Bark-beetle
Guides
Achenomorphus corticinus
Achenomorphus corticinus is a small rove beetle (Staphylinidae) in the subfamily Paederinae. It is broadly distributed across eastern North America, with records spanning from southeastern Canada through the eastern and midwestern United States. The species inhabits forested environments and has been collected in association with bark and decaying wood. It is one of the more frequently encountered species in its genus, with over 450 observations documented on iNaturalist.
Aegialites debilis
narrow-waisted bark beetle
Aegialites debilis is a species of narrow-waisted bark beetle in the family Salpingidae, described by Mannerheim in 1853. It is found in North America, with records from Alaska and the contiguous United States. The species belongs to a small genus of beetles characterized by their constricted body form. Very little detailed biological information has been published for this species.
Alniphagus
Alniphagus is a genus of crenulate bark beetles in the family Curculionidae, comprising approximately eight described species. The genus is notable for containing hardwood-killing bark beetles, particularly Alniphagus aspericollis (the alder bark beetle), which is capable of killing live alder trees—a rarity among bark beetles, as most tree-killing species in this group specialize on conifers. Species in this genus breed in the subcortical tissues of alder trees (genus Alnus) and have been documented from western North America, Africa, and Eurasia.
Alniphagus aspericollis
alder bark beetle
Alniphagus aspericollis is a hardwood-killing bark beetle that colonizes and kills red alder (Alnus rubra) and thinleaf alder (Alnus tenuifolia). Unlike most tree-killing bark beetles that attack conifers, this species is one of the few capable of directly killing hardwood hosts. It is bivoltine in southwestern British Columbia, with principal attacks in May and a second generation from mid-July to early August. The beetle constructs maternal galleries parallel to the bole in the phloem-cambium, where larvae develop and pupate. It shows loose associations with ophiostomatoid fungi but has a consistent relationship with an undescribed Neonectria species that may function as a symbiote.
Arhopalus rusticus obsoletus
Arhopalus rusticus obsoletus is a subspecies of longhorned beetle in the family Cerambycidae. It belongs to a species complex with Holarctic distribution, occurring in both North America and Eurasia. The subspecies is associated with coniferous wood, where larvae develop under bark. Adults are active during warmer months and can be found on or near dead conifers.
Aulonium tuberculatum
Aulonium tuberculatum is a species of cylindrical bark beetle in the family Zopheridae. It was described by John Lawrence LeConte in 1863 and is known from North America. The species belongs to the genus Aulonium, a group of bark beetles characterized by their elongated, cylindrical body form.
Bitoma gracilis
Bitoma gracilis is a small beetle species in the family Zopheridae, first described by Sharp in 1894. It belongs to a genus of cylindrical bark beetles found in forested habitats. The species has been recorded from both North America and Middle America, though specific details about its biology remain poorly documented.
Boros unicolor
conifer bark beetle
Boros unicolor is a conifer bark beetle in the family Boridae, first described by Thomas Say in 1827. It is one of the few species in the small family Boridae, which is placed within the superfamily Bostrichoidea. The species is documented from North America, with records from Canada and the United States.
Bothrideres geminatus
Bothrideres geminatus is a species of dry bark beetle in the family Bothrideridae. The species is found in North America, with records from Ontario, Canada and the United States. Its larvae develop under dry bark of dead trees, where they function as parasitoids of Chrysobothris beetle larvae. The species is part of a family whose members are predominantly parasitoids of wood-boring insects.
Cactopinus
Cactopinus is a genus of bark beetles in the family Curculionidae, established by Schwarz in 1899. The genus contains over 20 described species, with distributions primarily in arid regions of southwestern North America including California and Mexico. Species in this genus are associated with cactus hosts, as indicated by the genus name. Two species, C. cactophthorus and C. mexicanus, were reclassified to the new genus Cactopinorus.
Cactopinus desertus
Cactopinus desertus is a bark beetle species in the weevil family Curculionidae, described by Bright in 1967 from California specimens. As a member of the Scolytinae subfamily, it is part of a genus containing seven species associated with cacti. The species is known from limited collections and remains poorly studied biologically.
Cactopinus pini
Cactopinus pini is a species of bark beetle in the family Curculionidae, first described by Blackman in 1938. It is endemic to North America. Like other members of the genus Cactopinus, this species is associated with coniferous hosts, specifically pines as indicated by its species epithet.
Cactopinus rhois
Cactopinus rhois is a bark beetle species in the weevil family Curculionidae, described by Blackman in 1938. It belongs to the genus Cactopinus, a group of small wood-boring beetles associated with cacti and other plants. The species is recorded from North America. As with other members of its genus, it likely develops in plant stems or trunks, though specific biological details remain poorly documented.
Carphobius
Carphobius is a genus of bark beetles in the family Curculionidae, established by M.W. Blackman in 1943. The genus comprises at least three described species of crenulate bark beetles. These beetles are associated with woody plants and belong to the diverse weevil superfamily Curculionoidea.
Carphobius arizonicus
Carphobius arizonicus is a species of crenulate bark beetle in the family Curculionidae, first described by Blackman in 1943. It is found in North America.
Carphoborus
Carphoborus is a genus of crenulate bark beetles in the family Curculionidae, containing at least 40 described species. Members of this genus are associated with coniferous forests and are recognized as forest pests in some regions. One species, Carphoborus minimus, has been studied for its potential northward range expansion in Turkey due to climate change.
Carphoborus bicornis
Carphoborus bicornis is a species of weevil in the family Curculionidae, described by Wood in 1986. The genus Carphoborus comprises bark beetles associated with coniferous trees. This species is recorded from North America. Very little published information exists regarding its specific biology or ecology.
bark-beetleweevilconifer-associatedNorth-AmericascolytinaeCurculionidaeColeopterainsectbeetleforest-pestwood-boring-beetleScolytiniCarphoborusbicornisWood-19861986provisionally-acceptedacceptedexact-matchAnimaliaArthropodaInsectaCarphoborus-bicornistaxonomyclassificationconiferforestwood-boringpesteukaryotahexapodapolyphagacucujiformiacurculionoideaCarphoborus blaisdelli
Carphoborus blaisdelli is a species of crenulate bark beetle in the family Curculionidae. It was described by J.M. Swaine in 1924. The species is known from North America. As a member of the genus Carphoborus, it belongs to a group of small bark beetles associated with coniferous trees.
Carphoborus declivis
Carphoborus declivis is a species of bark beetle in the weevil family Curculionidae, described by Wood in 1954. It belongs to the subfamily Scolytinae, commonly known as bark or ambrosia beetles. The species is known from North America.
Carphoborus frontalis
Carphoborus frontalis is a species of crenulate bark beetle described by Wood in 1954. It belongs to the family Curculionidae, the largest family of beetles. The species is distributed in North America. As a bark beetle in the subfamily Scolytinae, it likely shares the general biology of related species in boring into wood and feeding on phloem, though specific ecological details for this species remain poorly documented.
Carphoborus simplex
crenulate bark beetle
Carphoborus simplex is a species of crenulate bark beetle in the family Curculionidae, first described by LeConte in 1876. The species is found in North America and Middle America. As a bark beetle, it is part of a group known for their association with woody plants, though specific biological details for this species remain poorly documented in available literature.
Cerocephalidae
Cerocephalidae is a small family of chalcid wasps within the superfamily Chalcidoidea. The family was elevated from subfamily status within Pteromalidae in 1946 by Gahan. Most species are parasitoids of small wood-boring beetles, particularly bark beetles in the families Curculionidae (Scolytinae). The family contains 13 extant genera including Acerocephala, Cerocephala, and Theocolax, plus three fossil genera.
Chaetophloeus
Chaetophloeus is a genus of weevils in the family Curculionidae, subfamily Scolytinae, established by LeConte in 1876. The genus currently contains at least 17 species in Mexico, with three new species described from Central Mexico in 2022: C. psittacanthi, C. woodi, and C. zapotecanus. Members exhibit sexual dimorphism in the fifth abdominal ventrite, a newly recognized diagnostic character.
Chaetophloeus heterodoxus
Chaetophloeus heterodoxus is a species of bark beetle in the subfamily Scolytinae. It was first described by Casey and later formally named by Wood & Bright in 1992. The species was recently documented in Mexico for the first time, extending its known range beyond previously recorded North American localities.
Charaphloeus adustus
lined flat bark beetle
Charaphloeus adustus is a species of lined flat bark beetle in the family Laemophloeidae, described by LeConte in 1854. The species is known from North America with confirmed records in the Canadian provinces of Manitoba, Ontario, and Québec. Like other members of Laemophloeidae, it is associated with bark habitats. The genus Charaphloeus contains multiple species that are morphologically similar and require careful examination for identification.
Charaphloeus convexulus
lined flat bark beetle
Charaphloeus convexulus is a species of lined flat bark beetle in the family Laemophloeidae, a group of small beetles adapted for living under bark. The species is found in North America, with records from Canada (New Brunswick, Nova Scotia, and Ontario). As with other members of Laemophloeidae, it is presumed to inhabit dead or dying wood where it likely feeds on fungal hyphae or other microorganisms, though specific biological details remain poorly documented.
Charaphloeus flavosignatus
lined flat bark beetle
Charaphloeus flavosignatus is a species of lined flat bark beetle in the family Laemophloeidae, a group characterized by their dorsoventrally flattened bodies adapted for living under bark. The species was described by Schäffer in 1910. It is known from North America. Like other members of its family, it likely inhabits dead or dying wood where it feeds on fungal hyphae.
Charaphloeus unnamed
Charaphloeus unnamed refers to an undescribed species within the genus Charaphloeus, a group of small, flattened beetles in the family Laemophloeidae (lined flat bark beetles). The genus Charaphloeus contains multiple species, some of which remain formally undescribed in scientific literature. These beetles are typically associated with dead or decaying wood and bark habitats. The specific epithet "unnamed" indicates this taxon has been recognized as distinct but has not yet received a formal scientific description or species name.
Cheiropachus
Cheiropachus is a genus of parasitoid wasps in the family Pteromalidae, first described by Westwood in 1829. Species within this genus are known to parasitize bark beetles (Scolytidae), with C. quadrum being the most studied species due to its role as a biological control agent of olive bark beetles in southern Europe. The genus occurs in Europe and North America, with at least ten recognized species.
Chramesus
crenulate bark beetles
Chramesus is a genus of bark beetles in the family Curculionidae, established by J.L. LeConte in 1868. The genus comprises at least 100 described species, commonly referred to as crenulate bark beetles. Members of this genus are small weevils that inhabit wood-boring ecological niches. The genus has been documented in North America, with records from the United States including Vermont.
Chramesus chapuisii
Chramesus chapuisii is a species of weevil in the family Curculionidae, described by LeConte in 1876. The genus Chramesus comprises bark beetles, a group of small weevils that tunnel beneath tree bark. This species is known from very few documented observations, with only two records on iNaturalist. Most species in this genus are associated with coniferous trees.
Chramesus mimosae
Chramesus mimosae is a species of crenulate bark beetle in the family Curculionidae, first described by Blackman in 1938. It belongs to a genus of small bark beetles that colonize woody plants. The species is known from limited records in North and Middle America.
Chramesus subopacus
Chramesus subopacus is a crenulate bark beetle in the family Curculionidae, described by C.F.A. Schaeffer in 1908. The species is distributed across North America and Middle America. As a member of the genus Chramesus, it belongs to a group of small bark beetles associated with woody vegetation.
Cnesinus
Cnesinus is a genus of bark beetles in the subfamily Scolytinae, family Curculionidae. Species occur across the Americas from North America through Central America to South America. The genus was established by J.L. LeConte in 1868. As a member of Scolytinae, species in this genus are associated with woody plants and are likely to be found in forested habitats.
Coccotrypes
Coccotrypes is a genus of bark beetles (Curculionidae: Scolytinae) comprising approximately 130 described species. The genus is notable for its specialized seed-boring habits, with several species developing entirely within seeds or propagules of host plants. Coccotrypes dactyliperda (date stone beetle) and C. rhizophorae are economically significant pests of date palms and mangroves respectively, having achieved cosmopolitan distributions through human-mediated dispersal of host plant material.
Coccotrypes advena
seed borer
Coccotrypes advena is a small weevil in the family Curculionidae, commonly known as the seed borer. The species is believed to have originated in Southeast Asia but has established populations in North America and other regions worldwide. It is associated with seeds as a food source, reflecting its common name. As a member of the bark beetle group within Curculionidae, it exhibits the typical compact body form and reduced wing venation characteristic of this lineage.
Coccotrypes distinctus
Coccotrypes distinctus is a species of bark beetle in the family Curculionidae. It has a broad, disjunct distribution spanning tropical and subtropical regions across multiple continents and oceanic islands. The species was described by Wood and Bright in 1992 and has been recorded from Sri Lanka, Pacific Islands from New Guinea to Hawaii, the southern United States, Honduras, Puerto Rico, Jamaica, Suriname, and Guiana. As a member of the genus Coccotrypes, it likely exhibits the typical morphology of small, cylindrical bark beetles adapted for life beneath bark.
Colydium nigripenne
Colydium nigripenne is a species of cylindrical bark beetle first described by LeConte in 1863. It belongs to the family Zopheridae, a group of beetles commonly associated with dead or decaying wood. The species is documented from North America. Very few observations exist in public databases, with only seven records on iNaturalist.
Conophthorus
cone beetles
Conophthorus is a genus of bark beetles in the family Curculionidae comprising approximately 10 described species. Species are specialized on Pinus hosts, with most attacking pine cones and seeds, though some infest shoot tips. The genus includes economically significant pests of pine seed orchards and natural forests, causing cone abortion and reducing seed production. Life histories vary among species: some are univoltine while others are bivoltine, with corresponding differences in seasonal development and host utilization patterns.
Conophthorus ponderosae
lodgepole cone beetle, sugar pinecone beetle, ponderosa pine cone beetle
Conophthorus ponderosae is a scolytine bark beetle in the family Curculionidae that specializes in attacking the cones of pine trees, particularly Pinus ponderosa (ponderosa pine) and Pinus monticola (western white pine). The species is known as a significant pest in seed orchards and natural stands, where heavy infestations can severely reduce seed production. Research has documented its response to host monoterpenes including myrcene, which exhibits both repellency and toxicity effects, and its sex pheromone system involving pityol compounds. The species occurs across western North America and has been the focus of semiochemical-based management research due to the difficulty of conventional insecticide applications in some habitats.
Corticeus tenuis
Corticeus tenuis is a species of darkling beetle in the family Tenebrionidae, described by LeConte in 1878. It is a small, slender beetle distributed across southern Canada from Alberta to Nova Scotia. Like other members of the genus Corticeus, it is associated with bark habitats. Specific biological details regarding its ecology and behavior remain poorly documented in published literature.
Coxelus
cylindrical bark beetles
Coxelus is a genus of cylindrical bark beetles in the family Zopheridae, established by Dejean in 1821. The genus comprises approximately 10 described species distributed across multiple continents. Members are classified within the subfamily Colydiinae and tribe Synchitini. The genus has been documented in Denmark and other regions, with 45 observations recorded on iNaturalist.
Coxelus serratus
Coxelus serratus is a species of cylindrical bark beetle in the family Zopheridae, first described by George Henry Horn in 1885. The species belongs to a group of beetles adapted to life under bark, though specific ecological details remain poorly documented. It is known from scattered records across North America.
Cryphalini
pygmy borers
Cryphalini is a tribe of minute bark beetles (Scolytinae) comprising extremely small species, many under 2 mm in length. The tribe has undergone major taxonomic revision, with former members now distributed across three tribes based on molecular and morphological evidence. Members of this group are among the most abundant bark beetles globally and include significant agricultural pests.
Cryphalus mangiferae
mango bark beetle
A tiny tropical bark beetle in the weevil family Curculionidae (subfamily Scolytinae) that attacks mango trees (Mangifera indica). Native to southern Asia, it has spread to tropical regions worldwide and is recognized as a vector of plant-pathogenic fungi causing mango wilt disease. In Pakistan and other regions, it poses a serious threat to mango cultivation.
Cryphalus pubescens
Cryphalus pubescens is a small bark beetle in the family Curculionidae, subfamily Scolytinae. It is one of approximately 200 species in the genus Cryphalus, a group of ambrosia and bark beetles distributed worldwide. The species was described by Hopkins in 1915 and is known from North America, with records from British Columbia and the United States. Like other cryphaline beetles, it is associated with woody plants, though specific host associations remain poorly documented.
Crypturgini
Crypturgini is a small tribe of bark beetles within the subfamily Scolytinae. These beetles are associated with coniferous trees and are characterized by their minute size and cryptic lifestyle beneath bark. The tribe contains relatively few described species. Members are primarily distributed in the Northern Hemisphere.
Crypturgus alutaceus
Crypturgus alutaceus is a bark beetle species in the family Curculionidae, subfamily Scolytinae, described by E.A. Schwarz in 1894. It is recorded from North America and the Caribbean. As a member of the tribe Crypturgini, it is a small, cryptic bark beetle associated with coniferous wood.
Crypturgus borealis
Boreal Cryptic Bark Beetle
Crypturgus borealis is a species of bark beetle in the family Curculionidae, described by J.M. Swaine in 1917. It is found in North America, with records from Canada including Alberta, British Columbia, and Manitoba. The species belongs to the genus Crypturgus, a group of small, cryptic bark beetles associated with coniferous trees.
Dactylotrypes
Dactylotrypes is a genus of bark beetles (Curculionidae: Scolytinae) established by Eggers in 1927. The genus includes Dactylotrypes longicollis, an exotic species first documented in California and North America in 2012. These beetles are part of the weevil family and are associated with woody plant substrates.