Friesea

Smolis, Adrian, 2010, Two new species of Collembola: Friesea kariae sp. nov. (Neanuridae) and Stachia oregonensis sp. nov. (Odontellidae) from North America, Zootaxa 2515, pp. 36-44 : 40

Key to eyeless species of Friesea

1 Furcula and retinaculum present.................................................................................................................................. 2

- Furcula and retinaculum absent ................................................................................................................................... 8

2 Abd. VI with anal spines.............................................................................................................................................. 4

- Abd. VI without true anal spines, only thickened setae present ................................................................................... 3

3 Mucro on furca present, dens with 3+3 setae ................................................. F . anophtalma Thibaud & Weiner, 1997

- Mucro on furca absent, dens with 2+2 setae ............................................................ F . lisu Deharveng & Bedos, 1991

4 Abd. VI with five or three anal spines .......................................................................................................................... 5

- Abd. VI with two anal spines ................................................................................................ F. araucana Izarra, 1972

5 Abd. VI with five anal spines ...................................................................................................................................... 6

- Abd. VI with three anal spines..................................................................................................................................... 7

6 Retinaculum with one tooth .............................................................................................. F . cauchoisi Delamare, 1951

- Retinaculum with two teeth ................................................................................................................ F. karie sp. nov.

7 Ant. IV with 6 subcylindrical sensilla ...................................................... F . santo Weiner, Bedos & Deharveng, 2009

- Ant. IV with 7 subcylindrical sensilla ................................................... F . wabao Weiner, Bedos & Deharveng, 2009

8 Furcula remant with microsetae................................................................................................................................... 9

- Furcula remant without microsetae ....................................................................... F . lijiangensis Tamura & Yue, 1998

9 Abd. VI with anal spines............................................................................................................................................. 10

- Abd. VI without true anal spines, only thickened spine-like setae present ............................................................... 11

10 Microsetae on dens in one line .............................................................. F. subterranea subterranea Cassagnau, 1958

- Microsetae on dens in two parallel lines.................................................................................... F. tatrica Nosek, 1965

11 Tibiotarsi I, II, III with 17, 17, 16 setae respectively, Abd. VI with 2 spine-like setae.................................................. ................................................................................................................. F . hnaeu Weiner, Bedos & Deharveng, 2009

- Tibiotarsi I, II, III with 13, 13, 12 setae respectively, Abd. VI with 4 spine-like setae ................................................. ......................................................................................................... F . kanchanaburiensis Deharveng & Bedos, 1991