Oretinae Inoue, 1962

Diagnosis. The adults of Oretinae are distinguished from those of Drepaninae by the absence of a functional proboscis in both sexes and a frenulum in the male. The larvae can be recoginzed by the lack of a supracoxal vesicle, possibly glandular, on each side of the prothorax (Minet 1985), and the numerous secondary setae (Holloway 1998). Wu et al. (2010) also listed other morphological differences: in the adults, the labial palpi are short in Oretinae, but long in Drepaninae; the hind tibia bears only one pair of spurs in Oretinae, but two pairs in Drepaninae; the larvae of Oretinae have the tergum of the metathorax extended and with a spinose process, and the fourth abdominal segment bears one pair of processes, whereas those processes are absent in Drepaninae . In addition, Drepaninae are dominant in the Indo-Australian tropics, and Oretinae are dominant in Africa and Oriental Region.