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Superfamily Byrrhoidea - Pill, Water and Toe-winged Beetles

Phylum Arthropoda - Arthropods
Class Insecta - Insects
Order Coleoptera - Beetles
Suborder Polyphaga - Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles
Superfamily Byrrhoidea - Pill, Water and Toe-winged Beetles

Family Byrrhidae - Pill Beetles
Genus Amphicyrta
Species dentipes - Amphicyrta dentipes
Genus Byrrhus
Species americanus - Byrrhus americanus
Species concolor - Byrrhus concolor
Species tesselatus - Byrrhus tesselatus
Genus Chaetophora
Species spinosa - Chaetophora spinosa
Genus Cytilus
Species alternatus - Cytilus alternatus
Genus Porcinolus
Species undatus - Porcinolus undatus
Genus Simplocaria
Species semistriata - Simplocaria semistriata
Family Elmidae - Riffle Beetles
Genus Dubiraphia
Species vittata - Dubiraphia vittata
Genus Heterelmis
Species comalensis - Comal Springs Riffle Beetle
Genus Hexacylloepus
Species ferrugineus - Rusty Elmid
Genus Lara
Species avara - Lara avara
Genus Macrelmis
Genus Macronychus
Species glabratus - Macronychus glabratus
Genus Microcylloepus
Species pusillus - Microcylloepus pusillus
Genus Optioservus
Species quadrimaculatus - Optioservus quadrimaculatus
Species trivittatus - Optioservus trivittatus
Species castanipennis - Optioservus castanipennis
Genus Ordobrevia
Species nubifera - Ordobrevia nubifera
Genus Promoresia
Species elegans - Promoresia elegans
Genus Stenelmis
Species bicarinata - Stenelmis bicarinata
Species cheryl - Stenelmis cheryl
Species crenata - Riffle Beetle
Species mera - Stenelmis mera
Species mirabilis - Stenelmis mirabilis
Species quadrimaculata - Stenelmis quadrimaculata
Species sandersoni - Stenelmis sandersoni
Genus Zaitzevia
Species parvula - Zaitzevia parvula
Family Dryopidae - Long-toed Water Beetles
Genus Dryops
Species arizonensis - Dryops arizonensis
Genus Helichus
Species striatus - Helichus striatus
Genus Pelonomus
Species obscurus - Pelonomus obscurus
Genus Postelichus
Genus Stygoparnus
Species comalensis - Comal Springs Dryopid Beetle
Family Lutrochidae - Travertine Beetles
Genus Lutrochus
Species laticeps - Lutrochus laticeps
Family Limnichidae - Minute Marsh-loving Beetles
Genus Eulimnichus
Species ovatus - Eulimnichus ovatus
Species ater - Eulimnichus ater
Genus Limnichites
Species punctatus - Limnichites punctatus
Genus Throscinus
Species schwarzii - Throscinus schwarzii
Family Heteroceridae - Variegated Mud-loving Beetles
Genus Lanternarius
Species mollinus - Lanternarius mollinus
Genus Lapsus
Species tristis - Lapsus tristis
Genus Heterocerus
Species collaris - Heterocerus collaris
Genus Neoheterocerus
Genus Peditatus
Species schwarzi - Peditatus schwarzi
Genus Tropicus
Species pusillus - Tropicus pusillus
Family Psephenidae - Water Penny Beetles
Genus Ectopria
Species nervosa - Ectopria nervosa
Species leechi - Ectopria leechi
Species thoracica - Ectopria thoracica
Genus Psephenus
Species texanus - Psephenus texanus
Species herricki - Water Penny Beetle
Family Ptilodactylidae - Toe-winged Beetles
Genus Ptilodactyla
Species carinata - Ptilodactyla carinata
Species serricollis - Ptilodactyla serricollis
Family Chelonariidae - Turtle Beetles
Genus Chelonarium
Species lecontei - Chelonarium lecontei
Family Eulichadidae - Forest Stream Beetles
Genus Stenocolus
Species scutellaris - Stenocolus scutellaris
Family Callirhipidae - Callirhipid Cedar Beetles
Genus Zenoa
Species picea - Zenoa picea