Key to Neotropical psyllid genera associated with Detarieae

Adults

1 Head lacking genal processes (Figs 1, 2). On Hymenaea ............................................ Platycorypha

- Head bearing genal processes (Figs 3–6)................................................................... 2

2 Metatibia lacking genual spine. Forewing rhomboidal or subrectangular; dark brown to almost black (Fig. 7). Vertex subrectangular, with base straight, completely flattened dorsally including area adjacent to median ocellus; separated from genae by transverse suture; genal processes with dorsal surface lying in the same plane as vertex, flattened dorsally, usually irregularly truncate apically (Fig. 3). On Copaifera .......................................................... Colophorina

- Metatibia with conspicuous genual spine. Forewing ovoid to oblong oval, broadly, sometimes irregularly rounded apically; light, sometimes with dark pattern (Figs 8–10). Vertex trapezoidal, with base weakly concave, dorsally with raised lateral ocelli and anteorbital tubercle as well as area adjacent to median ocellus, coronal suture incised; separated from genae by deep transverse incision; genal processes with dorsal surface lying in a different plane to that of vertex, sometimes inclined, convex dorsally, conical, pointed or blunt apically (Figs 4–6)......................................................... 3

3 Forewing long and narrow,> 2.7 times as long as wide (Fig. 8). Dorsal surface of genal processes, in lateral view, at an angle of 80° to that of vertex. Metatibia with 4–5 regularly spaced apical spurs. On Hymenaea ..................... Apsyllopsis

- Forewing shorter and wider, <2.7 times as long as wide (Figs 9, 10). Dorsal surface of genal processes, in lateral view, more or less parallel to that of vertex. Metatibia with 1+3+1 apical spurs................................................ 4

4 Vertex flat on either side of coronal suture; genal processes evenly tapering, pointed, ≥ 0.7 times as long as vertex along midline (Fig. 5). Antennae> 2.7 mm,> 3.4 times as long as head width........................................ Jataiba

- Vertex with prominent ridge on either side of coronal suture; genal processes blunt or subacute, or <0.8 times as long as vertex along mid-line (Fig. 6). Antennae <3.0 mm, <3.4 times as long as head width............................. Mitrapsylla

Last instar immatures

1 Abdomen, apart from circumanal ring, bearing additional pore fields (Figs 11, 12). Living in leaf roll galls.............. 2

- Abdomen lacking additional pore fields (Figs 13–15). Free living............................................... 3

2 Antenna long, about 1.5 times as long as forewing pad. Forewing pad long and narrow,> 3.5 times as long as wide; hindwing pad lacking sectaseta (Fig. 16). Tarsal arolium small, shorter than claws (Fig. 18). Abdomen with 5+5 marginal sectasetae. On Hymenaea .................................................................................. Apsyllopsis

- Antenna short, about as long as forewing pad or shorter. Forewing pad short and broad, <3.0 times as long as wide; hindwing pad bearing one marginal sectaseta (Fig. 17). Tarsal arolium large, longer than claws (Fig. 19). Abdomen with 4+4 marginal or submarginal sectasetae. On Copaifera ........................................................... Colophorina

3 Wing pads and caudal plate conspicuously dark along margin, abdomen flat; anus ventral (Fig. 15). Hindwing pad with one marginal sectaseta. On Hymenaea .............................................................. Platycorypha

- Wing pads and caudal plate lacking dark margin, abdomen inflated, weakly sclerotised; anus terminal (Figs 13, 14). Hindwing pad lacking sectaseta.................................................................................. 4

4 Circumanal ring relatively small; distance from anus to outer circumanal ring about 2.0 times or less than that from there to group of sectasetae (Fig. 13). Pores of circumanal ring very narrow and long (Fig. 20).......................... Jataiba

- Circumanal ring relatively large; distance from anus to outer circumanal ring longer than 2.0 times distance from there to group of sectasetae (Fig. 14). Pores of circumanal ring oval, about twice as long as wide (Fig. 21).................. Mitrapsylla