Thalassaphorura Bagnall, 1949, Bagnall, 1949

Sun, Xin, Chen, Jian-Xiu & Deharveng, Louis, 2010, Six new species of Thalassaphorura (Collembola, Onychiuridae) from southern China, with a key to world species of the genus, Zootaxa 2627, pp. 20-38: 22-24

publication ID

http://doi.org/ 10.5281/zenodo.198236

DOI

http://doi.org/10.5281/zenodo.5668515

persistent identifier

http://treatment.plazi.org/id/761E3C0C-5E51-902B-FF78-FBB6FA3BFD37

treatment provided by

Plazi

scientific name

Thalassaphorura Bagnall, 1949
status

 

Key to world species of the genus Thalassaphorura Bagnall, 1949  

1 Th. I without pso, antennal base usually with 2 pso, PAO with more than 44 vesicles, large size (more than 3 mm). ....................................................................................................................................saccardyi ( Denis, 1935); Algeria

- Other combination of characters ................................................................................................................................. 2

2 Antennal base with 3 pso ............................................................................................................................................. 5

- Antennal base with 4 pso ............................................................................................................................................ 3

3 Head with 4 + 4 posterior pso, ventral tube chaetae as 1 + 1 / 7–8 + 7–8 / 2 + 2, AS equals 0.7 unguis ................................. ........................................................................... halophila ( Bagnall, 1937) sensu Fjellberg 1998; Northern Holarctic

- Head with 2 + 2 posterior pso, ventral tube chaetae less than above ............................................................................. 4

4 Ventral tube with 4 + 4 distal chaetae, AS absent, Th. I with 3 + 3 pso, AS absent........................................................... .......................................................................................................... hoguei ( Palacios-Vargas & Díaz, 1995); Mexico

- Ventral tube with 7 + 7 distal chaetae, AS present, Th. I with 2 + 2 pso, AS equals 0.8 unguis ....................................... ................................................................................................................................ tamurai ( Yue & Yin, 2000)   ; China

5 AIIIO with 4 papillae................................................................................................................................................... 6

- AIIIO with 5 papillae................................................................................................................................................... 9

6 Dorsal pso formula 32 / 122 / 22332, AS present and small ............................... butrosi ( Christiansen, 1956); Lebanon

- Dorsal pso formula not as above, AS absent .............................................................................................................. 7

7 Dorsal pso formula 32 / 133 / 33333 .................................................................................. franzi ( Stach, 1946)   ; Austria

- Dorsal pso formula 32 / 233 / 33343 ............................................................................................................................... 8

8 Ventral pso formula 11 /000/01000, ventral tube chaetae as 0+0/ 6 + 6 / 1 + 1 ..................................................................... .................................... cryptopyga ( Denis 1931) sensu Najt & Weiner, 1997; Neotropics, Pacific islands, Indonesia

- Ventral pso formula 11 /000/01120, ventral tube chaetae as 1 + 1 / 6 + 6 / 2 + 2 ..................................................................... ...............................................................................................................tovtrensis (Kaprus’ & Weiner, 1995); Ukraine

9 Th. I without pso........................................................................................................................................................ 10

- Th. I with pso ............................................................................................................................................................. 12

10 Head with 3 + 3 posterior pso, unguiculus with basal lamella, AS as long as unguis ..................................................... ............................................................................................ alborufescens (Vogler, 1895) sensu Gisin (1957); Europe

- Head with 2 + 2 posterior pso, unguiculus without basal lamella ............................................................................... 11

11 Abd. I–III with 2 + 2 pso, vesicle number of PAO as 20–22, AS equals 0.9 unguis ....................................................... ......................................................................................................................... bagnalli ( Salmon, 1959); Great Britain

- Abd. I–III with 3 + 3 pso, vesicle number of PAO as 30–38, AS equals 0.7 unguis ....................................................... ...................................................................................................................... kirgisica ( Martynova, 1971); Kirghizstan

12 Th. I with 1 + 1 pso...................................................................................................................................................... 13

- Th. I with 2 + 2 pso...................................................................................................................................................... 19

13 Dorsal pso formula 32 / 11 (3) 1 (2)/ 22 (3) 2 (3) 2 (3) 3, AS equals 0.9 unguis ....................................................................... ....................................................................................... moniezi (Bagnall, 1935) sensu Salmon (1959); Great Britain

- Dorsal pso formula not as above................................................................................................................................ 14

14 Th. II–III with 2 + 2 pso each ....................................................................................................................................... 15

- Th. II–III with 3 + 3 pso each ...................................................................................................................................... 16

15 Ventral pso formula 11 /000/01000, ventral tube chaetae as 1 + 1 / 6 + 6 / 1 + 1, subcoxa 1 of legs I, II and III with 1, 1 and 1 pso respectively, AS equals 0.2–0.25 unguis ........................................................................ reducta   sp. nov.; China

- Ventral pso formula 11 /000/01010, ventral tube chaetae as 0+0/ 6 + 6 / 1 + 1, subcoxa 1 of legs I, II and III with 2, 2 and 2 pso respectively, AS equals 0.4 unguis .................................................................................... bapen   sp. nov.; China

16 Ventral side of abdomen without pso, AS equals 0.7 unguis.......... thalassophila ( Bagnall, 1937)   ; Northern Europe 1

- Ventral side of abdomen with pso.............................................................................................................................. 17

17 Dorsal pso formula on Abd. I– V 33334 View Materials , ventral pso formula 0 1120, subcoxa 1 of legs I, II and III with 1, 1 and 1 pso respectively, AS equals 0.3 unguis, d0 absent .............................. jailolonis ( Yoshii & Suhardjono, 1992)   ; Indonesia

- Dorsal pso formula on Abd. I–V not as above; subcoxa 1 of legs I, II and III with 2, 2 and 2 pso respectively ..... 18

18 Chaetae on ventral tube as 1 + 1 / 7 + 7 (8)/ 2 + 2, dorsal pso formula on Abd. I–V 333 (4) 5 (4) 4 (3), ventral pso formula 0111(2)0, AS equals 0.5 unguis ................... debilis (Moniez, 1890)   ; Western and northern Europe, littoral species 1

- Chaetae on ventral tube as 0+0/ 6 + 6 / 2 + 2, dorsal pso formula on Abd. I– V 33343 View Materials , ventral pso formula 0 1110, AS equals 0.75 unguis ..................................................................................... grandis   sp. nov.; China, forest soil species

19 Dorsal pso formula 32 / 233 / 33343 .............................................................................................................................. 20

- Dorsal pso formula not as above ............................................................................................................................... 31

20 Distal whorl of tibiotarsi with 7 chaetae ..................................................................................................................... 21

- Distal whorl of tibiotarsi with 9 chaetae ................................................................................................................... 23

21 Dorsal S-chaetae on head 2 + 2 ................................................................................................................................... 22

- Dorsal S-chaetae on head 1 + 1, AS as long as unguis..................................................................................................... ................................................................................... petaloides ( Rusek, 1981)   ; Irak, New Caledonia, Hawaii, China

22 Unguiculus very small, less than 5 times the length of inner edge of unguis, ventral side of head with 1 + 1 pso, AS equals 0.9 unguis............................................................................................. thaibinhensis ( Nguyen, 2001); Vietnam

- Unguiculus equals 0.5 inner edge of unguis, with basal lamella, ventral side of head with 2 + 2 pso, AS equals 0.7 unguis ............................................................................................................................... tibiotarsalis   sp. nov.; China

23 Ventral pso formula 11 /000/01110 ............................................................................................................................ 24

- Ventral pso formula 11 /000/01120 or 11 /000/ 11120 .................................................................................................. 25

24 Th. I with 7 + 7 chaetae, length 1.4 mm ........................................................................................................................... ............................. duplopunctata (Strenzke, 1954) sensu Fjellberg 1998   ; Northern Holarctic, mostly littoral species

- Th. I with 5 + 5 chaetae, AS equals 0.2 unguis, length 0.8–1.1 mm ....... pomorskii   sp. nov.; China, forest soil species

25 Ventral pso formula 11 /000/ 11120, dorsal S-chaetae on head 1 + 1, AS as long as unguis, unguiculus equals 0.7 inner edge of unguis, without basal lamella................................................................ kwona ( Thibaud & Lee, 1994); Korea

- Ventral pso formula 11 /000/01120............................................................................................................................. 26

26 4 + 4 chaetae between two posterior inner pso on head, chaetae on ventral tube as 1 + 1 / 6 + 6 / 2 + 2, AS equals 0.5 unguis .................................................................................................. lifouensis ( Thibaud & Weiner, 1997); New Caledonia

- 3 + 3 chaetae between two posterior inner pso on head ............................................................................................... 27

27 PAO with about 10–13 vesicles, dorsal S-chaetae formula 2 /011/ 11101, unguiculus without basal lamella, as long as unguis, ventral tube chaetae as 1 + 1 / 5 + 5 / 2 + 2, Th. I with 6 + 6 (7 + 7) chaetae, AS equals 0.4 unguis.............................. ........................................................................................................................................ tenuis Babenko, 2007; Russia

- PAO with more than 20 vesicles................................................................................................................................. 28

28 Th. I with 5 + 5 chaetae, unguiculus with basal lamella............................................................................................... 29

- Th. I with more than 5 + 5 chaetae, unguiculus without basal lamella, AS equals 0.8 unguis .................................... 30

29 Unguiculus equals 0.75 inner edge of unguis, S-chaetae not differentiated, AS equals 0.7 unguis, Abd. VI with one axial chaeta dorsally (m0) ............................................... zschokkei   ( Handschin, 1919) sensu Pomorski, 1998; Europe

- Unguiculus equals 0.5 inner edge of unguis, S-chaetae differentiated, AS equals unguis, Abd. VI with two axial chaetae dorsally (a0 and m0) ....................................................................................................... tiani   sp. nov.; China

30 Chaetae on ventral tube as 0+0/ 6–7 + 6–7 /0+0, labial type AC, labial proximal chaetae as 7, male ventral organ pres- ent................................................................................................................. qixiaensis Yan, Shi & Chen, 2006   ; China

- Chaetae on ventral tube as 1 + 1 / 6–7 + 6–7 / 1 + 1 (2 + 2), labial type A, labial proximal chaetae as 6, strictly parthenoge- netic ............................................................................... encarpata   ( Denis, 1931) sensu Fjellberg 1998; Cosmopolitan

31 Dorsal pso formula 32 / 233 / 33333 ............................................................................................................................. 32

- Dorsal pso formula not as above................................................................................................................................ 35

32 PAO with about 45 vesicles, AS equals 0.4 unguis ....................................................... ishikawai ( Yosii, 1956); Japan

- PAO with less than 40 vesicles ................................................................................................................................. 33

33 Unguiculus with basal lamella, PAO with about 25 vesicles, AS equals 0.7 unguis...................................................... ............................................................................................................................. guineaensis ( Salmon, 1965); Guinea

- Unguiculus without basal lamella.............................................................................................................................. 34

34 Ventral pso formula 11 /000/ 11200, chaetae on ventral tube as 1 + 1 / 6 + 6 / 2 + 2 ................................................................ ...................................................................................................................... yodai ( Yosii, 1966)   ; Nepal, China, Japan

- Ventral pso formula 1 /000/ 11120, chaetae on ventral tube as 0+0/ 6 + 6 / 2 + 2 ........ yolandae ( Izarra, 1971); Venezuela

35 Dorsal pso formula 32 / 2 (1) 33 / 333 (4) 5 (4) 4 (3), ventral pso formula 11 /000/0111(2)0, chaetae on ventral tube as 1 + 1 / 7 + 7 (8)/ 2 + 2, AS equals 0.5 unguis ............................................................. debilis (Moniez, 1890)   ; Northern Europe 1

- Dorsal and ventral pso formula not as above ............................................................................................................. 36

36 Dorsal pso formula 32 / 233 / 3333 (4) 2, ventral pso formula 11 /000/00010, chaetae on ventral tube as “ 9–10 + 9–10 ” according to original description, AS equals 0.5 unguis .............................................. orientalis ( Stach, 1964)   ; China

- Dorsal pso formula 32 / 233 / 33342, ventral pso formula 1 / 111 /00000, chaetae on ventral tube as 1 + 1 / 6 + 6 / 1 + 1, AS equals about 0.7 unguis .............................................................................................. ghatensis ( Prabhoo, 1971); India