Syscia Roger 1861

Yamane, Seiki & Mizuno, Riou, 2024, Three new species of the ant genera Ooceraea and Syscia (Hymenoptera: Formicidae: Dorylinae) from Sabah, Borneo, Asian Myrmecology (e 017004) 17, pp. 1-14 : 5

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).