The aquatic Coleoptera of Prince Edward Island, Canada: new records and faunal composition

Abstract

Th e aquatic Coleoptera (Gyrinidae, Haliplidae, Dytiscidae, Hydrophilidae, Elmidae, Dryopidae, Heteroceridae) of Prince Edward Island, Canada is surveyed. Seventy-two species are now known to occur on Prince Edward Island, 26 of which are added to the island's faunal list. Th ree species, Gyrinus aquiris LeConte, Oulimnius latiusculus (LeConte), and Helichus striatus LeConte, are removed since there are no voucher specimens or published records to substantiate their presence. Th e name Dineutus horni is designated as an incorrect subsequent spelling of Dineutus hornii Roberts, 1895. Th e composition of the fauna is briefl y discussed, both from regional and zoogeographic perspectives. Th ere is only one introduced species, Helophorus grandis Illiger. Only one third of the aquatic fauna recorded on the neighbouring mainland has been found on Prince Edward Island, perhaps refl ecting an island-associated diminution, the paucity of collecting, an area eff ect, or a combination of all these factors. Th e island faunas of Prince Edward Island, Cape Breton Island, and insular Newfoundland are compared. Prince Edward Island's is 36% smaller than the others, in contrast with the island's carabid fauna which is almost identical in magnitude with that of Cape Breton. Th is might refl ect dispersal obstacles, the relative paucity of aquatic habitats on the island, or an insuffi cient collecting eff ort. Further research would be desirable, both to better discern the composition of the province's fauna, as well as to monitor the health of aquatic ecosystems in relation to anthropogenic activities.

Coleoptera associated with macrophytes of the genus Salvinia in four oxbow lakes in two river basins in southeast Brazil

“…as Curculionidae, Chrysomelidodae and Staphylinidae, are not strictly aquatic (Jäch and Balke, 2008;Majka, 2008), but are associated with riparian vegetation and can live on the emergent parts of aquatic plants, especially when they are related to the plants of the terrestrial habitat on the neighboring bank, as is the case at the study sites. The majority of the species in the family Lampyridae are land-based, with very few aquatic representatives at the larval stage (Jäch and Balke, 2008).…”

The Gyrinidae (Coleoptera) of the Maritime Provinces of Canada: new records, distribution, and faunal composition

“…Dineutus nigrior is newly recorded in New Brunswick and Nova Scotia. It was reported from Prince Edward Island by Majka (2008). It is widely distributed in the region (Fig.…”

“…7). Note: this species has sometimes been referred to as "Dineutus horni" a name which Majka (2008) designated as an incorrect subsequent spelling of "Dineutus hornii." Morrissette (1979) reported it from boggy and semi-boggy lakes.…”

“…Morrissette (1979) reported that it preferred clear, running water. Majka (2008). It is widely distributed in the region (Fig.…”

The Haliplidae (Coleoptera) of Atlantic Canada: new records, distribution, and faunal composition

“…Th ere is no evidence that it occurs in Newfoundland. Brigham (1996), Chandler (2001), Majka (2008), Roughley (1991), Sikes (2004), andVondel (2005 …”