Scaeosopha, Meyrick, 1914

Li, Houhun, Zhang, Zhiwei & Sinev, Sergey Yu., 2012, Review of the genus Scaeosopha Meyrick, 1914 (Lepidoptera, Cosmopterigidae, Scaeosophinae) in the world, with descriptions of sixteen new species, Zootaxa 3322, pp. 1-34 : 6-7

Key to the world species of the genus Scaeosopha based on male genitalia

(excluding S. mitescens and S. atrinervis )

1. Valva leaf-shaped, ventral surface smooth, distal part hairy ( Fig. 3) (the percnaula- group)........................... 2

- Valva saccate, ventral surface with numerous small commalike processes, distal part normal ( Fig. 4) (the mitescens -group)..................................................................................................... 13

2. Valvella present....................................................................................... 3

- Valvella absent ( Fig. 37).............................................................. S. nullivalvella sp. nov.

3. Brachia of uncus with distinct process ( Fig. 3)............................................................. 4

- Brachia of uncus without process ( Fig. 35).................................................................. 6

4. Brachia of uncus with fingerlike process located near apex ( Fig. 3).............................. S. percnaula Meyrick

- Brachia of uncus with triangular or quadrate process located near middle or at base................................. 5

5. Brachia of uncus with triangular process located near middle; valvella not expanded distally ( Fig. 32)................................................................................................ S. sinevi Ponomarenko et Park

- Brachia of uncus with quadrate process at basal 2/5; valvella with distal 1/7 expanded into tuberculum ( Fig. 40).............................................................................................. S. tuberculata sp. nov.

6. Brachia of uncus truncate at apex ( Fig. 35)................................................................. 7

- Brachia of uncus acuminate at apex ( Fig. 33)............................................................... 8

7. Pleural lobes of eighth segment strongly sclerotized; valva broad subtriangular, valvella shuttle-shaped, anellus tapering to acuminate apex ( Fig. 35)............................................................ S. hongkongensis sp. nov.

- Pleural lobes of eighth segment not obvious; valva irregularly rectangular, valvella beak-shaped, anellus with rounded apex ( Fig. 38)........................................................................... S. sabahensis sp. nov.

8. Phallus coiled at middle ( Fig. 36)......................................................................... 9

- Phallus not coiled ( Fig. 33)............................................................................ 10

9. Valva rounded terminally, valvella with a small process at costal 3/4, anellus reaching 1/3 of brachia of uncus ( Fig. 36)............................................................................................ S. minuta sp. nov.

- Valva truncate terminally, valvella without process, anellus reaching base of brachia of uncus ( Fig. 41).................................................................................................... S. victoriensis sp. nov.

10. Eighth sternum with a strong thorn ( Fig. 33a), anellus rounded apically ( Fig. 33)................. S. betrokensis sp. nov.

- Eighth sternum without thorn, anellus cone-shaped ( Fig. 39)................................................. 11

11. Valvella acuminate apically ( Fig. 39).................................................... S. spinivalvata sp. nov.

- Valvella finger-shaped ( Fig. 34)......................................................................... 12

12. Valva without cucullus, slightly concave on costal margin ( Fig. 34)................................. S. erecta sp. nov.

- Valva with cucullus along basal half of costal margin....................................... S. pseusta (Diakonoff)

13. Valva with process or protruding on ventral margin ( Fig. 46)................................................. 14

- Valva neither with process nor protruding on ventral margin ( Fig. 43)........................................... 15

14. Valva with a toothlike process ventroapically, brachia of uncus expanded in basal half ( Fig. 47)..... S. dentivalvula sp. nov.

- Valva protruding ventromedially, brachia of uncus narrowed gradually to apex ( Fig. 46)............... S. convexa sp. nov.

15. Valva with commalike processes throughout ventral surface ( Fig. 43).......................... S. chionoscia Meyrick

- Valva with comma or droplike processes on ventral half ( Fig. 4).............................................. 16

16. Brachia of uncus with a process ( Fig. 4).................................................................. 17

- Brachia of uncus without process ( Fig. 45)................................................................ 18

17. Brachia of uncus slightly expanded distally, rounded at apex ( Fig. 51)............................ S. trigonia sp. nov.

- Brachia of uncus gradually narrowed distally, acuminate at apex ( Fig. 4).................... S. nigrimarginata sp. nov.

18. Valvella shorter than valva ( Fig. 45)............................................................ S. sattleri Li

- Valvella longer than valva ( Fig. 49)..................................................................... 19

19. Anellus heavily sclerotized, cone-shaped or tubular, truncate apically ( Fig. 49)................................ … 20

- Anellus membranous ( Fig. 42)......................................................................... 21

20. Anellus tongue-shaped ( Fig. 49)..................................................... S. grandannulata sp. nov.

- Anellus tubular, truncate apically ( Fig. 52)............................................... S. triocellata (Stainton)

21. Valvella with a setose process ( Fig. 42)................................................................... 22

- Valvella without process ( Fig. 44)....................................................................... 23

22. Tegumen deeply and narrowly concave at middle on anterior margin ( Fig. 42)..................... S. incantata Meyrick

- Tegumen shallowly and widely concave at middle on anterior margin ( Fig. 48)...................... S. gibbosa sp. nov.

23. Valva rounded; valvella slender, not dilated distally ( Fig. 44)................................... S. rotundivalvula Li

- Valva elongate oval; valvella strong, conspicuously dilated distally ( Fig. 50)................... S. rarimaculata sp. nov.