Megadytes

Life-forms

Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Ordo: Coleoptera
Subordo: Adephaga

Familia: Dytiscidae
Subfamilia: Dytiscinae
Tribus: Cybistrini
Genus: Megadytes
Species:
Name

Megadytes Sharp, 1882

References

Ferreira, N., jr.; Nicolini, L.B.; Nessimian, J.L. 2006: Description of the third instar larva of Megadytes latus (Fabricius) (Coleoptera, Dytiscidae), with an identification key for described larvae of the genus. Revista brasileira de zoologia, 23(3): 792–795. DOI: 10.1590/S0101-81752006000300025
Michat, M.C. 2006: Descriptions of larvae of Megadytes (Coleoptera: Dytiscidae: Dytiscinae): the hypothesis of monophyletic origin revisited. European journal of entomology, 103: 831–842.
Michat, M.C. 2010: Descriptions of larvae of Megadytes (Coleoptera: Dytiscidae: Dytiscinae): The subgenera Trifurcitus and Megadytes s. str., ground plan of chaetotaxy of the genus and phylogenetic analysis. European journal of entomology, 107: 377–392.

Links

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Nomenclator Zoologicus

Megadytes is a genus of diving beetles in the family Dytiscidae. They are found in slow-moving or static freshwater habitats throughout most of the Neotropics, ranging from Florida and Mexico, through the West Indies and Central America, to South America as far south as central Argentina.[1] The adult beetles measure 1.65–4.75 cm (0.6–1.9 in) long depending on the exact species and the largest is also the largest in the family (together with certain Dytiscus).[1][2]
Species

Megadytes contains the following 21 species in 4 subgenera:[3]
Subgenus Bifurcitus:

†Megadytes ducalis Sharp, 1882
Megadytes lherminieri (Guérin-Méneville, 1829)
Megadytes magnus Trémouilles & Bachmann, 1980

Subgenus Megadytes:

Megadytes carcharias Griffini, 1895
Megadytes ecuadorius Zimmermann, 1919
Megadytes flohri Sharp, 1882
Megadytes fraternus Sharp, 1882
Megadytes guayanensis (Wilke, 1920)
Megadytes guignoti Mouchamps, 1957
Megadytes laevigatus (Olivier, 1795)
Megadytes latus (Fabricius, 1801)
Megadytes marginithorax (Perty, 1830)
Megadytes steinheili (Wehncke, 1876)

Subgenus Paramegadytes:

Megadytes australis (Germain, 1854)
Megadytes glaucus (Brullé, 1837)

Subgenus Trifurcitus:

Megadytes aubei (Wilke, 1920)
Megadytes aubei meridionalis Mouchamps, 1957
Megadytes fallax (Aubé, 1838)
Megadytes gravidus Sharp, 1882
Megadytes obesus Sharp, 1882
Megadytes perplexus Sharp, 1882
Megadytes robustus (Aubé, 1838)

The subgenus and status of these two species are unknown:

Megadytes costalis (Fabricius, 1775)
Megadytes obovatus (Kirby, 1826)

References

Miller, K.B.; J. Bergsten (2016). Diving Beetles of the World: Systematics and Biology of the Dytiscidae. pp. 107–108. ISBN 978-1-4214-2054-7.
G.N. Foster; D.T. Bilton (2014). "The Conservation of Predaceous Diving Beetles: Knowns, Unknowns and Anecdotes". In D.A. Yee (ed.). Ecology, Systematics, and the Natural History of Predaceous Diving Beetles (Coleoptera: Dytiscidae). pp. 437–462. ISBN 978-94-017-9109-0.
Nilsson, Anders N.; Hájek, Jiří (2021). "A World Catalogue of the Family Dytiscidae or the Diving Beetles (Coleoptera, Adephaga)" (PDF) (1.I.2021 ed.).