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Genus Haliplus

Haliplus Haliplus canadensis Wallis - Haliplus nitens Haliplus tumidus LeConte - Haliplus tumidus Haliplus subguttatus Roberts - Haliplus subguttatus Aquatic Beetle - Haliplus immaculicollis Beetle - Haliplus immaculicollis Haliplus triopsis? - Haliplus Haliplus mimeticus - female
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga
Family Haliplidae (Crawling Water Beetles)
Genus Haliplus
Explanation of Names
Haliplus Latreille 1802
41 spp. in 5 subgenera in Nearctic, ~200 total, arranged in 11 subgenera(1)
1.75-5 mm(2)
some species have a black spot at anterior pronotal margin (vs 2 basal spots in Peltodytes); species identification often requires dissection
Larva: elongate, yellowish or brownish with small dorsal projections on first several abdominal segments, and long pointed caudal appendage
Key to spp. in (1)
throughout NA, including the arctic; worldwide except Antarctica
adults and larvae live among algae and aquatic vegetation at edges of ponds, lakes, backwaters of streams; adults may be attracted to light
adults year-round; larvae in spring
larvae feed on algae, sucking the contents of single cells with their highly specialized mandibles; adults feed on algae, chironomid eggs, oligochaete worms, small crustaceans, and hydrozoans
Life Cycle
overwinters as an adult in permanent standing water
Works Cited
1.Revision of the Nearctic Haliplidae (Coleoptera)
van Vondel B.J. 2021. Tijdschr. Entomol. 163: 101-298.
2.American Beetles, Volume I: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia
Arnett, R.H., Jr., and M. C. Thomas. (eds.). 2000. CRC Press LLC, Boca Raton, FL.