Sperchon (Hispidosperchon) hystrix Komárek, 1921

Sabatino, Antonio Di, Gerecke, Reinhard, Gledhill, Terence & Smit, Harry, 2009, On the taxonomy of water mites (Acari: Hydrachnidia) described from the Palaearctic, part 2: Hydryphantoidea and Lebertioidea, Zootaxa 2266, pp. 1-34 : 22

Sperchon (Hispidosperchon) hystrix Komárek, 1921

Species incerta

Discussion: The holotype male and only specimen on which this taxon is based, is lost, and the species has not been found again since its first description from the Bohemian mountains. The original description poses several important open questions: (1) palps insert parallel to each other or rotated to an oblique-horizontal position? (2) Is there a glandular pore on Cx-III (the statement "all [coxal] plates without any setation" suggests that the specimen was badly damaged or insufficiently observed)? (3) Are there dorsal muscle insertion sclerites? As these and other important questions cannot be answered in the absence of the holotype, S. hystrix must be considered a species incerta .