Key to genera of Selenomorphini Evans

(based on Dai & Dietrich 2015).

1. Head with transition from crown to face distinctly angulate in profile (Dai & Dietrich 2015: 287, fig. 1B)............... 2

- Head with transition from crown to face rounded in profile, without distinct margin (Figs 2, 84, 94).................... 3

2. Ocelli on anterior margin of head at crown-face transition; face shagreen ventrally and transversely striate dorsally; male clypeus flat, narrower at base than at apex (Evans 1974: 167, figs 1A, B, D) (New Caledonia)........... Selenomorphus Evans

- Ocelli on face well below crown-face transition; face coarsely punctate, without transverse striations; male clypeus strongly convex, wider basally than at apex (Dai & Dietrich 2015: 287, fig. 1E) (South America)........ Linnavuoria Dai & Dietrich

3. Lorum and clypeus not sexually dimorphic (Figs 3, 16) (South America)..................... Parapachyopsis gen. nov.

- Lorum and clypeus sexually dimorphic (Figs 25, 38, 95, 107).................................................. 4

4. Forewing without setae (Figs 94, 106); first tarsomere with rows of simple (non-cucullate) setae (Fig. 98); abdominal sternite II of male without elongated internal apodemes; AD row of metatibia with intercalary setae between macrosetae (Central and South America)......................................................................... Scaroidana Osborn

- Forewing with conspicuous erect setae (Figs 23, 64) or small setae on clavus and bordering veins on corium (Figs 83, 84); first tarsomere with rows of cucullate setae (Fig. 28); abdominal sternite II of male with elongated internal apodemes (Figs 29, 86); AD row of metatibia without intercalary setae between macrosetae.............................................. 5

5. Face, pronotum, mesonotum and forewing with many erect setae (Figs 23 −25); frons with transverse striae or transverse ir- regular striae; connective with stem widening toward the apex (Figs 32, 51, 70) (North, Central and South America).............................................................................................. Pachyopsis Uhler

- Face, pronotum and mesonotum without setae, forewing with small setae on clavus and bordering veins on corium (Figs 83 −85); frons strongly rugose; connective with stem not widening toward the apex (Fig. 89) (South America)................................................................................................. Uhleriana gen. nov.