Scape length against head width in the worker.
Part of:
Phengsi N, Jaitrong W, Ruangsittichai J, Khachonpisitsak S (2018) A sibling species of
Platythyrea clypeata
Forel, 1911 in southeast Asia (Hymenoptera, Formicidae, Ponerinae). ZooKeys 729: 87-102.
https://doi.org/10.3897/zookeys.729.21378