Mesembrinella anomala species-group

Recognition. The M. anomala group includes two species, M. andina and M. anomala . Both are medium-sized, blue-black flies (9–11 mm in length), with row of postocular setae not reaching gena, discal scutellar setae absent and T5 elongate, 1.5–2 times length of T 4 in male. Male with surstylus broad and cercus sinuous (Figs 99–100) (see Wolff et al. 2014: figs 22–23); phallus distinctive; epiphallus long and slender ( M. anomala, Figs 189–190) or short and slender ( M. andina) (see Wolff et al. 2014: figs 20–21).