CHINESE DREPANINAE 15 



5 Frenulum vestigial, not visible without removal of surrounding scales. Colour- 



pattern as in PI. 3, figs. 320 or 321 . . . . PSEUDALBARA (p. 65) 



- Frenulum well-devloped. Colour-pattern not as in PI. 3, figs. 320 or 321 . . 6 



6 Ground-colour of wings white .......... 7 



- Ground-colour of wings not white . . . . . . . . . 11 



7 Wings with large transparent areas as in PI. 13, fig. 378 . HYALOSPECTRA (p. 136) 



- Wings not as in PI. 13, fig. 378 ......... 8 



8 Transverse lines on upper surface of hind wing lunulate or dentate ... 9 



- Transverse lines on upper surface of hind wings not indented 



THYM1STADOPS1S (p. 124) 



9 Antennae lamellate. Hind tibia with two pairs of well-developed spurs 



AUZATA (p. 130) 



- Antennae not lamellate. Hind tibia with one pair of spurs (Drepana) ; or with two 



pairs of spurs, in which case the outer spur of the proximal pair is vestigial and 



not visible without removal of the surrounding scales (Callicilix) . . . 10 



10 Hind tibia with one pair of spurs ... . . DREPANA (part) (p. 103) 



- Hind tibia with two pairs of spurs ..... CALLICILIX (p. 127) 



11 Hind wing with tail or angulate process at outer angle or anal angle ... 12 



- Hind wing without tail or angulate process at outer angle or anal angle . . 13 



12 Antenna bipectinate. Outer margin of fore wing with process THYMISTIDA (p. 24) 



- Antenna lamellate. Outer margin of fore wing without process . PHALACRA (p. 143) 



13 Highly lustrous scales present on upper surface of wings ; especially along costa, 



outer margin and at distal end of cell .... CALLIDREPANA (p. 113) 



- Upper surface of wings without highly lustrous scales ..... 14 



14 Outer margin of fore wing with process (e.g. PI. 4, fig. 331) . . . . 15 



- Outer margin of fore wing without process ....... 16 



15 Ground-colour of upper surface of fore wing the same as that of hind wing. Distal 



third of hind wing yellowish brown, not paler than rest of wing (e.g. PI. 4, fig. 331) 



PALAEODREPANA (p. 92) 



- Ground-colour of upper surface of fore wing much darker than that of hind wing. 



1 >istal third of hind wing yellowish white, paler than rest of wing (PI. 11, fig. 357) 



DIDYMANA (p. 92) 



16 Base and proximal part of shaft of antennae clothed in highly lustrous scales 



NORDSTROEMIA (part) (p. 69) 



- Antennae without highly lustrous scales . . . . . . . . 17 



17 Ground-colour of upper surface of wings yellow . . . TRIDREPANA (p. m) 



- Ground-colour of upper surface of wings not yellow ...... 18 



18 Postmedial fascia on upper surface of fore wing straight (e.g. PI. 3, fig. 315) . . 19 



- Postmedial fascia on upper surface of fore wing not straight .... 24 



19 Postmedial fascia on upper surface of hind wing arcuate ; dentate or non-dentate . 20 



- Postmedial fascia on upper surface of hind wing straight ; not dentate . . 21 



20 Hind tibia with two pairs of spurs ...... AGNIDRA (p. 29) 



- Hind tibia with one pair of spurs ..... DREPANA (part) (p. 103) 



21 Proximal half of costa of fore wing concave or straight ; strongly convex near apex 



(e.g. PI. 11, fig. 366) CANUCHA (p. 99) 



- Proximal half of costa convex ; not strongly convex near apex .... 22 



22 Antenna uniserrate ...... AGNIDRA (part) (p. 29) 



- Antenna bipectinate or lamellate ......... 23 



23 Subterminal fascia on upper surface of fore and hind wings represented by series of 



dots ; fascia darker than rest of wing ...... ALBARA (p. 16) 



- Subterminal fascia absent or represented on fore and hind wings by markings other 



than dots BET ALBARA (p. 46) 



24 Hind tibia with one pair of spurs ......... 25 



