Sinella

Ding, Yin-Huan & Zhang, Feng, 2015, Contribution to the eyed Sinella from China: two new species and additional reports on nine known species (Collembola: Entomobryidae), Zootaxa 3973 (3), pp. 474-490 : 488-489

Key to the eyed Sinella species from China

1 Unguiculus with a clear tooth on outer edge............................................................... 2

- Unguiculus smooth or serrate or with a tiny tooth on outer edge.............................................. 16

2 Mucronal basal spine absent........................................................ yasumatsui Uchida, 1948

- Mucronal basal spine present........................................................................... 3

3 Mucronal basal spine long reaching at least half way from tip of subapical tooth to tip of apical tooth.................. 4

- Mucronal basal spine short, at most slightly exceeding tip of subapical tooth...................................... 7

4 Eyes 3+3................................................................... wui Wang & Christiansen, 2000

- Eyes 1+1........................................................................................... 5

5 Abd. II with 5+5 central mac; Add. III with 2+2 central mac........................................ uniseta sp. nov.

- Abd. II with 3+3 central mac; Add. III with 1+1 central mac................................................... 6

6 Abd. I with 5+5 mac; Abd. IV with 5–6+5–6 mac.................................... sunae Pan, Zhang & Shi, 2012

- Abd. I with 6+6 mac; Abd. IV with 4+4 mac.................................... affluens Chen & Christiansen, 1993

7 Eyes 5+5........................................................................................... 8

- Eyes at most 4+4................................................................................... 10

8 Abd. III with 2+2 central mac.............................................. quinocula Chen & Christiansen, 1993

- Abd. III with 1+1 central mac........................................................................... 9

9 Body grey; labial chaeta R smooth; tenent hair on fore leg clavate............................... umesaoi Yosii, 1940

- Body white; labial chaeta R ciliate; tenent hair on fore leg pointed......................... gei Pan, Zhang & Shi, 2012

10 Eyes 4+4............................................................... qufuensis Chen & Christiansen, 1993

- Eyes at most 3+3.................................................................................... 11

11 Eyes 3+3.......................................................................................... 12

- Eyes at most 2+2..................................................................................... 13

12 Abd. III with 1+1 central mac........................................................ straminea ( Folsom, 1899)

- Abd. III with 2+2 central mac................................................ triocula Chen & Christiansen, 1993

13 Tenent hairs pointed................................................................................. 14

- Tenent hairs clavate................................................................................... 15

14 Abd. IV with 3+3 central mac; smooth part of dens 2.0 of mucro length.............. pauciseta Qu, Zhang & Chen, 2010

- Abd. IV with 6+6 central mac; smooth part of dens 1.2 of mucro length......................... sacellum Zhang, 2013

15 Tenent hair obviously longer than unguiculus and subequal to inner edge of unguis............... monoculata Denis, 1929

- Tenent hair subequal to unguiculus and obviously shorter than inner edge of unguis................. gracilis Zhang, 2013

16 Eyes 3+3.......................................................................................... 17

- Eyes at most 2+2.................................................................................... 19

17 Abd. IV with 3+3 central mac.......................................................................... 18

- Abd. IV with more than 6+6 central mac...................................................... yui Zhang, 2013

18 Body pigmented; 4 sublobal hairs on maxillary outer lobe; Abd. I with 5+5 mac.... colorata Zhang, Qu & Deharveng, 2010

- Body yellow white; 3 sublobal hairs on maxillary outer lobe; Abd. I with 4+4 mac............. longisensilla Zhang, 2013

19 Eyes 2+2........................................................................................... 20

- Eyes 1+1.......................................................................................... 24

20 Mucronal basal spine long reaching at midway between two teeth.............................. curviseta Brook, 1882

- Mucronal basal spine short, at most slightly exceeding tip of subapical tooth..................................... 21

21 Tibiotarsus without rows of “smooth” differentiated chaetae................................................. 22

- Tibiotarsus with rows of apparently “smooth” differentiated chaetae........................................... 23

22 Two eyes arranged in a longitudinal row....................................... browni Chen & Christiansen, 1993

- Two eyes arranged in a transverse row........................................... transoculata Pan & Yuan, 2013

23 Two eyes separate from each other; Abd. IV with 7+7 central and 6+6 lateral mac...... plebeia Chen & Christiansen, 1993

- Two eyes close to each other; Abd. IV with 3+3 central and 5+5 lateral mac................. pseudobrowni Zhang, 2013

24 Labial chaeta r/m=0.8; Abd. IV with 4+4 central mac............................................. abietis sp. nov.

- Labial chaeta r/m=0.15; Abd. IV with 6+6 central mac........................… fuyanensis Chen & Christiansen, 1993