Water-scavenger-beetle
Guides
Enochrus hamiltoni
Enochrus hamiltoni is a water scavenger beetle in the family Hydrophilidae, originally described from Florida in 1890. The species has been recorded across much of North America, with recent documentation from Cuba representing the first Caribbean record outside the United States. It inhabits shallow, temporary ponds with muddy substrates and emergent vegetation.
Enochrus pygmaeus pectoralis
Enochrus pygmaeus pectoralis is a subspecies of water scavenger beetle in the family Hydrophilidae. It belongs to a genus of small aquatic beetles commonly found in lentic and slow-flowing lotic habitats. The subspecies designation indicates geographic variation within the widespread E. pygmaeus species complex. Like other members of the genus, it likely occupies shallow freshwater environments and exhibits the characteristic clubbed antennae and ventral swimming hairs typical of hydrophilid beetles.
Enochrus sayi
Enochrus sayi is a species of water scavenger beetle in the family Hydrophilidae. It occurs across much of eastern and central North America, with introduced populations in the Hawaiian Islands. The species inhabits freshwater aquatic environments.
Helobata larvalis
Pickerelweed Water Beetle
Helobata larvalis is a water scavenger beetle in the family Hydrophilidae, commonly known as the Pickerelweed Water Beetle. It has a broad distribution across the Americas, occurring from the United States through Central America to South America, including Caribbean islands. The species has been recorded from diverse biomes including the Cerrado of Brazil. As a member of the Acidocerinae subfamily, it inhabits aquatic or semi-aquatic environments.
Helochares maculicollis
Helochares maculicollis is a species of water scavenger beetle in the family Hydrophilidae. It was described by Mulsant in 1844. The species is found in North America, with distribution records across the eastern and central United States.
Helochares normatus
Helochares normatus is a species of water scavenger beetle in the family Hydrophilidae, first described by LeConte in 1861. It occurs in western North America and Central America, with records from the southwestern United States through Mexico to Costa Rica. Like other members of the genus, it is associated with aquatic or semi-aquatic habitats. The species is documented through limited but geographically dispersed observations.
Helochares punctatus
Helochares punctatus is a water scavenger beetle in the family Hydrophilidae, subfamily Acidocerinae. The species is native to the western Palearctic, with records from western Europe (Spain to Denmark), Morocco, and Iran. In the 2020s, it was documented as introduced and established in southwestern British Columbia, Canada, representing a notable range expansion.
Helophorus grandis
Helophorus grandis is a species of water scavenger beetle in the family Helophoridae. It has a broad geographic distribution spanning Africa, Europe, Northern Asia (excluding China), and North America. The species has been introduced to parts of Canada and the United States. It is an aquatic beetle inhabiting standing water habitats.
Helophorus lineatus
Helophorus lineatus is a species of water scavenger beetle in the family Helophoridae, distributed across eastern and central North America. It inhabits aquatic and semi-aquatic environments, typically associated with standing or slow-moving waters. The species was described by Thomas Say in 1823 and is one of approximately 180 species in the genus Helophorus.
Helophorus nitiduloides
Speckled Water Scavenger
Helophorus nitiduloides is a species of water scavenger beetle in the family Helophoridae, a family containing only the genus Helophorus. The species is found in North America, with records across northern and western regions of the continent. It was described by Orchymont in 1945.
Helophorus orientalis
Helophorus orientalis is a species of water scavenger beetle in the family Helophoridae. It has a broad geographic distribution spanning Europe, Northern Asia (excluding China), North America, and Southern Asia. The species was described by Motschulsky in 1860. Like other members of the genus Helophorus, it is associated with aquatic and semi-aquatic habitats.
Helophorus tuberculatus
Helophorus tuberculatus is a Holarctic species of water scavenger beetle in the family Helophoridae. It is distributed across northern Europe, Russia, northern Asia, and North America. The species inhabits aquatic environments and is part of a genus known for species-specific pronotal granulation that aids identification. Like other Helophorus species, it is presumed to have terrestrial predaceous larvae.
Hemiosus
Hemiosus is a genus of water scavenger beetles in the family Hydrophilidae, tribe Berosini. The genus was established by Sharp in 1882. Species within this genus are found in the Neotropical region, particularly in the Andes of Colombia. Recent taxonomic work has described new species based on detailed examination of male genitalia and other morphological features.
Hemiosus exilis
Hemiosus exilis is a species of water scavenger beetle in the family Hydrophilidae, first described by John Lawrence LeConte in 1852. It belongs to the tribe Berosini within the subfamily Hydrophilinae. The species has been recorded from the southwestern United States (Arizona and Texas) and Mexico. As a member of the genus Hemiosus, it is associated with aquatic or semi-aquatic habitats, though specific ecological details for this species remain poorly documented in available literature.
Hydrobiomorpha
Hydrobiomorpha is a genus of water scavenger beetles in the family Hydrophilidae, established by Blackburn in 1888. The genus contains 56 extant described species distributed across tropical and subtropical regions, with additional fossil species known from the Cenozoic. Members are aquatic beetles associated with freshwater habitats.
Hydrochara obtusata
Hydrochara obtusata is a species of water scavenger beetle in the family Hydrophilidae, found across northern North America. The species was originally described as Hydrophilus obtusatus by Thomas Say in 1823, with a neotype designated in a 1980 revision of the genus Hydrochara. It belongs to a genus of 21 recognized species of aquatic beetles.
Hydrochus granulatus
Hydrochus granulatus is a species of water scavenger beetle in the family Hydrochidae. The species was described by Blatchley in 1910 and is known from North America, with records from both the United States and Canada. It is sometimes treated as a member of the family Hydrophilidae in alternative classifications.
Hydrochus jaechi
Hydrochus jaechi is a small water scavenger beetle described in 1995 from the southeastern United States. The species belongs to the family Hydrochidae, a group of minute beetles associated with aquatic and semi-aquatic habitats. Known from scattered records across Florida, Louisiana, Mississippi, and Texas, it remains poorly documented in the scientific literature.
Hydrochus simplex
Hydrochus simplex is a small water scavenger beetle in the family Hydrochidae, a group sometimes treated as a subfamily within Hydrophilidae. The species was described by John Lawrence LeConte in 1855 and is documented from the southeastern United States and the Bahamas. Like other hydrochids, it occupies aquatic or semi-aquatic habitats.
Hydrophilus ensifer
Hydrophilus ensifer is a large water scavenger beetle in the family Hydrophilidae, distributed throughout the Americas from Argentina to the southern United States. Adults typically measure 30–37 mm in length, making them among the largest aquatic insects. Two subspecies are recognized: H. e. ensifer and H. e. duvali, though their distinguishing characteristics remain poorly understood.
Hydrophilus insularis
Hydrophilus insularis is a water scavenger beetle in the family Hydrophilidae. It is distributed across a broad geographic range from northern South America through the Caribbean, Central America, and Mexico into the southern United States. The species is aquatic and belongs to a genus known for scavenging behavior in freshwater habitats.
Laccobius agilis
Agile Laccobius Scavenger
Laccobius agilis is a species of water scavenger beetle in the family Hydrophilidae. It is native to North America and has been recorded across a broad geographic range including much of Canada and the United States. The species is one of approximately 200 described species in the genus Laccobius, which are primarily associated with aquatic and semi-aquatic habitats. Observations of this species are relatively sparse, with limited detailed ecological information available in published literature.
Laccobius borealis
Laccobius borealis is a species of water scavenger beetle in the family Hydrophilidae. It has been recorded across northern and western North America, from Alaska and Canada through the western United States to Mexico. The species belongs to a genus of small aquatic beetles commonly found in freshwater habitats.
Laccobius spangleri
A small water scavenger beetle in the family Hydrophilidae, known from eastern and central North America. Adults are associated with aquatic and semi-aquatic habitats. The species is one of approximately 50 Laccobius species worldwide, with most occurring in the Northern Hemisphere.
Limnohydrobius
Limnohydrobius is a genus of water scavenger beetles in the family Hydrophilidae, tribe Hydrobiusini. The genus was established by Reitter in 1909 and contains species associated with freshwater habitats. Members of this genus are small to medium-sized hydrophilid beetles with the characteristic clubbed antennae of the family. The genus is distinguished from related hydrobiusine genera by specific features of the maxillary palps and genitalia.
Limnohydrobius tumidus
Limnohydrobius tumidus is a species of water scavenger beetle in the family Hydrophilidae, described by John Lawrence LeConte in 1855. It is a small aquatic beetle distributed across the eastern and central United States. The species belongs to the tribe Hydrobiusini, which includes aquatic beetles associated with freshwater habitats. Records indicate it has been collected from Maine to Florida and west to Illinois and Indiana.
Megasternum
Megasternum is a genus of small water scavenger beetles in the family Hydrophilidae, tribe Megasternini. These beetles are associated with decomposing organic matter in moist or aquatic environments. The genus was established by Mulsant in 1844 and occurs primarily in the Palearctic region.
Oosternum costatum
Oosternum costatum is a species of water scavenger beetle in the family Hydrophilidae. It is a small beetle found in North America, with records from the eastern and central United States and Mexico. The species was described by John Lawrence LeConte in 1855.
Oosternum pubescens
Oosternum pubescens is a species of water scavenger beetle in the family Hydrophilidae, described by John Lawrence LeConte in 1855. It belongs to the subfamily Sphaeridiinae, a group of small to minute beetles often associated with moist or aquatic environments. The species is known from eastern and central North America, with records spanning from the northeastern United States through the Midwest and south to Florida and Texas. Like other members of its genus, it is presumed to inhabit moist microhabitats, though detailed ecological studies remain limited.
Paracymus confluens
Paracymus confluens is a species of water scavenger beetle in the family Hydrophilidae, described by Wooldridge in 1966. It is a small aquatic beetle found in freshwater habitats across parts of North America. Like other members of the genus Paracymus, it is associated with aquatic environments and contributes to nutrient cycling as a detritivore.
Paracymus nanus
Paracymus nanus is a species of water scavenger beetle (family Hydrophilidae) described by Fall in 1910. The species occurs in freshwater habitats across parts of the southeastern United States and the Caribbean region. As a member of the genus Paracymus, it belongs to a group of small aquatic beetles commonly known as water scavenger beetles that inhabit various freshwater environments.
Paracymus subcupreus
Paracymus subcupreus is a water scavenger beetle in the family Hydrophilidae. The species was described by Thomas Say in 1825. It is known from North America with records spanning Canada, the United States, and Mexico.
Pelosoma prosternale
Pelosoma prosternale is a water scavenger beetle in the family Hydrophilidae, first described by Sharp in 1882. It belongs to the subfamily Sphaeridiinae, a group often associated with moist or decaying organic matter. The species is documented from parts of North and Central America.
Tropisternus collaris
collared water scavenger beetle
Tropisternus collaris is a species of water scavenger beetle in the family Hydrophilidae. It is found across a broad geographic range including the Caribbean, North America, and South America. The species was described by Fabricius in 1775, originally as Hydrophilus collaris. Several subspecies have been recognized, including T. c. collaris, T. c. mexicanus, T. c. proximus, T. c. striolatus, and T. c. viridis.
Tropisternus columbianus
water scavenger beetle
Tropisternus columbianus is a water scavenger beetle in the family Hydrophilidae. It is known to produce sound through stridulation, a behavior studied in western Oregon populations alongside congeneric species. The species occurs across western North America and has been recorded in aquatic and semi-aquatic habitats.
Tropisternus fuscitarsis
Tropisternus fuscitarsis is a species of water scavenger beetle in the family Hydrophilidae, first described by Sharp in 1882. The species has been recorded from Mexico, Central America, and South America including Brazil and Uruguay. As a member of the genus Tropisternus, it is associated with aquatic and semi-aquatic habitats. The specific epithet "fuscitarsis" refers to dark or dusky tarsi.
Tropisternus lateralis nimbatus
Tropisternus lateralis nimbatus is a subspecies of water scavenger beetle in the family Hydrophilidae. It colonizes temporary playa wetlands on the Southern High Plains of Texas during flood periods, arriving from surrounding aquatic habitats via aerial dispersal. The subspecies has been documented across a broad geographic range including North, Central, and South America, as well as Caribbean islands.
Tropisternus mixtus
Tropisternus mixtus is a species of water scavenger beetle in the family Hydrophilidae, first described by John Lawrence LeConte in 1855. It is distributed across eastern and central North America, with records from Canada and the United States. Like other members of its genus, it is associated with aquatic or semi-aquatic habitats. The species is relatively poorly documented in scientific literature compared to some congeners.
Tropisternus natator
Tropisternus natator is a species of water scavenger beetle in the family Hydrophilidae. It occurs across eastern and central North America, from southern Canada through the eastern United States. The species inhabits aquatic environments and was described by d'Orchymont in 1938.
Tropisternus sublaevis
Tropisternus sublaevis is a species of water scavenger beetle in the family Hydrophilidae. The species was described by John Lawrence LeConte in 1855. It is distributed across western and central North America, with records from the United States and Mexico. The species belongs to the subgenus Tropisternus (Tropisternus) and has been subject to some taxonomic confusion, with a later homonym described by Blatchley in 1910.