Rhotana, Walker. A, 1857

Zelazny, B. & Webb, M. D., 2011, 3071, Zootaxa 3071, pp. 1-307 : 107

Key to the species of Rhotana from China, Taiwan and Japan

1. Anterior apical cross-veins of forewings accompanied by yellowish stripes which are lined at the border by dark infuscation (e.g. Fig. 196f), no prominent dark marks near hindmargin distad of clavus; male pygofer usually without prominent lateral projections (e.g. Fig. 196h).............................................................................. 2

- Anterior apical cross-veins of forewings not coloured as above, but a conspicuous dark mark near hindmargin distad of clavus (e.g. Fig. 207f); side of male pygofer with prominent lateral projections (e.g. Fig. 207h)............................. 4

2. Hindwing marks consisting of three elongated, partly curved stripes ( Fig. 198g)............................................................................................... R. satsumana Matsumura ( R. formosana group), p. 69

- Hindwing marks not elongated, clustering around Ms1 and Ms2 forks (e.g. Fig. 196g)............................... 3

3. Hindwings with Ms1 curved near its base, a mark between bases of Ms1 and Ms2............................................................................................. R. obaerata Yang & Wu ( R. formosana group), p. 69

- Hindwings with Ms1 straight near its base, a mark around Ms2 fork ( Fig. 196g)............................................................................................... R. formosana Matsumura ( R. formosana group), p. 68

4. A group of four adjacent forewing marks around the cross-vein between of Cu1 and Ms1b; hindwing marks faint...................................................................... R. inoptata Yang & Wu ( R. latipennis group), p. 75

- Forewing marks only distad of cross-vein (or junction) between of Cu1 and Ms1b; hindwing marks prominent............ 5

5. Hindwings with a round mark around apex of Ms1 and an elongated mark around base of Ms2; male aedeagus with a pointed terminal process ( Figs. 207m, p)................................. R. maculata Matsumura ( R. latipennis group), p. 76

- Hindwings with three rounded marks, a small one around end of Cu, a larger one near the end of Ms1, and again a small and faint one near base of Ms2; male aedeagus without a pointed terminal process................................................................................................... R. inorata Yang & Wu ( R. latipennis group), p. 75