Malandryinae is a subfamily of false darkling beetles within the family Malandryidae. Members are primarily associated with decaying wood and forest habitats. The subfamily contains numerous genera distributed across the Holarctic region, with greatest diversity in temperate forests. Adults and larvae are generally saproxylic, contributing to wood decomposition processes.
Malporus is a genus of antlike flower beetles (family Anthicidae) containing at least four described species. Members of this genus exhibit the characteristic ant-mimicking body form common to many Anthicidae, with a narrow waist-like constriction between the pronotum and elytra. The genus was established by Casey in 1895 and includes both widespread North American species and more recently described taxa.
antlike flower beetle
Malporus cinctus is a species of antlike flower beetle in the family Anthicidae, first described by Thomas Say in 1824. The species is found in North America, with records from Canadian provinces including Manitoba, Ontario, and Saskatchewan. Antlike flower beetles in this family are generally small, elongated beetles that often exhibit ant-mimicking morphology and behavior. Very little specific biological information is documented for this particular species.
Malporus formicarius is a species of antlike flower beetle in the family Anthicidae. It is found in North America, with records from Canada including Manitoba, New Brunswick, and Nova Scotia. The species is characterized by its ant-like morphology, a trait common among anthicid beetles. It is not a significant agricultural pest and should not be confused with Cylas formicarius, the sweetpotato weevil.
Malthinus difficilis is a species of soldier beetle in the family Cantharidae, first described by LeConte in 1851. It is found in North America. Soldier beetles in this family are typically soft-bodied beetles with elytra that are more flexible than those of most beetles.
Malthinus texanus is a species of soldier beetle in the family Cantharidae. It was described by Wittmer in 1981. The species is recorded from North America. Soldier beetles in this family are generally soft-bodied beetles with flexible elytra.
soldier beetle
Malthodes spado is a species of soldier beetle in the family Cantharidae, described by John Lawrence LeConte in 1866. It belongs to the subfamily Malthininae and tribe Malthodini. The species is known to occur in North America. Members of the genus Malthodes are generally small soldier beetles with reduced elytra.
Malthomethes oregonus is a species of beetle in the family Omethidae, described by Fender in 1975. The genus Malthomethes belongs to a small family of elateroid beetles whose members are poorly studied. This species is known from very few records, with only one observation documented in iNaturalist. The specific epithet "oregonus" suggests a type locality in Oregon, though comprehensive distribution data remains limited.
Manda is a genus of spiny-legged rove beetles (family Staphylinidae) established by Blackwelder in 1952. The genus belongs to the subfamily Oxytelinae and tribe Planeustomini. At least two species have been described within this genus. Rove beetles in this genus are characterized by their elongated bodies and reduced elytra that expose much of the abdomen. The genus has been recorded from northern Europe including Denmark, Norway, and Sweden.
Mannophorus forreri is a longhorn beetle in the family Cerambycidae, described by Henry Walter Bates in 1885. It belongs to the tribe Trachyderini, a group known for often brightly colored and patterned species. The species is rarely encountered in collections and appears to have a restricted distribution in the southwestern United States and Mexico. Field observations indicate adults are active in early autumn and visit flowers of yellow composites in mountainous areas of Arizona.
clown beetle
Margarinotus egregius is a species of clown beetle in the family Histeridae, described by Casey in 1916. It is a small predatory beetle found in northeastern North America. Like other histerid beetles, it likely inhabits decaying organic matter where it preys on insect larvae. The species appears to be relatively uncommon, with limited observational records.
clown beetle
Margarinotus faedatus is a species of clown beetle in the family Histeridae. It is found in North America, with records from eastern Canada and the eastern United States.
clown beetle
Margarinotus guttifer is a species of clown beetle (family Histeridae) described by Horn in 1862. The species is known from limited occurrence records in North America, with documented populations in Canada (Alberta) and the United States (Nebraska, Texas). Like other members of Histeridae, it is presumed to be associated with decomposing organic matter, though specific ecological details remain poorly documented.
Margarinotus marginicollis is a species of clown beetle in the family Histeridae. It is found in North America, with distribution records from Canada and the United States. The species was described by J.E. LeConte in 1845.
clown beetle
Margarinotus stygicus is a species of clown beetle in the family Histeridae. It is found in North America, with records from Canada and the United States. The species was described by J.E. LeConte in 1845. Like other histerid beetles, it is likely associated with decaying organic matter, though specific ecological details remain poorly documented.
Martineziana is a genus of aphodiine dung beetles in the family Scarabaeidae, containing six described species. These beetles are classified within the tribe Eupariini, a group of small to medium-sized scarabs often associated with decomposing organic matter. The genus was established by Chalumeau & Özdikmen in 2006. Species are distributed across the Neotropical region, with records from Argentina and other South American localities.
Mastoremus is a genus of small beetles in the family Anthicidae, described by Casey in 1895. Members of this genus are part of the ant-like flower beetle group, characterized by their compact bodies and relatively long legs. The genus is recognized within the diverse Anthicidae family, though specific biological details remain poorly documented in available literature.
Matheteus theveneti is a small beetle species in the family Omethidae, described by John Lawrence LeConte in 1874. The species is known from North America, with 116 observations recorded on iNaturalist. Omethidae is a small family of beetles commonly referred to as false soldier beetles, though specific biological details for this particular species remain poorly documented in scientific literature.
Matus bicarinatus is a predaceous diving beetle in the family Dytiscidae. It belongs to the subfamily Matinae, a group of specialized diving beetles. The species is documented from North America, with records from Ontario, Canada. Knowledge of its biology remains limited due to few observations.
Mauroniscidae is a small family of cleroid beetles containing approximately 30 described species across five or six genera. The family was erected by Majer in 1995, having been previously classified as part of Melyridae. All known species are restricted to the Americas. Biological details remain largely unknown due to limited study.
Stem Miner Weevil
Mecinus pyraster is a small weevil species in the family Curculionidae, native to the Palaearctic region and introduced to North America. The species has undergone taxonomic revision, with three junior synonyms synonymized under it. As a member of the genus Mecinus, it likely exhibits the stem-mining larval habit characteristic of this group, though specific biological details remain poorly documented in accessible literature.
Mecomycter is a genus of beetles in the family Mauroniscidae, historically placed in Melyridae. The genus contains three described species found in western North America. Species were described between 1882 and 1997.
Mecomycter majeri is a species of beetle in the family Mauroniscidae, a small family of soft-bodied plant beetles (Cucujoidea). The species is known from a single iNaturalist observation, indicating it is either rare, poorly sampled, or has a restricted distribution. Members of Mauroniscidae are generally associated with decaying plant material and fungal habitats.
monoceros beetles
Mecynotarsus is a genus of anthicid beetles comprising approximately 19 described species. At least one species, M. tenuipes, is specialized for life in sandy substrates and possesses a large pronotal horn used for digging and locomotion in loose sand. The genus belongs to the family Anthicidae, commonly known as ant-like flower beetles or monoceros beetles.
monoceros beetle
Mecynotarsus candidus is a species of monoceros beetle in the family Anthicidae. It was described by John Lawrence LeConte in 1875. The species occurs in Central America and North America, with records including the Canadian province of Alberta. As a member of Anthicidae, it belongs to a family commonly known as ant-like flower beetles, though specific ecological details for this species remain poorly documented.
Megacerus impiger is a leaf beetle species in the family Chrysomelidae. It occurs in Central America and North America. The genus Megacerus belongs to the subfamily Bruchinae, commonly known as seed beetles, though this species' specific biology remains poorly documented.
pleasing fungus beetles
Megalodacne is a genus of large fungivorous beetles in the family Erotylidae, distinguished by their size (9–22 mm), large eyes, and distinctive color patterns of yellow, orange, or red markings on the elytra. Adults and larvae feed on hard bracket fungi, particularly Ganoderma and Fomes species. The genus was established by George Robert Crotch in 1873 and is classified in the subfamily Megalodacninae alongside Episcapha and Episcaphula. Species occur across North America, Asia, Africa, and Southeast Asia, with some exhibiting nocturnal behavior and attraction to light.
Red-banded Fungus Beetle
Megalodacne fasciata is a species of pleasing fungus beetle in the family Erotylidae, commonly known as the Red-banded Fungus Beetle. The species was described by Fabricius in 1777 and is native to North America, with documented presence in Canada (Ontario, Québec) and the United States. It belongs to a genus of beetles associated with fungal habitats.
Megalopinus lingafelteri is a species of rove beetle in the family Staphylinidae. The genus Megalopinus is known for containing relatively large species within this family, though specific information about M. lingafelteri itself is extremely limited. No observations of this species have been recorded in iNaturalist, and no published biological or ecological data are readily available. The species epithet suggests it may have been named in honor of an individual, following a common practice in coleopteran taxonomy.
Megalostomis pyropyga is a case-bearing leaf beetle in the family Chrysomelidae. It is found in Central America and North America. The species was described by Lacordaire in 1848. As a member of the case-bearing leaf beetles, it likely constructs protective cases from its own fecal material, a characteristic trait of its subfamily Cryptocephalinae.
Megapenthes angularis is a species of click beetle (family Elateridae) described by John Lawrence LeConte in 1866. Like other members of the genus Megapenthes, this species possesses the characteristic clicking mechanism that allows these beetles to right themselves when overturned. The genus Megapenthes is part of the diverse Elateridae family, which contains approximately 10,000 described species worldwide. Specific biological details for M. angularis remain poorly documented in the available literature.
Megapenthes dolosus is a species of click beetle in the family Elateridae. The genus Megapenthes is part of the diverse elaterid fauna of North America. Based on the limited available information, this species appears to be rarely encountered, with only 9 observations recorded on iNaturalist as of the source date. The specific epithet 'dolosus' (Latin for 'deceitful' or 'crafty') may allude to characteristics of the species or its type locality, though the etymology has not been formally documented in accessible literature.
Megapenthes elegans is a species of click beetle in the family Elateridae. The genus Megapenthes comprises click beetles characterized by their ability to right themselves using a prosternal process that snaps against a mesosternal groove. As a member of this genus, M. elegans possesses the family's namesake clicking mechanism. The species has been documented through limited observations, with 16 records on iNaturalist.
Megapenthes fuscus is a species of click beetle in the family Elateridae, subfamily Dendrometrinae. Members of this genus are characterized by their ability to produce an audible clicking sound through a prosternal process that snaps against a mesosternal receptacle, enabling the beetle to right itself when flipped. The species is part of a diverse group of elaterid beetles found across various habitats.
Megapenthes longicornis is a species of click beetle in the family Elateridae. The genus Megapenthes belongs to a diverse family of beetles characterized by their ability to perform a clicking/jumping mechanism using a prosternal spine and mesosternal groove. Very little specific information is documented about this particular species.
Megapenthes nigriventris is a species of click beetle (Elateridae) described by LeConte in 1884. It belongs to the genus Megapenthes, a group characterized by bioluminescent larvae commonly known as glow-worms. The species is known from western North America, with confirmed records from British Columbia, Canada. As with other members of its genus, the larvae are likely predatory and bioluminescent, though specific details for this species remain poorly documented.
Megapenthes rufilabris is a click beetle species in the family Elateridae. It belongs to a genus of click beetles characterized by their ability to right themselves using a prosternal process that snaps against a mesosternal groove. The species epithet 'rufilabris' refers to reddish mouthparts or labrum. Like other elaterids, the larvae are likely soil-dwelling and may feed on plant material or other organic matter.
Megapenthes solitarius is a click beetle (family Elateridae) described by Fall in 1934. The species is known from limited records in Canada, with confirmed observations in Alberta, New Brunswick, and Quebec. Available data suggest it is rarely encountered, with only three observations documented on iNaturalist.
Megasemum is a genus of longhorn beetles (family Cerambycidae) in the tribe Asemini, established by Kraatz in 1879. The genus includes species such as Megasemum asperum, described by LeConte in 1854. Members of this genus are classified within the subfamily Spondylidinae and are part of the diverse beetle fauna of the Chrysomeloidea superfamily. The genus has been documented in citizen science observations, with over 200 records on iNaturalist.
Sleeper's Elephant Beetle
Megasoma sleeperi is a species of rhinoceros beetle in the family Scarabaeidae. It is endemic to the Algodones Dunes of southeastern California and adjacent areas of southwestern Arizona and northwestern Mexico. Like other members of the genus Megasoma, it is among the largest beetles in North America. Males possess prominent horns used in combat with other males. The species was described by Hardy in 1972 and is named in honor of collector R. C. Sleeper.
Megataphrus tenuicornis is a species of cylindrical bark beetle in the family Zopheridae, described by Casey in 1890. It is found in North America. As a member of the genus Megataphrus, it belongs to a group of beetles characterized by their association with bark habitats. The species is rarely encountered in collections, with only 7 observations documented on iNaturalist.
Striated False Darkling Beetle
Melandrya striata is a species of false darkling beetle in the family Melandryidae, described by Thomas Say in 1824. It is distributed across much of Canada, with records from Alberta, British Columbia, Manitoba, New Brunswick, and Nova Scotia. The species is part of a family of beetles commonly associated with decaying wood and fungal habitats. As a member of the genus Melandrya, it shares the general ecology of this group, which is adapted to moist, decomposing substrates in forested environments.
A small dung beetle species in the family Scarabaeidae, native to central North America. The species name "nigricornis" refers to its black antennae. It inhabits grassland and prairie ecosystems where it contributes to nutrient cycling through dung burial. The species has been documented across a broad swath of the central United States and extends into northern Mexico.
Melanophthalma casta is a species of minute brown scavenger beetle in the family Latridiidae. The genus Melanophthalma comprises small beetles typically associated with moldy or decaying plant material. Very few documented observations of this species exist, with only one record currently available on iNaturalist. The family Latridiidae as a whole is characterized by tiny body size and association with fungal growth on damp organic substrates.
Melanophthalma inermis is a species of minute brown scavenger beetle (family Latridiidae) first described by Motschulsky in 1866. These beetles are among the smallest coleopterans, typically found in moist habitats where they feed on fungal spores and hyphae. The species is documented from eastern Canada, with records from New Brunswick, Newfoundland, Nova Scotia, and Prince Edward Island. Latridiid beetles are generally associated with decaying plant material and are common in forest floor litter and similar microhabitats.
Melanophthalma pumila is a species of minute brown scavenger beetle in the family Latridiidae. First described by LeConte in 1855 under the name Corticaria pumila, it was later transferred to the genus Melanophthalma. The species belongs to a family of small beetles commonly associated with moldy or decaying plant material. Records indicate presence in multiple Canadian provinces.
Melanophthalma simplex is a species of minute brown scavenger beetle in the family Latridiidae. The genus Melanophthalma comprises small beetles associated with fungal growth and decaying organic matter. Records for this species are sparse, with limited observational data available.
Melanophthalma villosa is a species of minute brown scavenger beetle in the family Latridiidae. This family comprises small beetles commonly known as plaster beetles or fungus beetles, typically associated with mold and fungal growth in various habitats. The species was described by Zimmermann in 1869. Like other members of Latridiidae, it is presumed to feed on fungal hyphae and spores, though specific ecological studies on this species are limited. It has been recorded across multiple Canadian provinces.
Chestnut-footed Click Beetle
Melanotus castanipes is a click beetle in the family Elateridae. It is a medium-sized species, measuring 13–19 mm in length, with a uniformly black or slightly browner head and an elongated body with tapering elytra. The species is distributed across eastern Canada and is known for its long antennae, which extend beyond the posterior margin of the pronotum. Like other click beetles, it possesses the characteristic clicking mechanism for righting itself when overturned.
Melanotus cribulosus is a species of click beetle in the family Elateridae, first described by LeConte in 1853. The genus Melanotus includes multiple species of wireworms, the soil-dwelling larval stage of click beetles, which are recognized as agricultural pests. Specific ecological and behavioral details for M. cribulosus remain poorly documented in the available literature.