Key to genera and species groups (males only) of Iteaphilidae

1 Postpedicel with broad base, with apical half tapered; stylus comprises two articles, shorter or longer than half length of postpedicel with apical sensillum greatly reduced in length; scutellum with 2–3 pairs of apical setae; male hind femur usually modified; wing with basal costa seta present; cell dm produced apically (Fig. 10); male terminalia with epandrial lobe ventral to distinctly digitiform surstylus........................................................ Paraiteaphila gen. nov.

- Postpedicel elongate and nearly parallel-sided; stylus usually short and quadrate, one-articled with distinct apical sensillum; scutellum with more than 3 pairs of apical setae; male legs unmodified; basal costal seta absent; cell dm usually truncate apically (Figs 7, 8, 11); male terminalia without epandrial lobe; surstylus hook-like.......... Iteaphila ................ 2

2 Epandrial bridge broad, at least one-quarter length of epandrium (Figs 21–24)................. I. bulbosa species group

- Epandrial bridge narrow, less than one-quarter length of epandrium.............................................. 3

3 Phallus elongate, extending beyond and around epandrium (Figs 7, 36)...................... I. nitidula species group

- Phallus shorter, extending little beyond epandrium........................................................... 4

4 Phallic guide with jagged margin; postgonite usually extended to dorsal margin of epandrium (Figs 37, 38, 41–48, 53–58).................................................................................... I. nupta species group

- Phallic guide without jagged margin; postgonite not extended to dorsal margin of epandrium......................... 5

5 Apex of phallus greatly expanded into funnel or cup-shape (Figs 9, 77, 78)..................... I. stentor species group

- Apex of phallus not expanded........................................................................... 6

6 Hypoproct without paired processes................................................. I. triangula species group

- Hypoproct with paired processes......................................................................... 7

7 Phallus with recurved apex; phallic guide without spine-like microtrichia; shaft of phallus without internal skeleton pattern (Figs 59–61, 67–70, 75)............................................................ I. oedalina species group

- Phallus with straight or gently curved apex; phallic guide often with spine-like microtrichia; shaft of phallus often with internal skeleton pattern (Figs 29–32)...................................................... I. macquarti species group