Cerozodus, Bigot, 1857

Identification key to Cerozodus View in CoL species (males)

1. Postpedicel discoidal or rounded ( Figs 2A–B View FIGURE 2 , 6A–B View FIGURE 6 , 8A–B View FIGURE 8 ); stylus about three times the postpedicel length; lobe of stylus comprising approximately 1/3 to ¼ the length of the second article of stylus, short and pronounced ventrally............. 2

1’. Postpedicel conical ( Figs 14A–B View FIGURE 14 , 18A–B View FIGURE 18 ); stylus about two times the postpedicel length; lobe of stylus approximately half the length of the second article of stylus, long and less pronounced ventrally......................................... 3

2. Hypandrium with tongue-like projection at mid-posterior margin bifid ( Fig. 3D View FIGURE 3 ); gonocoxite lacking a very short conic projection laterally, sub-apically ( Fig. 4B–C View FIGURE 4 ); gonocoxite in lateral view without indentation ventrally, sub-apically ( Fig. 4D– E View FIGURE 4 ) and strongly inwardly curved apically ( Fig. 4B–C View FIGURE 4 )............................................................................................. Cerozodus brachylobus Vieira, Rafael & Limeira-de-Oliveira, 2013 ( Maranhão) .

2’. Hypandrium with tongue-like projection at mid-posterior margin rounded, not bifid ( Fig. 9D View FIGURE 9 ); gonocoxite with a very short conic projection laterally, sub-apically ( Fig. 10B–C View FIGURE 10 ); gonocoxite in lateral view with a U-shaped indentation ventrally, subapically ( Fig. 10D–E View FIGURE 10 ) and slightly inwardly curved apically ( Fig. 10B–C View FIGURE 10 )............................................................ Cerozodus nodicornis ( Wiedemann, 1828) View in CoL ( Mato Grosso, Mato Grosso do Sul, Goiás and São Paulo).

3. External margin of epandrial arms abruptly inwardly curved distally, forming a slight concavity sub-apically ( Figs 15B–C, 15G– H View FIGURE 15 ); hypandrium with tongue-like projection at posterior margin bifid ( Fig. 15D View FIGURE 15 ); gonocoxite with a very short conic projection on external margin sub-apically ( Fig. 16B–C View FIGURE 16 ); subepandrial sclerite flat, without a pair of small vesicle-like protuberances ventrally ( Fig. 16H–I View FIGURE 16 )........................................ Cerozodus ayalai View in CoL sp. nov. ( Maranhão and Tocantins).

3’. External margin of epandrial arms smoothly inwardly curved distally ( Figs 19B–C, 19G–H View FIGURE 19 ); hypandrium with tongue-like projection at posterior margin rounded, not bifid ( Fig. 19D View FIGURE 19 ); gonocoxite with a rounded indentation sub-apically connecting internal and external margins ( Fig. 20B–C View FIGURE 20 ); subepandrial sclerite with a pair of small vesicle-like protuberances ventrally ( Fig. 20H–I View FIGURE 20 )...................................... Cerozodus platylobus View in CoL sp. nov. ( Mato Grosso and Mato Grosso do Sul).