three lustrous stripes below lines of setae in Rhamphomyia sp. |
| Notaulus substituted by a short tubercle or wrinkle somewhat distad of anterolateral margin of mesoscutum. |
