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

Interested in a 2022 BugGuide gathering in New Mexico?

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

National Moth Week 2020 photos of insects and people.

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Previous events


Family Hydrophilidae - Water Scavenger Beetles

Phylum Arthropoda - Arthropods
Subphylum Hexapoda - Hexapods
Class Insecta - Insects
Order Coleoptera - Beetles
Suborder Polyphaga - Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles
No Taxon Series Staphyliniformia
Superfamily Hydrophiloidea - Water Scavenger and Clown Beetles
Family Hydrophilidae - Water Scavenger Beetles

Subfamily Acidocerinae
Genus Helobata
Species larvalis - Helobata larvalis
Genus Helochares
Species normatus - Helochares normatus
Species maculicollis - Helochares maculicollis
Genus Novochares
Species sallaei - Novochares sallaei
Subfamily Chaetarthriinae
Tribe Anacaenini
Genus Anacaena
Species limbata - Anacaena limbata
Species lutescens - Anacaena lutescens
Species signaticollis - Anacaena signaticollis
Genus Crenitis
Species maculifrons - Crenitis maculifrons
Species morata - Crenitis morata
Genus Crenitulus
Species suturalis - Crenitulus suturalis
Genus Chaetarthria
Species ochra - Chaetarthria ochra
Species nigrella - Chaetarthria nigrella
Species pallida - Chaetarthria pallida
Subfamily Enochrinae
Genus Cymbiodyta
Species acuminata - Cymbiodyta acuminata
Species bifidus - Cymbiodyta bifidus
Species dorsalis - Cymbiodyta dorsalis
Species minima - Cymbiodyta minima
Species pacifica - Cymbiodyta pacifica
Species vindicata - Cymbiodyta vindicata
Genus Enochrus
Species blatchleyi - Enochrus blatchleyi
Species californicus - Enochrus californicus
Species cinctus - Enochrus cinctus
Species consors - Enochrus consors
Species consortus - Enochrus consortus
Species diffusus - Enochrus diffusus
No Taxon fimbriatus/interruptus group
Species hamiltoni - Enochrus hamiltoni
Species ochraceus - Enochrus ochraceus
Species pygmaeus - Enochrus pygmaeus
Species sayi - Enochrus sayi
Subfamily Hydrophilinae
Tribe Berosini
Genus Berosus
Species aculeatus - Berosus aculeatus
Species exiguus - Berosus exiguus
Species fraternus - Berosus fraternus
Species hatchi - Berosus hatchi
Species infuscatus - Berosus infuscatus
Species miles - Berosus miles
Species moerens - Berosus moerens
Species ordinatus - Berosus ordinatus
Species pantherinus - Berosus pantherinus
Species peregrinus - Berosus peregrinus
Species pugnax - Berosus pugnax
Species sayi - Berosus sayi
Species youngi - Berosus youngi
Genus Derallus
Species altus - Derallus altus
Genus Hemiosus
Species exilis - Hemiosus exilis
Tribe Hydrobiusini
Genus Ametor
Species scabrosus - Ametor scabrosus
Species latus - Ametor latus
Genus Hydrobius
Species fuscipes - Hydrobius fuscipes
Genus Limnohydrobius
Species melaenus - Limnohydrobius melaenus
Species tumidus - Limnohydrobius tumidus
Genus Sperchopsis
Species tessellata - Sperchopsis tessellata
Tribe Hydrophilini
Genus Hydrobiomorpha
Species casta - Hydrobiomorpha casta
Genus Hydrochara
Species brevipalpis - Hydrochara brevipalpis
Species leechi - Hydrochara leechi
Species lineata - Hydrochara lineata
Species obtusata - Hydrochara obtusata
Species occulta - Hydrochara occulta
Species rickseckeri - Hydrochara rickseckeri
Species soror - Hydrochara soror
Species spangleri - Hydrochara spangleri
Genus Hydrophilus - Giant Water Scavenger Beetles
Species ensifer - Hydrophilus ensifer
Species insularis - Hydrophilus insularis
Species ovatus - Hydrophilus ovatus
Species triangularis - Giant Black Water Beetle
Genus Tropisternus
Species affinis - Tropisternus affinis
Species blatchleyi - Tropisternus blatchleyi
Species collaris - Tropisternus collaris
Species columbianus - Tropisternus columbianus
Species glaber - Tropisternus glaber
Species lateralis - Tropisternus lateralis
Subspecies limbalis - Tropisternus lateralis limbalis
Subspecies nimbatus - Tropisternus lateralis nimbatus
Species mixtus - Tropisternus mixtus
Species natator - Tropisternus natator
Species quadristriatus - Tropisternus quadristriatus
Tribe Laccobiini
Genus Laccobius
Species agilis - Laccobius agilis
Species borealis - Laccobius borealis
Species cinereus - Laccobius cinereus
Subspecies columbianus - Laccobius cinereus columbianus
Species minutoides - Laccobius minutoides
Species teneralis - Laccobius teneralis
Genus Paracymus
Species confluens - Paracymus confluens
Species despectus - Paracymus despectus
Species lodingi - Paracymus lodingi
Species nanus - Paracymus nanus
Species subcupreus - Paracymus subcupreus
Subfamily Sphaeridiinae
Genus Sphaeridium
Species bipustulatum - Sphaeridium bipustulatum
Species lunatum - Sphaeridium lunatum
Species marginatum - Sphaeridium marginatum
Species scarabaeoides - Sphaeridium scarabaeoides
Tribe Coelostomatini
Genus Dactylosternum
Species abdominale - Dactylosternum abdominale
Species cacti - Dactylosternum cacti
Genus Pelosoma
Species prosternale - Pelosoma prosternale
Genus Phaenonotum
Species exstriatum - Phaenonotum exstriatum
Species minus - Phaenonotum minus
Tribe Megasternini
Genus Agna
Species capillata - Agna capillata
Genus Cercyon
No Taxon Subgenus Cercyon
Species adumbratus - Cercyon adumbratus
Species assecla - Cercyon assecla
Species cinctus - Cercyon cinctus
Species connivens - Cercyon connivens
Species fimbriatus - Cercyon fimbriatus
Species floridanus - Cercyon floridanus
Species haemorrhoidalis - Cercyon haemorrhoidalis
Species herceus - Cercyon herceus
Species impressus - Cercyon impressus
Species lateralis - Cercyon lateralis
Species limbatus - Cercyon limbatus
Species littoralis - Cercyon littoralis
Species luniger - Cercyon luniger
Species marinus - Cercyon marinus
Species mendax - Cercyon mendax
Species nevadanus - Cercyon nevadanus
Species nigriceps - Cercyon nigriceps
Species occallatus - Cercyon occallatus
Species praetextatus - Cercyon praetextatus
Species pubescens - Cercyon pubescens
Species pygmaeus - Cercyon pygmaeus
Species quisquilius - Cercyon quisquilius
Species unipunctatus - Cercyon unipunctatus
Species variegatus - Cercyon variegatus
Species versicolor - Cercyon versicolor
No Taxon Subgenus Dicyrtocercyon
Species ustulatus - Cercyon ustulatus
No Taxon Subgenus Paracercyon
Species analis - Cercyon analis
Species minusculus - Cercyon minusculus
No Taxon Subgenus Paracycreon
Species laminatus - Cercyon laminatus
No Taxon Subgenus Prostercyon
Species roseni - Cercyon roseni
Genus Cryptopleurum
Species minutum - Cryptopleurum minutum
Species subtile - Cryptopleurum subtile
Genus Deltostethus
Species columbiensis - Deltostethus columbiensis
Genus Megasternum
Species concinnum - Megasternum concinnum
Species obscurum - Megasternum obscurum
Species posticatum - Megasternum posticatum
Genus Oosternum
Species attacomis - Oosternum attacomis
Species costatum - Oosternum costatum
Species pubescens - Oosternum pubescens
Genus Tectosternum
Species naviculare - Tectosternum naviculare
No Taxon Unidentified Immature Stages