Oribatei 



399 



Lohmanniidae Grandjean, 1931 



Figures 321, 322 



Diagnosis: The lohmanniids have a cyhndrical hysterosoma which is 

 broadly attached to the propodosoma. The genital and anal plates ara 

 contiguous. The palpi have four movable segments. 



Figure 321 Torpacariis omittens Figure 322 Torpacanis omittens 



Grandjean. Venter of female. (After Grandjean. Dorsum of female. (After 

 Grandjean 1950) Grandjean 1950) 



Genera: 



1. Lohmannia Michael, 1898 {— Michaelia Haller, 1884, 



occ. ) 

 Type. Michaelia paradoxa Haller, 1884 



2. Annectacarus Grandjean, 1950 



Type. Annectacarus mucronatus Grandjean, 1950 



3. Cryptacarus Grandjean, 1950 



Type. Cryptacarus promecus Grandjean, 1950 



4. Meristacarus Grandjean, 1934 



Type. Meristacarus porcula Grandjean, 1934 



5. Thamnacarus Grandjean, 1950 



Type. Lohmannia deserticola Grandjean, 1934 



6. Torpacarus Grandjean, 1950 



Type. Torpacarus omittens Grandjean, 1950 



nom. prae- 



Discussion: Grandjean 1950 has limited the family to the above gen- 

 era, stating that they are an isolated, homogeneous group with primi- 

 tive characters. They lack tracheae, lateral-hysterosomal glands, and 

 have a gradual development in which the larval, three nymphal, and 

 adult stages resemble one another. 



