Enochrus hamiltoni
(Horn, 1890)
Enochrus hamiltoni is a water scavenger beetle in the Hydrophilidae, originally described from Florida in 1890. The has been recorded across much of North America, with recent documentation from Cuba representing the first Caribbean record outside the United States. It inhabits shallow, temporary ponds with muddy substrates and emergent vegetation.
Pronunciation
How to pronounce Enochrus hamiltoni: //ɪˈnɒkrəs ˈhæmɪltənaɪ//
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Identification
Belongs to the subgenus Lumetus within Enochrus, characterized by features typical of that subgenus. Specific diagnostic traits distinguishing E. hamiltoni from other Enochrus are not documented in available sources.
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Habitat
Inhabits small, shallow, temporary ponds with muddy bottoms and abundant emergent vegetation such as Eleocharis. Recorded from brackish coastal pond systems with sandy soils, sparse surrounding vegetation, and permanent sun exposure. Non-eutrophic conditions with both emergent and submergent vegetation at pond margins.
Distribution
North America: widespread across Canada (Alberta, British Columbia, Manitoba, New Brunswick, Newfoundland and Labrador, Nova Scotia, Northwest Territories, Ontario, Prince Edward Island, Quebec, Saskatchewan) and the United States (Arizona, California, Colorado, Connecticut, Florida, Georgia, Idaho, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Dakota, Nebraska, New Jersey, New Hampshire, New Mexico, New York, Nevada, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Texas, Utah, Vermont, Washington, Wisconsin, Wyoming). Caribbean: Bahamas, Cayman Islands, Cuba, Puerto Rico. Also recorded from Miquelon.
More Details
Taxonomic history
Originally described as Philydrus hamiltoni by Horn in 1890, later transferred to the Enochrus. Currently classified in subgenus Lumetus.
Caribbean expansion
The 2010 Cuban record documented the first Caribbean island occurrence, significantly expanding the known range beyond North America. Specimens were collected in two coastal localities in southeastern Cuba.