Further contributions to the Hydradephaga (Coleoptera, Haliplidae, Gyrinidae and Dytiscidae) fauna of Prince Edward Island, Canada: new records, distributions and faunal composition Author Alarie, Yves text ZooKeys 2016 600 103 129 http://dx.doi.org/10.3897/zookeys.600.8856 journal article http://dx.doi.org/10.3897/zookeys.600.8856 1313-2970-600-103 97B30DD8F5B34A569C7478C655230D31 97B30DD8F5B34A569C7478C655230D31 Taxon classification Animalia Coleoptera Dytiscidae Ilybius erichsoni (Gemminger & Harold) Note. This species is reported from three localities of Prince County (Table 2). Habitat. This is a species of forested regions where it occurs amongst dense vegetation, usually Carex , at the margins of both temporary and permanent ponds ( Larson et al. 2000 ). Except for one specimen, which was collected in a shallow creek, all specimens of Ilybius erichsoni were collected in the type of habitats mentioned by Larson et al. (2000) (Table 1). Distribution in the Maritime Ecozone. This species is known also from the neighboring Provinces of New Brunswick and Nova Scotia ( Larson et al. 2000 ), and the Magdalen Islands ( Alarie 2009 ).