Key to Genera of Fedrizziidae

1. Both sexes: distal seta (av1) on palp trochanter pilose (Fig. 4 a); hypostome with seta h1 smooth (Fig. 4 a); exopodal patterning between CxII–III usually spotted, sometimes striped. Female: sternogynial shield coming to an apical knob posteriorly, curving outwards anteriorly (Fig. 3 a). Male: always with separate presternal shield (tetartosternum) bearing setae st1 (Fig. 13 a); base of tritosternum same form as female.. ..................................................................................................................................................................... 2

- Both sexes: distal seta (av1) on palp trochanter barbed, if pilose then shortly so (Fig. 4 b); hypostome with seta h1 barbed or branched (Fig. 4 b); exopodal patterning between CxII-III striped or dark, sclerotised. Female: sternogynial shield rounded posteriorly, curving slightly inwards anteriorly (Fig. 3 b). Male: many species without separate seta-bearing tetartosternum (Fig. 13 c–f, Fig. 13 b an exception), often with presternal processes (Fig. 13 d–f, 14a–f); base of tritosternum broader and shorter than female.......................... ................................................................................................................................................... Neofedrizzia

2. Both sexes: venter with ventrianal shield only .................................. Parafedrizzia buloloensis Womersley

- Both sexes: venter with separate ventral and ventrianal shield (Fig. 15) ....................................... Fedrizzia