Willowsia, Shoebotham, 1917

Chai, Rui & Ma, Yitong, 2017, Two new species of Willowsia (Collembola: Entomobryidae) from Yunnan Province, China, European Journal of Taxonomy 311, pp. 1-12 : 10-11

Key to the Chinese species of the genus Willowsia

1. Abd. II with 2+2 mac ………………………………………………………………………………2

– Abd. II with at lest 3+3 central mac ………………………………………………………………3

2. Abd. III with 1+1central mac …………………………………………… W. formosana Denis, 1929

– Abd. III with 2+2 central mac ………………………………………… W. jacobsoni (Börner, 1913)

3. Abd. II with 3+3 mac ………………………………………………………………………………4

– Abd. II with at lest 4+4 mac ………………………………………………………………………11

4. Abd. I with 4 +4 mac …………………………………… W. qui Zhang, Chen & Deharveng, 2011

– Abd. I at most 3+3 mac ……………………………………………………………………………5

5. Abd. III with 2+2 central mac ……………………………………………………………………6

– Abd. III with 3+3 central mac ……………………………………………………………………9

6. Scales present on antennae …………………… W. guangdongensis Zhang, Xu & Chen, 2007

– Scales absent on antennae …………………………………………………………………………7

7. Body scales of short rib type ………………………………………… W. japonica (Folsom, 1897)

– Body scales of long basal rib type …………………………………………………………………8

8. Abd. IV with 5+5 central mac ……………………………… W. pseudobuskii Pan & Zhang, 2016

– Abd. IV with 7+7 central mac ……………………………… W. pseudoplatani Zhang & Pan, 2016

9. Abd. II without blue transverse band …………………………… W. nigromaculata (Lubbock, 1873)

– Abd. II with a blue transverse band …………………………………………………………………10

10. Metathorax blue pigmented, cephalic S 0 absent …………………… W. similis Pan & Zhang, 2016

– Metathorax unpigmented, cephalic S 0 present ……………………… W. fascia Zhang & Pan, 2016

11. Abd. III with 2+2 central mac ……………………………………………………………………12

– Abd. III with 3+3 central mac ……………………………………………………………………13

12. Abd. III with 3+3 lateral mac ………………………………………… W. baoshanensis sp. nov.

– Abd. III with 4+4 lateral mac ……………………………… W. guangxiensis Shi & Chen, 2004

13. Scales absent on antennae and manubrium …… W. yiningensis Zhang, Chen & Deharveng, 2011

– Scales present on antennae and manubrium ……………………………………………………14

14. Abd. II–III with blue transverse bands ………………………………… W. zhaotongensis sp. nov.

– Abd. II–III with scattered blue pigment and irregular patches …… W. shi Pan, Zhang & Chen, 2006