Key for the identification of species of Microphotina (males only)

1. Left phallomere: afa large, hook-like (Fig. 7B) ................................................................................ 2

– Left phallomere: afa strongly reduced, shape variable (Fig. 7C–E) ................................................. 3

2. Ventral phallomere bearing elongated patch of setae ventrally (Fig. 7F) ( Microphotina s. str.) ........ ............................................................................................................. M. vitripennis Saussure, 1872

– Ventral phallomere lacking patch of setae ..................................................... Chromatophotina spp.

3. Ventral phallomere: bl narrow and elongated (Fig. 5B) ( Microphotina, in part) ............................. 4

– Ventral phallomere: bl broad and short (Fig. 7G) ..................................................................Genus A

4. Wings with a subopaque, yellowish green region apically .............. M. viridescens (Chopard, 1912)

– Wings fully hyaline, unpigmented .................................................................................................... 5

5. Left phallomere: paa hammerhead-like (Figs 5B, 7H) ..................................................................... 6

– Left phallomere: paa simple ............................................................................ M. viridula Roy, 2019

6. Left phallomere: paa margins smooth (Fig. 7H), afa unguiform (Fig. 7D) ........................................ ........................................................................ M. panguanensis Schwarz, Ehrmann & Stiewe, 2020

– Left phallomere: paa margins irregular (Fig. 5B), afa blunt (Fig. 7C) ............. M. cristalino sp. nov.