Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Species Liodessus obscurellus

American River water beetle - Liodessus obscurellus Dytiscid - Liodessus obscurellus Dytiscid - Liodessus obscurellus Least Diver - Liodessus obscurellus Roseville-0BG.J.2020.04 - Liodessus obscurellus Belden-J.2021.49 - Liodessus obscurellus Belden-J.2021.50 - Liodessus obscurellus Belden-J.2021.50 - Liodessus obscurellus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Adephaga (Ground and Water Beetles)
Family Dytiscidae (Predaceous Diving Beetles)
Subfamily Hydroporinae
Tribe Bidessini
Genus Liodessus
Species obscurellus (Liodessus obscurellus)
Synonyms and other taxonomic changes
Hydroporus obscurellus LeConte 1851
Explanation of Names
Liodessus obscurellus (LeConte)
1.6-2.2 mm(1)
Reliably separated from L. affinis by aedeagus only(1)
AK-CA to IN-LA; nw Mexico(1)
shallow, sun-warmed habitats(1)
Often comes in numbers to lights(1)
Print References
Internet References
Type - MCZ, Harvard
Works Cited
1.Predaceous Diving Beetles (Coleoptera: Dytiscidae) of the Nearctic Region, with emphasis on the fauna of Canada and Alaska
D.J. Larson, Y. Alarie, and R.E. Roughley. 2001. NRC 43253.
2.Revision of the Nearctic Liodessus affinis (Say 1823) species group (Coleoptera: Dytiscidae, Hydroporinae, Bidessini).
Miller, K.B. 1998. Entomologica Scandinavica 29(3): 281-314. 1998. Entomologica Scandinavica.