Cyana

Bayarsaikhan, Ulziijargal & Bae, Yang-Seop, 2016, A review of the genus Cyana Walker, 1854 (Lepidoptera, Erebidae, Arctiinae) from Cambodia, with description of new species, Zootaxa 4114 (4), pp. 447-463 : 449

Key to the species of the genus Cyana from Cambodia based on male external morphology

1. Forewing with 1–3 dark discoidal spots................................................................... 5

- Forewing lacking 1–3 dark discoidal spots.................................................................. 2

2. Forewing triangular; hindwing with one dark discocellular spot................................................. 3

- Forewing elongate, rectangular; hindwing lacking a dark discocellular spot........................................ 4

3. Hindwing fuscous.................................................................... C. angkorensis sp. n.

- Hindwing white............................................................................... C. effracta

4. Ground color of forewing pure white with red and dark markings.................................... C. costifimbria

- Ground color of forewing orange with white markings................................................. C. kubani

5. Forewing with one dark discoidal spot..................................................................... 6

- Forewing with 2–3 dark discoidal spots.................................................................... 8

6. Forewing length more than 15 mm; forewing with red lines edged with black; hindwing pink with white costal area.................................................................................................. C. perornata

- Forewing length less than 15 mm; forewing without red lines edged with black; hindwing red or orange without white costal area............................................................................................... 7

7. Forewing with orange-red fascias, with one dark discocellular spot.................................. C. centripuncta

- Forewing with red, olive and black fascias, with one longitudinal dark band and one dark discocellular ring....... C. gelida

8. Ground color of forewing white, with yellow or olive yellow lines and 2 dark horizontal discoidal spots................ 9

- Ground color of forewing white, with red or pink lines and 2–3 dark longitudinal or triangle discoidal spots............. 10

9. Wingspan more than 20 mm; forewing with thick olive-yellow lines and with one dark costal spot.......... C. intercomma

- Wingspan less than 20 mm; forewing with slender yellow lines and without one dark costal spot.............. C. flavalba

10. Antemedial and postmedial lines of forewing black edged.................................................... 13

- Antemedial and postmedial lines of forewing not black edged................................................ 11

11. Apex of forewing rounded; hindwing with an elliptical dark patch in middle of costal area.................. C. peregrina

- Apex of forewing triangular; hindwing without one elliptical dark patch in middle of costal area...................... 12

12. Wingspan more than 25 mm; terminal line of forewing thick, distinctly angled in apex.................. C. obliquilineata

- Wingspan less than 25 mm; terminal line of forewing slender, rounded in apex............................ C. dudgeoni

13. Median area of forewing red, with 3 dark discoidal spots in rounded white patch.......................... C. coccinea

- Median area of forewing white, with 2–3 dark discoidal spots................................................. 14

14. Termen of forewing concave at apical 1/3; forewing with 2 dark spots and one red, short, horizontal band in discal area.................................................................................................. C. javanica

- Termen of forewing not concave at apical 1/3; forewing lacking the pattern described immediately above............... 15

15. Hindwing white-red with red in terminal area.................................................... C. inthanonica

- Hindwing pink with white in costal area................................................................... 16

16. Forewing length less than 15 mm; white medial area of forewing with 3 dark triangle discoidal spots....... C. determinata

- Forewing length more than 15 mm; white medial area of forewing with 3 dark inverted triangle discoidal spots.... C. bianca