Cechenena aegrota
Male: Labial palp segment 1 with apical cavity almost closed. Underside of body beige with a slight greenish tone. Underside of abdomen with a series of paired small black spots on segments 2-7. Forewing upperside ground colour yellowish-buff; subbasal and antemedial lines clearly marked; apex with a black spot that continues as a serrate line across Rs4 and M1, then expands into a comma-shaped mark between M1 and M2. Forewing underside beige with a blackish basal area. Hindwing upperside dark brown; median band dirty yellow, extending from costa to tornus without any reduction in width along its length; costa pure yellow along entire length. FWL: 34 mm (average); wingspan 72-76 mm (average = 74 mm).
Female: Similar to the male but wings more rounded, forewing upperside pattern generally less marked and abdomen fatter. FWL: 42 mm (average); wingspan 88-92 mm (average = 90 mm).
Male genitalia: Uncus similar to Rhagastis velata. Gnathos similar to Rhagastis velata. Harpe thick and very short, apically produced as a sharply pointed upcurved hook. Phallus apically rounded and lacking a transverse process; instead it bears a distal field of sharp deciduous spicules and apically there are 5-7 shorter points.
The specimen from Hainan looks like Cechenena aegrota but its DNA barcode clusters with samples of Cechenena chimaera. The specimen from Zhejiang also agrees with Cechenena aegrota in habitus but is markedly disjunct in locality. Both records require to be confirmed.