Paralobella, Cassagnau & Deharveng, 1984

Kasai, Hiro, Hayasaka, Daisuke & Sawahata, Takuo, 2022, First report of the genera Paralobella and Blasconura (Collembola: Neanuridae Neanurinae) from Japan with the description of three new species, Zootaxa 5168 (3), pp. 332-349 : 337-338

Key to Paralobella modified from Jiang et al. (2018)

1 Chaeta O of tubercle Fr absent.......................................................................... 2

- Chaeta O of tubercle Fr present.......................................................................... 6

2 Tubercle Dl of Th. II–III with 5 (4+s) chaetae (besides of ms)....................... P. erawan ( Yosii, 1976) ( Thailand)

- Tubercle Dl of Th. II–III with 4 (3+s) chaetae (besides of ms).................................................. 3

3 Tubercle Di of Th. II–III only with 1 chaeta, tubercle Oc on head only with Ocm chaeta................................................................................................... P. selangorica ( Yosii, 1976) ( Malasia)

- Tubercle Di of Th. II–III with 2–3 chaetae, tubercle Oc on head with 2–3 chaetae.................................. 4

4 Tubercle Di of Th. II–III with 2 chaetae..................................... P. penangensis ( Yosii, 1976) ( Malasia)

- Tubercle Di of Th. II–III with 3 chaetae................................................................... 5

5 Abd. I–III: tubercle De with 5 (4+s) chaetae, tubercle Dl with 3 chaetae; mandible complicated, totally with 16 teeth in two rows.................................................................... P. apsala ( Yosii, 1976) ( Thailand)

- Abd. I–III: tubercle De with 4 (3+s) chaetae, tubercle Dl with 2 chaetae; mandible relatively simple, with 5 or 6 teeth in one row................................................................ P. kinabaluensis ( Yoshii, 1981) ( Malasia)

6 Tubercle De of Th. II–III with 4 (3+s) chaetae, VT with 3+3 chaetae................ P. sabahna ( Yoshii, 1981) ( Malasia)

- Tubercle De of Th. II–III with 5 (4+s) chaetae, VT with 4(5)+4(5) chaetae........................................ 7

7 Tubercle Di, De, DL of Th. I respectively with 2, 2, 1 chaetae.................................................. 8

- Tubercle Di, De, DL of Th. I respectively with 1, 2, 1 chaetae.................................................. 9

8 Tubercle Dl of Th. II–III with 4 (3+s) chaetae, tubercle Dl of Abd. IV with 6 (5+s) chaetae............................................................................................ P. khaochongensis ( Yosii, 1976) ( Thailand)

- Tubercle Dl of Th. II–III with 5 (4+s) chaetae, tubercle Dl of Abd. IV with 3 (2+s) chaetae............................................................................................ P. paraperfusa ( Gapud, 1968) ( Philippines)

9 Tubercle De and Dl of Abd. V fused, body bicolor or tricolor..... P. orousseti Cassagnau & Deharveng, 1984 ( Philippines)

- Tubercle De and Dl of Abd. V separate, body monocolor.................................................... 10

10 Mandible with 20 teeth............................................. P. palustri s Jiang, Luan & Yin, 2012 ( China)

- Mandible with less than 8 teeth......................................................................... 11

11 Mandible with 3 teeth, body color yellow.......................................... P. kuchierabu sp. nov. ( Japan)

- Mandible with 6 or 7 teeth, body color red................................................................ 12

12 Mandible with 6 teeth, tubercle L of Abd. II-III with 6 (5+s) chaetae..... P. breviseta Luo & Palacios-Vargas, 2016 ( China)

- Mandible with 7 teeth, tubercle L of Abd. II-III with 4 (3+s) or 7 (6+s) chaetae................................... 13

13 Tubercle Di of Th. II–III with 2 chaetae, tubercle L of Abd. II-III with 4 (3+s) chaetae, mandibular basal tooth much larger than the second tooth......................................................... P. perfusa ( Denis, 1934) (Indochina)

- Tubercle Di of Th. II–III with 3 chaetae, tubercle L of Abd. II-III with 7 (6+s) chaetae, mandibular basal tooth slightly larger than the second one............................................... P. tianmuna Jiang, Wang & Xia, 2018 ( China)