Caenomastax Hebard, 1923

Diagnosis. Antennae with thirteen segments in both sexes and devoid of antennal organ; micropterous or brachypterous males. Hind femora with a red cross-band in mid-length. Latero-posterior angles of the first abdominal tergites spiniform and projecting backwards in females. Male cerci straight o conical, unspecialized. Phallic complex: epiphallus and ectophallus well sclerotized, epiphallic disc with flared lateral margins and sclerotized dorsal disc.

Type species: Caenomastax insignis Hebard, 1923 .