In search of the true Tydeus (Acari, Tydeidae) André, Henri M. Journal of Natural History 2005 2005-04-30 39 13 975 1001 Oudemans , Oudemans 1928 [484,842,417,441] Arachnida Tydeidae Tydeus GBIF Animalia Acari 17 991 Arthropoda species demeyeri    Tydeus spathulatusOudemans ( Figures 2C, 3D, 4C, 4B, 5D, 6B, 9, 10) The species was described by Oudemans (1928b, p 380) and synonymized with  caudatusby Thor (1933, p 38). Oudemans (1937, p 925) owned that his  spathulatuswas a junior synonym of Dugès’  caudatusas proposed by Thor. However, no illustration of the species has ever been published. The major feature reported by Oudemans (1928b)is the presence of six spatulate (‘‘langspatelvormig’’) posterior setae.  The three slides in Oudeman’s collection contain different species. The description of this section refers to the typespecimens that Oudemanspurchased from Berleseand collected from Padovain Italy. Specimensdiffer from Oudemans’description in two points. Theposterior opisthosomal setae are not spatulate but rather lanceolate. Dependingon the orientation, they sometimes seem to be clavate, but never spatulate (see Figure 3D, E). Thenumber of lanceolate setae amounts to five pairs ( Figure 10A), and not three as written by Oudemans. Other dorsal opisthosomal setae are serrate.  Leg chaetotaxy in adults I(8-4-3-3-1), II(6-2-2-2-0), III(5-2-1-1-1), and IV(5-2-1-1-0). Eupathidia on tarsus I: ft99, ( tc) and ( p). Solenidiotaxy: 2. Dorsal setae on genua I and II tapered ( Figure 10B), on genua III and IV blunt ( Figure 10C, D)  Palp and chelicera Palp and chelicera apparently similar to those of  croceus.  Genital chaetotaxy (0,?-6-4). Compact striation pattern ( Figure 2C). The species exhibits the typical  Tydeusstriation pattern defined by Baker (1965)as well as two eyespots on the prodorsum.  Figure 10.  Tydeus spathulatus. The five lanceolate terminal dorsal setae (A), dorsal setae of genu I (B) and IV (C), with a detail of the tip of the former (D). Scale bar: 10 Mm.  Length of the idiosoma (in Mm) Length is 368¡16 ( n54) in females and 331¡7 ( n53) in males. NS( vi)526, NS( ep)536.  Designation of a lectotype As explained in the Material and Methods section, the 12 specimensof this species were remounted separately. Therefore, I hereby designate as lectotypethe female remounted in the slide with the original label handwritten by Oudemans. The other slides with new labels contain the paralectotypes. Italy The Oudemans Depending 18 992 1