Plagiolabra

Hermes, Marcel G., 2007, Contribution to the knowledge of the Neotropical genus Plagiolabra von Schulthess (Hymenoptera, Vespidae, Eumeninae) *, Zootaxa 1583 (1), pp. 15-22 : 20-21

Key to species of Plagiolabra

1- Female vertex cuticle strongly modified, with cephalic foveae filled with dense patches of setae (fig. 8); male vertex cuticle modified as well; male labrum coarsely punctate; punctures on base of scutellum well spaced, with space between punctures greater than its diameter; propodeal valvula fused to the apical lamella, sometimes extending to lateral margins of propodeum to form an obsolete carina; length of T1 1.5X as long as the apical width; mesosoma and metasoma without yellow markings ................................ .................................................................................................................................. P. nigra von Schulthess

1’- Female vertex cuticle less modified, with cephalic foveae filled with sparse setae (fig. 3); male vertex cuticle slightly modified; male labrum without coarse punctures; punctures on base of scutellum regular; propodeal valvula not fused, apical lamella absent and lateral face of propodeum without carina; T1 approximately as long as its apical width; mesosoma and metasoma with yellow markings ....................... ........................................................................................................................................... P. andina Brèthes