A review of the family Alycidae (Acari, Acariformes) from South Africa Uusitalo, Matti Ueckermann, Edward A. Theron, Pieter D. Zootaxa 2020 2020-10-01 4858 3 301 340 Grandjean, 1943 Grandjean 1943 [151,496,1466,1493] Arachnida Alycidae Petralycus GBIF Animalia Acariformes 34 335 Arthropoda genus    Typespecies:  Petralycus unicornisGrandjean, 1943from Périgueux, France; by original designation.   Differential diagnosis.The genus can be segregated from the other genera of Alycidaeand most of the Endeostigmata by their prodorsum with less than six pairs of fundamental setae i.e. the pair of setae expis absent, the anterior pair of prodorsal sensilla being globular, and the tapering naso.   Remark.  Petralycus longicornis Theron, 1977and  Petralycus brevicornis Theron, 1977from South Africaare redescribed in accordance with other species diagnoses herein. 3034037314 [151,1176,1535,1559] France Perigueux 34 335 1 holotype