Syscia Roger 1861

Genus Syscia Roger 1861 Diagnosis (worker). With characteristics shared by doryline genera (see Bolton, 1990a, b). Parafrontal ridge more or less developed. Eye reduced, or more frequently absent. Antenna with 7 or 9 flagellomeres (9 or 11 antennomeres). Pronotum generally not clearly divided into anterior slope and dorsum by transverse carina. Pronoto-mesopleural suture present as deep cut. Tarsal clows simple. Hind-basitarsus smoothly widening distally. Constriction absent anteriorly on abdominal segments V and VI (gastral segments II and III). In profile view abdominal tergite IV anteriorly folding over sternite to varying extent. Pygidium armed with spine-like setae (Borowiec 2016; present study).