Homidia

Jia, Shao-Bo, Zhang, Yu-Ping, Zhao, Yan & Jordana, Rafael, 2010, A new species of Homidia from China, and description of the dorsal chaetotaxy of all Chinese Homidia species (Collembola: Entomobryidae), Zootaxa 2683, pp. 23-34 : 32

Key of Chinese species of Homidia with known chaetotaxy

(H#, T# and A#––areas defined by Jordana and Baquero 2005. Number of macrochaetae per half tergum)

1 Abd. II with 2 and 3 macrochaetae on A1 and A2 respectively and Abd. III with 1 macrochaeta on A3 area.............. ....................................................................................................................................................................... H. sauteri

- Abd. II with 2 and 4 macrochaetae on A1 and A2 respectively and Abd. III with 1 macrochaeta on A3 area........... 2

2 Abd. III with 0, 0, 1 macrochaetae on A3, A4, and A5 .............................................................................................. 3

- Abd. III with not as above ............................................................................................................................................ 5

3 A10 on Abd. IV with 4(5) macrochaetae..................................................................................................................... 4

- A10 on Abd. IV with 3(2) macrochaetae ................................................................................. H. sichaunensis sp. nov.

4 A8 and A9 on Abd. IV with 1and 1 macrochaetae.................................................................................. H. formosana

- A8 and A9 on Abd. IV without macrochaetae ............................................................................................ H. emeiensis

5 A4 on Abd. III with 1 macrochaeta ............................................................................................................................. 6

- A4 on Abd. III with more than 1 macrochaeta .......................................................................................................... 20

6 T1 on Th. II with 3 macrochaetae................................................................................................................................ 7

- T1 on Th. II with 4 macrochaetae.............................................................................................................................. 12

7 T2 on Th. II with 2 macrochaetae ......................................................................................................... H. anhauiensis

- T2 on Th. II with more than 2 macrochaetae................................................................................................................ 8

8 T2 on Th. II with 3 macrochaetae........................................................................................................... H. tiantaiensis

- T2 on Th. II with more than 3 macrochaetae............................................................................................................... 9

9 T2 on Th. II with 4 macrochaetae.............................................................................................................................. 10

- T2 on Th. II with 5 macrochaetae............................................................................................................................... 11

10 H1 on head with 3 macrochaetae, A9–A10 on Abd. IV with 2 and 3 macrochaetae respectively ..................... H. leei

- H1 on head with 5 macrochaetae, A9–A10 on Abd. IV with 1 and 1 macrochaetae respectively............ H. tibetensis

11 A9–A10 on Abd. IV with 3 and 3 macrochaetae respectively .................................................................... H. latifolia

- A9–A10 on Abd. IV with 7 and 13(15) macrochaetae respectively............................................................ H. polyseta

12 T2 on Th. II with 4 macrochaetae............................................................................................................................... 13

- T2 on Th. II with 5 or 6 macrochaetae ....................................................................................................................... 15

13 Abd. IV with macrochaetae formula A6–A10: 0–7–0–0–4 (11 + 11) dorsal setae ................................. H. transitoria

- Abd. IV with more than 11+11 dorsal macrochaetae ............................................................................................... 14

14 A9–A10 on Abd. IV with 2 and 5 macrochaetae respectively ........................................................................ H. fascia

- A9–A10 on Abd. IV with 5 and 3 macrochaetae respectively ............................................................... H. qimenensis

15 T2 on Th. II with 6 macrochaetae, A3–A5 on Abd. III with 2 macrochaetae, 0, 1, 1 .............................. H. linhaensis

- T2 on Th. II with 5 macrochaetae.............................................................................................................................. 16

16 H3 (S’0) macrochaeta present on the head, A9 on Abd. IV with 1 macrochaeta ..................................... H. apigmenta

- H3 (S’0) macrochaeta absent on the head, A9 on Abd. IV with more than 1 macrochaeta ...................................... 17

17 8 or 9 macrochaetae on A10 on Abd. IV .................................................................................................. H. ziguiensis

- 4 macrochaetae on Abd. IV ....................................................................................................................................... 18

18 Dens with 88–114 spines ..................................................................................................................... H. huashanensis

- Dens with less than 80 spines .................................................................................................................................... 19

19 Dens with 17–38 spines. Chaetotaxy see Table 2................................................................................ H. phjongianica

- Dens with 29–41 spines Chaetotaxy see Table 2 ................................................................................. H. mediofascia *

20 A3–A5 on Abd. III with 0, 3, 0 macrochaetae, T1 and T2 on Th. II with 4 and 5 macrochaetae respectively.............. ........................................................................................................................................................................... H. socia

- A3–A5 on Abd. III with 0, 2, 1 macrochaetae........................................................................................................... 21

21 T1–T2 on Th. II with 2 and 4 macrochaetae respectively ...................................................................... H. pentachaeta

- T1–T2 on Th. II with 4 and 5 macrochaetae respectively .......................................................................... H. sinensis