Paranura, Axelson, 1902

Kasai, Hiro & Sawahata, Takuo, 2023, Four new saproxylic species of Paranura Axelson, 1902 (Collembola: Neanuridae Neanurinae) from Japan, Zootaxa 5339 (6), pp. 501-519 : 517-518

Key to Paranura updated from Smolis & Deharveng (2015)

1 Head with 2+2 eyes................................................................................... 2

- Head with 3+3 eyes.................................................................................. 24

2 Tubercle Oc on head with 2 chaetae...................................................................... 3

- Tubercle Oc on head with 3 chaetae..................................................................... 12

3 Thorax II–III with 2 chaetae Di.......................................................................... 4

-. Thorax II–III with 3 chaetae Di.......................................................................... 6

4 Head without chaetae A......................................................... P. squamosa Cassagnau, 1991

- Head with chaetae A................................................................................... 5

5 Thorax II–III with 2 chaetae L.......................................... P. timorensis Yoshii & Suhardjono, 1992

- Thorax II–III with 3 chaetae L............................................. P. nudifera Yoshii & Suhardjono, 1992

6 Head with chaetae A and C .............................................................................. 7

- Head without chaetae A and C.......................................................................... 11

7 Thorax II–III with 3 and 4 ordinary chaetae De respectively, grey or blue pigment present on body................................................................................. .. P. impedita Palacios-Vargas & Deharveng, 1987

- Thorax II–III with 2 ordinary chaetae De, no grey or blue pigment present on body................................. 8

8 Thorax II–III with 2 ordinary chaetae Dl................................................................... 9

- Thorax II–III with 3 ordinary chaetae Dl................................................................. 10

9 Abd. I–III with 1 ordinary chaeta De.................................................. P. meo Deharveng, 1989

- Abd. I–III with 2 ordinary chaetae De............................................ P. godavarica Cassagnau, 1991

10 Head with chaeta O, abdomen IV with chaetae De shifted towards chaetae Dl............................................................................................... P. tapatia Palacios-Vargas & Peñaranda-Parada, 2005

- Head without chaeta O, abdomen IV with chaetae De not shifted..................................................................................................... P. colombiana Palacios-Vargas & Peńaranda-Parada, 2005

11 Thorax II–III with 1 ordinary chaeta De.............................................. P. johorensis ( Yosii, 1976)

- Thorax II–III with 2 and 2–3 ordinary chaetae De respectively.......................... P. garoensis Cassagnau, 1991

12 Head with chaeta O.................................................................................. 13

- Head without chaeta O............................................................................... 21

13 Abdomen V with 2+2 chaetae Di....................................................................... 14

- Abdomen V with 3+3 chaetae Di....................................................................... 18

14 Thorax II with 2 ordinary chaetae De.................................................................... 15

- Thorax II with 3 ordinary chaetae De..................................................................... 16

15 Tubercle Af on head without reticulations area, abdomen V with tubercles Di separate........ P. bisetosa Deharveng, 1989

- Tubercle Af on head with reticulations area, abdomen V with tubercles Di fused.................. P. nakamurai sp. nov.

16 Thorax III with 3 ordinary chaetae De........................... P. quadrilobata Hammer, 1953 sensu Fjellberg 1985

- Thorax III with 4 ordinary chaetae De................................................................... 17

17 Abdomen IV with 1 ordinary chaeta De, trochanters with 6 chaetae ........... P. microchaetosa Smolis & Deharveng, 2015

- Abdomen IV with 2 ordinary chaetae De, trochanters with 5 chaetae......... P. kedrovayensis Smolis & Deharveng, 2015

18 Thorax II–III with 2 and 3 ordinary chaetae De respectively.............................. P. dalgeri Deharveng, 1989

- Thorax II–III with 3 and 4 ordinary chaetae De respectively.................................................. 19

19 Tibiotarsi without chaeta M.................................................... P. tibiotarsalis Deharveng, 1989

- Tibiotarsi with chaeta M.............................................................................. 20

20 Abdomen V with tubercles Di separate, abdomen II without chaetae Ve, furcal remnant without microchaetae......................................................................................... P. modesta Deharveng, 1989

- Abdomen V with tubercles Di fused, abdomen II with chaetae Ve, furcal remnant with microchaetae...................................................................................... P. cassagnaui Smolis & Deharveng, 2015

21 Thorax III with 3 ordinary chaetae De................................................................... 22

- Thorax III with 2 ordinary chaetae De................................................................... 23

22 Abdomen V with 2+2 chaetae Di.................................................... P. tamul Cassagnau, 1988

- Abdomen V with 3+3 chaetae Di................................................. P. coenobita Cassagnau, 1991

23 Thorax II–III with 2 ordinary chaetae Dl........................................... P. globulifer Deharveng, 1989

- Thorax II–III with 3 ordinary chaetae Dl............................................. P. leclerci Deharveng, 1989

24 Abdomen V at least twice longer than VI................................................................. 25

- Abdomen V slightly longer than VI..................................................................... 27

25 Thorax III with 3 ordinary chaetae De, tubercle Oc on head with 2 chaetae....................... P. s-uenoi Yosii, 1955

- Thorax III with 4 ordinary chaetae De, tubercle Oc on head with 3 chaetae...................................... 26

26 Abdomen V with 3+3 ordinary chaetae Di, furcal remnant with microchaetae....... P. reticulata Smolis & Deharveng, 2015

- Abdomen V with 2+2 ordinary chaetae Di, furcal remnant without microchaetae................ P. tsushimaensis sp. nov.

27 Abdomen V–VI with clear clavate chaetae................................................................ 28

- Abdomen V–VI without clear clavate chaetae............................................................. 29

28 Tibiotarsi I, II and III with 12, 12 and 11 chaetae respectively............................ P. clavisetis ( Axelson, 1902)

- Tibiotarsi I, II and III with 19, 19 and 18 chaetae respectively............................. P. sitchensis Fjellberg, 1985

29 Tubercle Oc on head with 2 chaetae..................................................................... 30

- Tubercle Oc on head with 3 chaetae...................................................................... 34

30 Thorax I with 1 chaeta De............................................................................. 31

- Thorax I with 2 chaetae De............................................................................ 32

31 Abdomen I–IV with 2 ordinary chaetae De.......................... P. sarukhani Palacios-Vargas & Deharveng, 1987

- Abdomen I–IV with 1 ordinary chaeta De............................. P. jorgei Palacios-Vargas & Deharveng, 1987

32 Thorax II with 2 ordinary chaetae De........................... P. longisensillata Palacios-Vargas & Deharveng, 1987

- Thorax II with 3 ordinary chaetae De ..................................................................... 33

33 Thorax III with 3 ordinary chaetae De........................... P. magdalenae Simón Benito & Palacios-Vargas, 2008

- Thorax III with 4 ordinary chaetae De............................. P. rooensis Simón Benito & Palacios-Vargas, 2008

34 Head with chaeta O.................................................................................. 35

- Head without chaeta O................................................................................ 47

35 Tibiotarsi I, II and III with 12, 12 and 11 chaetae respectively.......................... P. sexpunctata ( Axelson, 1902)

- Tibiotarsi I–III with higher number of chaetae............................................................. 36

36 Thorax III with 2 or 3 ordinary chaetae De................................................................ 37

- Thorax III with 4 ordinary chaetae De.................................................................... 40

37 Thorax II with 3 ordinary chaetae De, head without chaeta E................................................................................................ P. colorata Mills, 1934 sensu Simón Benito & Palacios-Vargas 2008

- Thorax II with 2 ordinary chaetae De, head with chaeta E.................................................... 38

38 Thorax III with 2 ordinary chaetae De, abdomen V with tubercles Di fused........... P. chiangdaoensis Deharveng, 1989

- Thorax III with 3 ordinary chaetae De, abdomen V with tubercles Di separate..................... .. P. alpicola sp. nov.

40 Abdomen V with 3+3 chaetae Di....................................................................... 41

- Abdomen V with 2+2 chaetae Di........................................................................ 43

41 Tubercle (L+So) on head with 9 chaetae..................................................... P. ieti ( Yosii, 1966)

- Tubercle (L+So) on head with 10 chaetae................................................................. 42

42 Abdomen V with tubercles Di separate, trochanters with 5 chaetae, furcal remnant with microchaetae, no grey or blue pigment present on body .......................................................... P. najtae Deharveng & Weiner, 1984

- Abdomen V with tubercles Di fused, trochanters with 6 chaetae, furcal remnant without microchaetae, grey or blue pigment present on body ........................................................ P. conjuncta Smolis & Deharveng, 2015

43 Head with additional chaetae in central area................................... P. setosa Smolis & Deharveng, 2015

- Head without additional chaetae in central area............................................................ 44

44 Trochanters with 5 chaetae, abdomen II without chaetae Ve1, no grey or blue pigment present on body....................................................................................... .. P. koryoi Deharveng & Weiner, 1984

- Trochanters with 6 chaetae, abdomen II with chaetae Ve1, grey or blue pigment present on body..................... 45

45 Labium with 11+11 chaetae, formula of labral chaetotaxy: 4/5, 4; furcal remnant without microchaetae.................................................................................. P. mjohjangensis Deharveng & Weiner, 1984

- Labium with 10+10 chaetae, formula of labral chaetotaxy other, furcal remnant with microchaetae................... 46

46 Abdomen IV with 1 ordinary chaeta De, distal part of labrum with 4 chaetae..... P. oregonensis Smolis & Deharveng, 2015

- Abdomen IV with 2 ordinary chaetae De, distal part of labrum with 2 chaetae ........ P. reducta Smolis & Deharveng, 2015

47 Claw with inner tooth, mandible with 8 teeth........................................... P. rosea Lee & Kim, 1984

- Claw without inner tooth, mandible with 3 teeth........................................................... 48

48 Thorax II with 2 ordinary chaetae De, abdomen V with 2+2 chaetae Di................... P. tridentata Lee & Kim, 1984

- Thorax II with 3 ordinary chaetae De, abdomen V with 3+3 chaetae Di........................... P. convallis sp. nov.