Crossodonthina

Luo, Yongzheng & Chen, Jian-Xiu, 2009, A new species of the genus Crossodonthina (Collembola: Neanuridae: Lobellini) from China, Zootaxa 2121, pp. 57-63 : 57-58

Key to the species of the genus Crossodonthina

1 Eyes 2+2 ....................................................................................................................................................................... 2

- Eyes 3+3 ....................................................................................................................................................................... 4

2 Tubercles Di fused on Abd. V .................................................................................................... C. bidentata , sp. nov.

- Tubercles Di separate on Abd. V .................................................................................................................................. 3

3 Four setae on furcular remnant, mandible 3-branched with 1 basal tooth.................................................. C. montana

- Six setae on furcular remnant, mandible 2-branched with 3 basal tooth..................................................... C. hainana

4 Th. II-Abd. II with unpaired tubercles ...................................................... C. radiata ( Salmon), 1941 ( New Zealand)

- Th. II-Abd. II without unpaired tubercles..................................................................................................................... 5

5 Four tubercles (2 Di and 2 De) fused on cephalic posterior (occipital) area ...... C. altamontana Yoshii, 1981 (Sabah)

- Four tubercles (2 Di and 2 De) separate on cephalic posterior (occipital) area.............................................................. 6

6 Cephalic tubercle Fr without seta O........................................................................................................ C. formosana

- Cephalic tubercle Fr with seta O.................................................................................................................................. 7

7 Tubercles Di on Th. II-Abd. IV absent ......................................................................................................................... 8

- Tubercles Di on Th. II-Abd. IV distinct ....................................................................................................................... 9

8 Maxilla consisting of 3 stylets, inner one with fringed margin ....................... C. koreana Yosii & Lee, 1963 ( Korea)

- Maxilla consisting of 2 stylets, inner one without fringed margin ........................... C. nipponica Yosii, 1954 ( Japan)

9 Unguis with 3 inner teeth................................................................................................................... C. tiantongshana

- Unguis with 1 inner tooth ........................................................................................................................................... 10

10 Mandible 2-branched; maxilla 2-branched, each branch simple .......................................................... C. alatoserrata

- Mandible 4-branched; maxilla 2-branched, one branch simple, another bifurcated .............................. C. tridentiens