The aquatic Coleoptera of Prince Edward Island, Canada: new records and faunal composition Author Majka, Christopher Nova Scotia Museum, Halifax, NS, Canada text ZooKeys 2008 2008-09-04 2 2 239 260 journal article 10.3897/zookeys.2.25 5a9a5eda-7a2b-43aa-8e8d-40ef25926ec6 1313–2970 576401 Helophorus grandis Illiger, 1798 Queens Co.: Harrington , 14. VI .2004 , C. Noronha , barley field, pitfall trap , (1, ACPE ) ; Mount Herbert , Orphanage Pond , 30. V .1923 , J. R . Mutch , (1, UPEI ) ; West Royalty , 16. V .1983 , L.S. Th ompson, (1, ACPE ) ; Wood Islands , 30. VI .2003 , C.G. Majka , (1, CGMC ) . Newly recorded on Prince Edward Island , this species favours temporary pools and muddy or weedy margins of ponds or lakes ( Smetana 1988 ). This adventive, Palaearctic species was first reported in North America by Darlington (1927) . Smetana (1985) examined specimens from as early as 1904 from Montreal, although Brown (1940) noted a specimen from Chicoutimi, Québec , from the “second” collection of Provancher acquired sometime between 1877 and 1892 . The earliest records from New Brunswick are in 1926 and from Nova Scotia in 1947 ( Smetana 1985 ) so the collection from 1923 on Prince Edward Island establishes a new early timeline for H. grandis in the Maritime Provinces of Canada .