Cybaeus L. Koch, 1868

Lee, Sue Yeon, Yoo, Jung Sun & Kim, Seung Tae, 2021, Four new epigean spiders of the genus Cybaeus (Araneae: Cybaeidae) from South Korea, Zootaxa 4966 (4), pp. 458-468 : 459

Genus Cybaeus L. Koch, 1868

Type species: Amaurobius tetricus C. L. Koch, 1839 .

Diagnosis. See Paik (1978), Copley et al. (2009), Bennett (2017) and Bennett et al. (2020).

Key to the males of Korean Cybaeus species

1. PA without peg setae................................................................................... 2

- PA with peg setae..................................................................................... 3

2. PCo of the conductor conspicuously extended and protruding out of the cymbium.................... C. triangulus Paik

- PCo of the conductor short and not protruding out of the cymbium................................... C. longus Paik

3. Abdominal dorsum pale or light without a pattern............................................................ 4

- Abdominal dorsum dark and with patterns................................................................. 8

4. A cuticular spine present on the retrolateral surface of the palpal tibia............................................ 5

- Cuticular spine absent on the retrolateral surface of the palpal tibia.............................................. 6

5. Embolus long and curved windingly, conductor narrow, PA with 3 peg setae................... C. vanimaculatus sp. nov.

- Embolus short and curved smoothly, conductor conspicuously wide, PA with 4 peg setae............... C. auriculatus Seo

6. Embolus wrapped by the PCo, cymbial furrow present, PA with 10 peg setae.......... C. whanseunensis Paik et Namkung

- Embolus separated from the PCo, cymbial furrow absent, PA with 2–4 peg setae................................... 7

7. RTA 2/3 of tibia length, PCo small and beak-shaped, PA with 2 peg setae............................... C. parvus Seo

- RTA 4/5 of tibia length, PCo conspicuously large and ladle-shaped, PA with 4 peg setae...... C. pseudoauriculatus sp. nov.

8. Abdominal dorsum with mottled pattern, embolus conspicuously short, PA with 18 peg setae.............. C. Oaensis Seo

- Abdominal dorsum with spots and chevrons, embolus short or long, PA with 9–49 peg setae.......................... 9

9. PA quadrangle, conductor plow-shaped, PCo roundly depressed, cymbial furrow present, PA with 44 peg setae............................................................................................. C. aratrum Kim et Kim

- PA blunt, conductor auricle-shaped, PCo otherwise, cymbial furrow absent....................................... 10

10. Embolus wrapped by the PCo, 9 retromarginal teeth......................................................... 11

- Embolus separated from the PCo, 7–8 retromarginal teeth.................................................... 12

11. PCo twisted and arrowhead-shaped, PA with 49 peg setae........................................ C. geumensis Seo

- PCo straight and beak-shaped, PA with 12 peg setae................................. C. mosanensis Paik et Namkung

12. Seven retromaginal teeth.............................................................................. 13

- Eight retromarginal teeth.............................................................................. 14

13. Palpal tibia longer than patella, conductor narrow, Pa with 13 peg setae............................ C. culter . sp. nov.

- Palpal tibia shorter than patella, conductor wide, PA with 31 peg setae............................. C. ilweolensis Seo

14. Palpal tibia longer than patella, conductor narrow, PCo beak-shaped, PA with 21 peg setae....... C. yeongwolensis sp. nov.

- Palpal tibia shorter than patella, conductor wide, PCo arrowhead-shaped........................................ 15

15. Embolus long and almost close to the PCo, PA with 31 peg setae.................................. C. jogyensis Seo

-. Embolus short and extends to the middle of the conductor.................................................... 16

16. PCo large, RTA 4/5 of tibia length, PA with 35 peg setae....................................... C. seorakensis Seo

- PCo small, RTA length otherwise....................................................................... 17

17. Cymbial tip long, RTA 2/3 of tibia length, PA with 9 peg setae................................... C. songiensis Seo

- Cymbial tip short, RTA 1/2 of tibia length, PA with 13 peg setae.................................... C. jiriensis Seo