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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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Subfamily Hydroporinae

small water beetle - Hydroporus tristis Sanfilippodytes terminalis (Sharp) - Sanfilippodytes terminalis - male Hydroporus columbianus Fall - Hydroporus columbianus - male Hydroporus melsheimeri Fall - Hydroporus melsheimeri - male Neoporus sulcipennis (Fall) - Neoporus sulcipennis - female Coelambus falli Wallis - Hygrotus falli - male Tiny water bug from 12,000 ft elevation Neoporus psammodytes - male
Classification
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
Synonyms and other taxonomic changes
see(1)
Size
1-7.2 mm
Identification
Adults:
generally small
no visible scutellum
pro- and mesotarsi with 4 visible segments, although considered 'pseudotetramerous' as segment 4 is hidden beneath lobed segment 3
hind tarsal claws subequal in length
Larvae:
usually small, with a 'frontal horn', a projection of the clypeus:

2-segmented cerci/urogomphi
Range
worldwide
Works Cited
1.Phylogeny of the Hydroporinae and classification of the genus Peschetius Guignot, 1942 (Coleoptera: Dytiscidae)
Miller K.B., Wolfe G.W., Biström O. 2006. Insect Syst. Evol. 37: 257-279.