A revision of the family Ameroseiidae (Acari, Mesostigmata), with some data on Slovak fauna Author Masan, Peter Institute of Zoology, Slovak Academy of Sciences, Dubravska cesta 9, 845 06 Bratislava, Slovakia uzaepema@savba.sk text ZooKeys 2017 2017-09-29 704 1 228 http://dx.doi.org/10.3897/zookeys.704.13304 journal article http://dx.doi.org/10.3897/zookeys.704.13304 1313-2970-704-1 111A101E74054C408F51693957A64D97 CB39FF8EFFA2FF8CFFBFFFA9FF94FF8B 1149838 Ameroseius hypogaeus Berlese, 1920 Ameroseius hypogaeus Berlese, 1920: 170. Ameroseius hypogaeus . - Castagnoli and Pegazzano 1985 : 190. Type depository. Istituto Sperimentale per la Zoologia Agraria, Firenze, Italy (holotype not designated). Type locality and habitat. Italy, Sardinia, Asuni, in nest European water vole, Arvicola amphibius (formerly Arvicola terrestris ). Comparative material. Italy : 1 ♀ (ISZA: 208/33, syntype ) - Asuni , Sardegna , nidi di topi campagnoli, leg. Krausse. Remarks. None of the two slides in the Berlese Collection bears a type designation, but without doubt they belong to the original type series of Berlese. Unfortunately, a female on slide 208/33 is unsuitable for study and will require remounting for definitive study, whereas the female on slide 210/39 must be lost because I was unable to find any specimen or dissected structures on that slide (both slides are opaque and essentially unusable).