Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

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Thermonectus basillaris galapagoensis Van Dyke, 1953

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Thermonectus basillaris galapagoensis San Cristóbal Island. Specimen housed in the ICCDRS collection (ICCDRS 4083). Photo: María Sol Herrera, CDF, 2024.
Thermonectus basillaris galapagoensis San Cristóbal Island. Specimen housed in the ICCDRS collection (ICCDRS 4083). Photo: María Sol Herrera, CDF, 2024.

Aquatic predator; littoral to evergreen shrub zone; January-July, September-October; in Brackish coastal pools and highland ponds, at lights, FIT.

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Arthropoda

Class
Insecta

Order
Coleoptera

Suborder
Adephaga

Family
Dytiscidae

Section
Thermonectini

Genus
Thermonectus

Species
basillaris

Subspecies
galapagoensis

Taxon category: Species with Infraspecific Taxa

Syn.: Acilius incisus C. Waterhouse, 1877, A. basillaris Mutchler, 1925 (not Harris), fide Peck (2006)

Origin: Endemic

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

Distribution: Baltra, Floreana, Isabela, San Cristóbal, Santa Cruz

References

  • Franz, H. (1985) Beitrag zur Kenntnis der Koleopterenfauna der Galapagos-Inseln. Österr. Akad. Wissensch. Mathem.-naturw. Kl., Abt. I, 194(1-5): 73-124.
  • Gerecke, R. Peck, S.B. & Pehofer, H.E. (1995) The invertebrate fauna of the inland waters of the Galápagos Archipelago (Ecuador) - a limnological and zoogeographical summary. Arch. Hydrobiol./ Suppl. 107(2): 113-147.
  • Linsley, E.G. Usinger, R.L. (1966) Insects of the Galápagos Islands. Proceedings of the California Academy of Sciences Fourth Series 33(7): 113-196.
  • Peck, S.B. (2006) The Beetles of the Galápagos Islands, Ecuador: Evolution, Ecology, and Diversity (Insecta: Coleoptera) NRC Research Press, Ottawa, Ontario, Canada. 314 pp.
  • Peck, S.B. Kukalová-Peck, J. (1990) Origin and biogeography of the beetles (Coleoptera) of the Galápagos Archipelago, Ecuador. Can. J. Zool. 68(8): 1617-1638.
  • Peck, S.B. Balke, M. (1993) A synopsis of the Dytiscidae of the Galapagos Islands, Ecuador, with a decription of Rhantus galapagoensis sp. nov. (Coleoptera: Dytiscidae). The Canadian Entomologist 125: 259-266.
  • Van Dyke, E.C. (1953) The Coleoptera of the Galapagos Islands. Occasional Papers of the California Academy of Sciences 22: 1-181.

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This page should be cited as follows:

"Galapagos Species Database, Thermonectus basillaris galapagoensis", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=7004. Accessed 31 October 2026.