Allonychiurus Yoshii, 1995

Chang, Liang & Sun, Xin, 2016, Two new species of Allonychiurus Yoshii, 1995 (Collembola, Onychiuridae) from eastern China, with a key to world species of the genus, Zootaxa 4061 (4), pp. 429-437 : 436

Key to world known species of Allonychiurus Yoshii, 1995

1 AIIIO with four papillae............................................................................... 2

- AIIIO with five papillae.............................................................................. 10

2 Dorsal pso formula as 32/233/33343..................................................................... 3

- Dorsal pso formula not as above........................................................................ 8

3 Tibiotarsi I–III with 7 chaetae in distal whorl......................................... volinensis ( Szeptycki, 1964)

- Tibiotarsi I–III with 9 chaetae in distal whorl.............................................................. 4

4 Ventral pso formula as 11/000/11120..................................................................... 5

- Ventral pso formula as 11/000/01120 or 11/000/01110....................................................... 6

5 Ventral tube with 1+1 anterior chaetae, male ventral organ present on Abd. IV sternum......................................................................................... subvolinensis Babenko, Chimitova & Stebaeva, 2011

- Ventral tube without anterior chaetae, male ventral organ present on genital plate....... mariangeae ( Thibaud & Lee, 1994)

6 Ventral pso formula as 11/000/01110, labial palp of ABC type .......... unisetosus Babenko, Chimitova & Stebaeva, 2011

- Ventral pso formula as 11/000/01120, labial palp of AC type .................................................. 7

7 Th. I–III sterna with 0+0, 1+1, 1+1 chaetae, S-chaetae formula as 11/011/222010................................................................................................ elikonius Babenko, Chimitova & Stebaeva, 2011

- Th. I–III sterna with 1+1, 1+1, 1+1 chaetae, S-chaetae formula as 11/011/222121................ songi Sun & Wu, 2012

8 Subcoxae 1 of legs I–III with 1, 2, 2 pso respectively........................................ foliatus ( Rusek, 1967)

- Subcoxae 1 of legs I–III with 1, 1, 1 pso respectively........................................................ 9

9 Dorsal pso formula as 22/222/22222, ventral pso formula as 11/200/00110................ donjiensis ( Lee & Kim, 1994)

- Dorsal pso formula as 32/233/33333, ventral pso formula as 10/000/01020................ jindoensis ( Lee & Kim, 1994)

10 Th. I tergum with 2+2 pso............................................................................ 11

- Th. I tergum with 1+1 pso or without pso................................................................ 12

11 Ventral pso formula as 11/000/01120................................................. asiaticus ( Babenko, 2007)

- Ventral pso formula as 11/000/01110.............................................. shandongensis Sun & Li, 2015

12 Th. I tergum without pso............................................................................. 13

- Th. I tergum with 1+1 pso............................................................................ 15

13 Dorsal pso formula as 32/022/3334–53.................................................................. 14

- Dorsal pso formula as 32/022/33343.............................................. pseudocellitriadis ( Lee, 1974)

14 Ventral pso formula as 12/000/21120..................................................... zhejiangensis sp. nov.

- Ventral pso formula as 2/000/00000......................................... A. indicus (Choudhouri & Roy, 1965)

15 Dorsal pso formula as 32/133/33343.................................................................... 16

- Dorsal pso formula not as above....................................................................... 20

16 Ventral pso formula on Abd. I–V as 0 1110............................................................... 17

- Ventral pso formula on Abd. I–V not as above............................................................ 19

17 Number of chaetae on both side of axial line on Th. II tergum as 3+3..... flavescens ( Kinoshita, 1916) (after Yoshii, 1995)

- Number of chaetae on both side of axial line on Th. II tergum as 4+4........................................... 18

18 Tibiotarsi I–III with 9 chaetae in distal whorl, unguiculus with basal lamella.................... mediaseta ( Lee, 1974)

- Tibiotarsi I–III with 11 chaetae in distal whorl, unguiculus without basal lamella...... megasomus Sun, Yan & Chen, 2009

19 Ventral pso formula as 11/000/01000, 4+4 p-chaetae between posterior a-pso on head................................................................................................... antennalis Sun, Chen & Deharveng, 2011

- Ventral pso formula as 11/000/01010, 3+3 p-chaetae between posterior a-pso on head........... shinbugensis ( Lee, 1974)

20 Dorsal pso formula as 32/122/33343.................................................................... 21

- Dorsal pso formula not as above....................................................................... 22

21 Unguiculus with basal lamella, head ventrally with 2 + 2 pso................................... pseudokimi sp. nov.

- Unguiculus without basal lamella, head ventrally with 1 + 1 pso................................... kimi ( Lee, 1973)

22 Dorsal pso formula as 32/123/33343............................................... hangchowensis ( Stach, 1964)

- Dorsal pso formula as 32/132/33343.................................................................... 23

23 Head ventrally with 1 + 1 pso, unguiculus/unguis as 1/2................................ shanghaiensis ( Rusek, 1971)

- Head ventrally with 2 + 2 pso, unguiculus/unguis as 2/3............................... jongaksanensis ( Weiner, 1989)