Hexabdella

Hernandes, Fábio A., Daud, Rodrigo D. & Feres, Reinaldo J. F., 2007, A new species of Hexabdella (Acari: Bdellidae) from Brazil, Zootaxa 1501 (1), pp. 57-63 : 58-60

Key to species of the genus Hexabdella

(From Van der Schyff et al. (2004), including the new species.)

1 Opistosomal setae distally branched............................................................................................................ 2

- Opistosomal setae smooth or slightly plumose ........................................................................................... 4

2 Dorsal striae coarsely to sparsely broken; seta ps1 smooth; coxa IV without macroseta ........................... 3

- Dorsal striae finely broken; seta ps1 branched; coxa IV with a serrated macroseta ..................................... ................................................................................... H. denheyeri Van der Schyff, Theron & Ueckermann

3 Marginal striae of hysterosoma with lobes, visible as dashed lines .............................. H. cinquaginta sp.n.

- Marginal striae of hysterosoma smooth ......................... H. singula Van der Schyff, Theron & Ueckermann 4 Eyes present ................................................................................................................................................. 5

- Eyes absent ................................................................ H. maraugia Van der Schyff, Theron & Ueckermann

5 Two pairs of eyes present; chelicerae striated ............................................................................................. 6

- One pair of eyes present; cheliceae smooth ........... H. unusoculata Van der Schyff, Theron & Ueckermann

6 Opistosomal setae smooth; movable cheliceral chela with about five small teeth; solenidotaxy of tibiae I– IV 1-1-1-0 .................................................................... H. miranda Van der Schyff, Theron & Ueckermann

- Opistosomal setae usually slightly plumose; movable cheliceral chela with one tooth; solenidotaxy of tibiae I–IV 3-2-1-0 ........................................................................................... H. mexicana (Baker & Balock)