Hygrobates, Koch, 1837

Gerecke, Reinhard, 2021, The water mites of the family Hygrobatidae (Acari, Hydrachnidia) in Italy, Zootaxa 5009 (1), pp. 1-85 : 46-47

Hygrobates (s. str.) sp. fluviatilis – group

Material examined: Friuli-Venezia Giulia: I 1517, 0/0/1; Trentino-Alto Adige: I sa 33, 0/0/1; I 1285, 0/0/2; I 1637 , 0/0/9.

Previously published records from Italy: Abruzzo ( Cicolani & Sisino 1983, Cicolani & Di Sabatino 1985, 1988, 1991, Cicolani et al. 1995, Di Francesco et al. 1997, Di Sabatino & Cicolani 2001); Basilicata, Campania ( Cicolani et al. 1992a); Friuli-Venezia Giulia (“ H. naicus ”, Stammer 1932 , Cicolani et al. 1994, Di Sabatino et al. 2000); Lombardia (“ H. reticulatus ” Maglio 1905,1908 , “ H. naicus ” Maglio 1949 , H. fluviatilis Nocentini 1963 ); Marche (K. Viets 1955, Maglio 1956); Molise ( Cicolani et al. 1995); Piemonte (“ H. reticulatus ” Monti 1910 , H. fluviatilis Ramazzotti 1947 , K.O. Viets 1958, Nocentini 1963); Toscana (“ H. berlesei ?” Thor 1927); Trentino-Alto Adige (Gerecke 1991, Gerecke et al. 2009); Valle d’Aosta (“ H. reticulatus ” Monti 1910 ); Valle d’Aosta ( Monti 1910); Veneto ( Cicolani 1984, Gerecke & Di Sabatino 2013).

Remarks: In Italy, populations previously recorded as H. fluviatilis are representatives of at least four different species. Concerning material published under this name during the past decades, all records from Sardinia (and also Corsica) refer to H. corsicus (see above), records from continental Italy and Sicily were revised for this paper, allowing the identification of H. arenarius , H. fluviatilis , and H. cf. turcicus (see the respective sections for updated lists of Italian records). In this section, uncertain locality records are listed, which are based on unrevised data from bibliography, as well as findings of deutonymphs only.

Habitat: Rhithrobiont.

Distribution: Europe.