Microphorella acroptera lineage

This lineage includes the following nine species: M. acroptera Melander, M. bifida sp. nov., M. convoluta sp. nov., M. paracroptera sp. nov., M. serpentina sp. nov., M. sinuosa sp. nov., M. subacroptera sp. nov., M. triangulata sp. nov. and M. tubifera Melander. Males of these species possess a cylindrical, clavate or rounded tubercle on the hind trochanter, which bears a spine-like seta (Figs 8, 9, 18, 21, 23, 24, 48, 66), and also share a uniquely structured phallus, which is convoluted and tubular in the basal (internal) portion, inflated in the middle portion, and narrowed and tubular in the apical portion (Figs 13–15, 26, 27, 29, 30, 36, 37, 39, 40, 42, 44, 45, 53, 68). The distinct phallic structure is considered to be a synapomorphy of the lineage.