Haliplidae

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Crawling water beetles
Haliplus fluviatilis
Peltodytes dispersus
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Adephaga
Superfamily: Haliploidea
Aubé, 1836
Family: Haliplidae
Aubé, 1836
Genera

The Haliplidae are a

superfamily Haliploidea. They are also known as crawling water beetles or haliplids.[1]

Description

The adults of these beetles are generally oval in shape, with a very convex upperside, and are generally 1.5–5.0 mm (0.059–0.197 in) long. They are generally yellowish to light brown in color, frequently with light and dark patterns dotted with 10 or more rows of punctures on the elytra. The family's most distinctive characteristic is the large coxal plates of the hindlegs, which are immobile (though not fused in the centerline) and extend back along the underside to cover most of the abdomen base and the hindleg trochanters and femora. They are used as air storage supplementing the air carried under the elytra.[1][2]

The

apically.[1][2]

Haliplidae

tergites of all sternal and all but the tenth (last) abdominal segments. The latter may be absent, but in the larvae of some Haliplidae it is tapering and ends in two prongs (which are not urogomphi though). The last (third) instar has functional spiracles on the mesothorax and the first to seventh abdominal segments.[2]

Ecology

Haliplids live in the aquatic vegetation around the edges of small ponds, lakes, and quiet streams. Adults are

eggs on the surface of aquatic plants, while Haliplus chews out a cavity in the plants for their eggs. There are three instars, and pupation takes place on land in a chamber constructed by the larva.[1]

Crawling water beetles are not extensively studied because their interaction with humans is minimal. Hungerford's crawling water beetle (Brychius hungerfordi) is an endangered species found only in Michigan and Ontario.[3]

Systematics

The classification of haliplids as a separate group of

entomologists believe they developed from terrestrial beetles separately from other types of water beetles. For many decades, the family was in need of revision, the last general catalog being published by A. Zimmermann in 1920. B. J. van Vondel produced an updated catalogue of the known Haliplidae taxa.[4]

Like predaceous diving beetles (

basal Adephaga.[2]

Genera

The family is not very diverse, with only five

synapomorphies in common; Haliplus is the more diverse and appears to include some minor lineages formerly considered independent genera.[2]

References

  1. ^ a b c d R. E. Roughley (2001). "Haliplidae". In Ross H. Arnett Jr. & Michael C. Thomas (ed.). American Beetles, Volume 1. CRC Press.
  2. ^ a b c d e Rolf Georg Beutel (February 25, 2008). "Haliplidae. Crawling water beetles". Tree of Life Web Project. Retrieved January 10, 2011.
  3. ^ NatureServe (7 April 2023). "Brychius hungerfordi". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 23 April 2023.
  4. ^ B. J. van Vondel (2005). "Haliplidae". In A. N. Nilsson (ed.). Volume 7. Amphizoidae, Aspidytidae, Haliplidae, Noteridae and Paelobiidae (Coleoptera, Adephaga). World Catalogue of Insects. Stenstrup: Apollo Books.
  5. ^ Haliplidae Species List at Joel Hallan's Biology Catalog. Texas A&M University. Retrieved on 10 May 2012.

External links

Wikimedia Commons has media related to Haliplidae.
Wikispecies has information related to Haliplidae.
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