Coleoptera

  • A metallic green tiger beetle at the bottom of an orange plastic jar.
    Tiger beetles are some of the most charismatic insects on Earth: metallic, sharp-eyed, absurdly fast, and every bit as predatory as their name suggests. Come learn how they hunt, why their larvae live like tiny trapdoor monsters in the soil, and what their decline says about the fragile open habitats many other species need too.

Guides

  • Cryptocephalus binotatus

    Cryptocephalus binotatus is a species of case-bearing leaf beetle in the family Chrysomelidae, described by R. White in 1968. It is found in North America. Like other members of the genus, it likely exhibits the characteristic case-bearing behavior where larvae construct protective cases from their own fecal material and shed exoskeletons.

  • Cryptocephalus bispinus

    Cryptocephalus bispinus is a species of case-bearing leaf beetle in the family Chrysomelidae, described by Suffrian in 1858. The species is known from North America, though detailed biological information remains limited. Like other members of the genus Cryptocephalus, it likely exhibits the characteristic case-bearing behavior where larvae construct protective cases from their own fecal material and shed skins.

  • Cryptocephalus brunneovittatus

    Texas Brown-striped Cryptocephalus

    Cryptocephalus brunneovittatus is a case-bearing leaf beetle described by Schaeffer in 1904. It belongs to the genus Cryptocephalus, a large group of leaf beetles known for constructing protective cases from fecal material and exuviae. The species occurs in Central America and North America, with the common name "Texas Brown-striped Cryptocephalus" suggesting a primary association with Texas in the United States. Like other members of its genus, it is presumed to feed on plant foliage, though specific host associations remain undocumented.

  • Cryptocephalus castaneus

    Chestnut-colored Cryptocephalus

    Cryptocephalus castaneus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America. The species is one of over 1,000 described species in the genus Cryptocephalus, a diverse group of leaf beetles known for their rounded, compact bodies and enlarged hind femora adapted for jumping. The specific epithet "castaneus" refers to the chestnut coloration typical of this species.

  • Cryptocephalus downiei

    Downie's spotted leaf beetle, Downie-dotted Cryptocephalus

    Cryptocephalus downiei is a species of case-bearing leaf beetle in the family Chrysomelidae. It was described in 2000 by E. Riley and Gilbert, with the specific epithet honoring American psychologist and coleopterist Norville Downie. The species is known from North America and belongs to a genus whose larvae construct portable cases from their own feces and shed exoskeletons.

  • Cryptocephalus duryi

    Tamaulipan Freckled Cryptocephalus

    Cryptocephalus duryi is a case-bearing leaf beetle in the family Chrysomelidae, first described by Schaeffer in 1906. It is known from North America, with iNaturalist records documenting 17 observations. The species belongs to a genus of leaf beetles characterized by larvae that construct portable cases from fecal material and shed skins.

  • Cryptocephalus guttulatellus

    Spotted Tamaulipan Cryptocephalus

    Cryptocephalus guttulatellus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America. The species is part of a large genus of leaf beetles commonly known as case-bearers due to the habit of larvae constructing protective cases from their own fecal material and shed exoskeletons.

  • Cryptocephalus guttulatus

    Fourteen-spotted Leaf Beetle

    Cryptocephalus guttulatus, commonly known as the fourteen-spotted leaf beetle, is a case-bearing leaf beetle in the family Chrysomelidae. The species is found in North America, with documented records from Ontario and Québec in Canada. It belongs to a large genus of leaf beetles known for their rounded, compact bodies and protective larval cases. The common name refers to the spotted pattern on its elytra.

  • Cryptocephalus implacidus

    Coarse Cryptocephalus

    Cryptocephalus implacidus is a case-bearing leaf beetle in the family Chrysomelidae, described by R. White in 1968. It occurs in North America, where adults are associated with herbaceous vegetation. The species is part of the diverse genus Cryptocephalus, whose members are commonly known as case-bearing leaf beetles due to the habit of larvae constructing protective cases from fecal material and shed exoskeletons.

  • Cryptocephalus incertus

    Uncertain Case-bearing Leaf Beetle

    Cryptocephalus incertus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America, with distribution records from Ontario and Québec in Canada. The species was described by Olivier in 1808. As a member of the genus Cryptocephalus, it belongs to a group of leaf beetles known for their distinctive case-bearing behavior, where larvae construct and carry protective cases from their own fecal material and host plant debris.

  • Cryptocephalus leucomelas

    Bi-blotched Cryptocephalus

    Cryptocephalus leucomelas is a case-bearing leaf beetle in the family Chrysomelidae, measuring 4.0–6.0 mm in length. It is distributed across North America, including the United States and Canada. The species belongs to a genus commonly known as case-bearing leaf beetles, with larvae that construct protective cases from fecal material and shed skins. Three subspecies have been described: C. l. leucomelas, C. l. trisignatus, and C. l. vitticollis.

  • Cryptocephalus merus

    case-bearing leaf beetle

    Cryptocephalus merus is a small case-bearing leaf beetle in the family Chrysomelidae, measuring 3.8–4.3 mm in length. The species is known from a restricted distribution in the southwestern United States, with confirmed records from Arizona and Texas and possible occurrence in Mexico. Like other members of the genus, adults construct protective cases from fecal material and shed exoskeletons that cover the abdomen.

  • Cryptocephalus multisignatus

    Cryptocephalus multisignatus is a case-bearing leaf beetle in the family Chrysomelidae, first described by Schaeffer in 1933. The species is known to occur in North America. Like other members of the genus Cryptocephalus, adults likely feed on foliage of various plants, though specific host associations for this species remain undocumented. The larvae construct protective cases from fecal material and shed skins, a characteristic trait of the subfamily Cryptocephalinae.

  • Cryptocephalus mutabilis

    Shield-backed Cryptocephalus

    Cryptocephalus mutabilis is a species of case-bearing leaf beetle in the family Chrysomelidae. It is native to North America, with confirmed records from Canada (Manitoba, Ontario, and Québec). The species belongs to a large genus of small to medium-sized leaf beetles commonly known as case-bearers due to their habit of constructing protective cases from fecal material and shed skins.

  • Cryptocephalus notatus fulvipennis

  • Cryptocephalus optimus

    Happy Cryptocephalus

    Cryptocephalus optimus is a case-bearing leaf beetle in the family Chrysomelidae, described by Schöller in 2002. The species is found in North America. Very little specific biological information is available for this species beyond its taxonomic placement and general distribution.

  • Cryptocephalus pallidicinctus

    Pale-bordered Cryptocephalus

    Cryptocephalus pallidicinctus is a case-bearing leaf beetle in the family Chrysomelidae, described by Fall in 1932. It is known from North America, with very limited observational records. As a member of the genus Cryptocephalus, it likely shares the characteristic behavior of larvae constructing portable cases from fecal material and exuviae, though specific details for this species remain undocumented.

  • Cryptocephalus pseudomaccus

    Cryptocephalus pseudomaccus is a species of case-bearing leaf beetle in the family Chrysomelidae. It was described by R. White in 1968 and is known to occur in North America. As a member of the genus Cryptocephalus, it belongs to a group of leaf beetles characterized by their habit of constructing protective cases from their own fecal material.

  • Cryptocephalus pumilus

    Pale Coastal Cryptocephalus

    Cryptocephalus pumilus is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Haldeman in 1849. It is known from North America, with iNaturalist observations suggesting it may be associated with coastal or near-coastal habitats based on its common name. Like other members of the genus Cryptocephalus, adults construct protective cases from fecal material and shed exuviae that cover the abdomen. The species is part of a large genus of leaf beetles, many of which are associated with specific host plants.

  • Cryptocephalus schreibersii

    Furrow-necked Cryptocephalus

    Cryptocephalus schreibersii is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America. The species belongs to the genus Cryptocephalus, a large group of leaf beetles commonly known as case-bearers due to their habit of constructing protective cases from fecal material and exuviae.

  • Cryptocephalus texanus

    Texas Cryptocephalus

    Cryptocephalus texanus is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Schaeffer in 1933. As a member of the genus Cryptocephalus, it possesses the characteristic hardened larval case formed from fecal material and shed exuviae. The species is known from North America, with records primarily from the southern United States. Like other members of its genus, adults are small, rounded leaf beetles with enlarged hind femora adapted for jumping.

  • Cryptocephalus tinctus

    Tinged Case-bearing Leaf Beetle

    Cryptocephalus tinctus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is native to North America, with records from the United States and Canada including Québec. As a member of the genus Cryptocephalus, it possesses the characteristic case-bearing habit where larvae construct portable cases from fecal material and shed exoskeletons. The specific epithet "tinctus" (Latin for "tinged" or "dyed") likely refers to subtle coloration differences from related species.

  • Cryptocephalus trizonatus

    Tri-banded Cryptocephalus

    Cryptocephalus trizonatus is a species of case-bearing leaf beetle in the family Chrysomelidae. The species is characterized by three distinct bands or zones on its elytra, which gives rise to both its scientific name ('trizonatus' meaning 'three-zoned') and its common name. It occurs across Central America and North America, with 43 observations documented on iNaturalist. Like other members of the genus Cryptocephalus, it is associated with vegetation and has been collected by sweeping herbaceous plants.

  • Cryptocephalus umbonatus

    Cryptocephalus umbonatus is a case-bearing leaf beetle in the family Chrysomelidae, described by Schaeffer in 1906. It is found in North America. Like other members of its genus, it belongs to a group commonly known as case-bearing leaf beetles due to the habit of larvae constructing protective cases from fecal material and exuviae.

  • Cryptolestes

    Cryptolestes is a genus of small beetles in the family Laemophloeidae. Several species are economically significant pests of stored products, particularly food grains. The genus includes four particularly notorious species: C. ferrugineus (rusty grain beetle), C. pusilloides, C. pusillus (flat grain beetle), and C. turcicus (flour mill beetle). Species within this genus are morphologically similar and often require examination of genitalia for definitive identification.

  • Cryptolestes cornutus

    Cryptolestes cornutus is a species of flat bark beetle in the family Laemophloeidae. The genus Cryptolestes comprises small, elongate beetles commonly found under bark and in stored products. Many species in this genus are recognized as pests of stored grain and cereal products. The specific epithet 'cornutus' refers to horn-like structures, though detailed morphological descriptions for this particular species are limited in available literature.

  • Cryptolestes punctatus

    Cryptolestes punctatus is a species of lined flat bark beetle in the family Laemophloeidae. It is native to North America, with distribution records from Canada (Ontario) and the United States. The species was first described by LeConte in 1854. As a member of Laemophloeidae, it belongs to a family of small, flattened beetles commonly associated with dead or decaying wood and stored products.

  • Cryptophagus punctipennis

    Cryptophagus punctipennis is a species of silken fungus beetle in the family Cryptophagidae, first described by Brisout de Barneville in 1863. The genus Cryptophagus comprises small beetles typically associated with fungal substrates. Distribution records indicate presence in Belgium and Denmark, though detailed ecological and biological information for this specific species remains limited in available sources.

  • Cryptoramorphus floridanus

    Cryptoramorphus floridanus is a species of beetle in the family Ptinidae, first described by White in 1966. The genus Cryptoramorphus belongs to the spider beetle group, though specific details about this particular species remain scarce. Records indicate its presence in North America, with the species epithet suggesting a Florida association. Only a single observation has been documented on iNaturalist, indicating it is rarely encountered or underreported.

  • Cryptorhopalum aspilon

    Cryptorhopalum aspilon is a species of carpet beetle in the family Dermestidae, described by Beal in 1985. It belongs to a genus of small, oval beetles known for their association with organic materials. The species is recorded from North America, though detailed ecological and biological information appears limited.

  • Cryptorhopalum floridanum

    Cryptorhopalum floridanum is a species of carpet beetle in the family Dermestidae, described by Casey in 1916. It belongs to a genus of small beetles known for their association with dried organic materials. The species is native to North America, with records from the southeastern United States. Very little is known about its specific biology or ecology.

  • Cryptoscatomaseter

    Cryptoscatomaseter is a genus of dung beetles in the family Scarabaeidae, subfamily Aphodiinae. It was described by Gordon and Skelley in 2007 and is known from the Neotropical region. Members of this genus are small to medium-sized scarab beetles associated with dung decomposition. The genus is part of the diverse Aphodiini tribe, which contains many species that feed on animal feces.

  • Cryptoscatomaseter haldemani

    Cryptoscatomaseter haldemani is a species of scarab beetle in the family Scarabaeidae, subfamily Aphodiinae. It belongs to a genus of small dung beetles found in North America. The species was described by Horn in 1887 and is distributed across the central and southern United States.

  • Cryptoscatomaseter rossi

    Cryptoscatomaseter rossi is a species of scarab beetle in the family Scarabaeidae, subfamily Aphodiinae. It was described by Cartwright in 1944. The genus Cryptoscatomaseter belongs to the dung beetle tribe Aphodiini. Distribution records indicate presence in Texas, USA.

  • Cryptoscatomaseter umbricollis

    A small scarab beetle in the subfamily Aphodiinae, known from the southwestern United States. The species name 'umbricollis' refers to the shaded or dark collar region. It belongs to a genus of aphodiine dung beetles with limited documented natural history.

  • Cultellunguis

    Cultellunguis is a genus of soldier beetles in the family Cantharidae, established by McKey-Fender in 1950. The genus contains approximately nine described species distributed in North America. These beetles are part of the diverse Cantharidae family, which is characterized by soft-bodied adults and larvae that are often predatory or feed on detritus.

  • Cultellunguis hatchi

    Cultellunguis hatchi is a species of soldier beetle (family Cantharidae) described by McKey-Fender in 1950. The species belongs to a genus of elongate, soft-bodied beetles commonly found in North American habitats. Like other cantharids, it likely exhibits the family's characteristic biology involving predatory or omnivorous feeding habits and association with flowering vegetation.

  • Cultellunguis perpallens sanctaeclarae

    Cultellunguis perpallens sanctaeclarae is a subspecies of soldier beetle in the family Cantharidae. It is a member of a genus characterized by slender, elongated bodies and soft elytra typical of the family. The subspecies epithet "sanctaeclarae" suggests a geographic or commemorative association. Like other Cantharidae, it likely exhibits the family's characteristic flexible elytra and active diurnal behavior. Recorded observations are limited, indicating it may be uncommon or underreported.

  • Curculio caryae

    pecan weevil

    Curculio caryae, the pecan weevil, is a specialized nut-feeding weevil native to North America and a major economic pest of pecan (Carya illinoinensis) and hickory (Carya species) production. Adults emerge from soil in August and September, feed on developing nuts, and females use their elongated proboscis to drill through shells and deposit eggs into kernels. Larvae develop inside nuts for approximately 42 days before emerging through clean, round exit holes and burrowing into soil to pupate. The life cycle typically spans two years, though approximately 10% of individuals require three years. The species has been observed to occasionally infest Persian walnut (Juglans regia).

  • Curculio rubidus

    Curculio rubidus is a weevil species in the family Curculionidae, first described by Gyllenhal in 1835. Like other members of the genus Curculio, it possesses the characteristic elongated rostrum typical of acorn and nut weevils. The species is recorded from Belgium based on distribution data, though detailed biological information remains limited in published sources.

  • Curelius japonicus

    silken fungus beetle

    Curelius japonicus is a species of silken fungus beetle in the family Cryptophagidae. Despite its specific epithet suggesting Japanese origin, the species is established in North America. It belongs to a family commonly associated with fungal feeding habits. The species was described by Reitter in 1877.

  • Curimopsis albonotata

    pill beetle

    Curimopsis albonotata is a species of pill beetle in the family Byrrhidae, first described by LeConte in 1861. It is known from North America, with confirmed records from Alberta and the Yukon Territory in Canada. Pill beetles in this family are characterized by their ability to conglobate, or roll into a ball, as a defensive behavior. The specific epithet 'albonotata' suggests white markings, though detailed morphological descriptions are limited in available sources.

  • Curtomerus flavus

    Curtomerus Longhorned Beetle

    Curtomerus flavus is a longhorn beetle (Cerambycidae) described by Johan Christian Fabricius in 1775. The species is distributed across North, Central, and South America, as well as Pacific and Caribbean islands. It belongs to the subfamily Cerambycinae and tribe Callidiopini. Limited ecological and behavioral information is available for this species.

  • Cybocephalus californicus

    Cybocephalus californicus is a minute beetle species in the family Cybocephalidae, described by Horn in 1879. The species is native to western North America, with documented occurrence in British Columbia, Canada. Adults measure 0.95–1.30 mm in length. Members of the genus Cybocephalus are known as predatory beetles that feed on scale insects and whiteflies, though species-specific biological details for C. californicus remain poorly documented.

  • Cyclocephala aravaipensis

    Cyclocephala aravaipensis is a species of scarab beetle in the subfamily Dynastinae, first described by Brett Ratcliffe in 1992. It belongs to the masked chafer genus Cyclocephala, a group of beetles whose larvae are commonly known as "white grubs" and are significant pests of turfgrass. The species epithet "aravaipensis" refers to the Aravaipa region in Arizona, indicating its known geographic association. Like other members of its genus, adults are small brown beetles with a distinctive dark facial marking, while larvae are cream-colored, C-shaped grubs that feed on plant roots.

  • Cyclocephala robusta

    Cyclocephala robusta is a species of masked chafer beetle in the family Scarabaeidae, first described by John Lawrence LeConte in 1863. It belongs to the subfamily Dynastinae, though unlike many members of this group it lacks the large horns characteristic of the subfamily. The species is native to the south-central and southeastern United States. Like other Cyclocephala species, it likely has a life cycle involving root-feeding larval stages and adult beetles that do not feed on plants.

  • Cyclodinus

    antlike flower beetles

    Cyclodinus is a genus of antlike flower beetles in the family Anthicidae, established by Mulsant & Rey in 1866. The genus contains more than 40 described species. Members of this genus exhibit the characteristic ant-mimicking morphology typical of Anthicidae, with narrow, elongate bodies and antennae that contribute to their resemblance to ants. The genus has been documented across parts of Europe including Denmark, Norway, and Sweden.

  • Cyclodinus californicus

    Cyclodinus californicus is a species of antlike flower beetle in the family Anthicidae, first described by LaFerté-Sénectère in 1849. Despite its specific epithet suggesting a California origin, the species has a broader distribution across the Caribbean, Central America, and North America. The genus Cyclodinus belongs to a family of small beetles commonly known as antlike flower beetles due to their resemblance to ants. Information on the biology and ecology of this particular species remains limited.

  • Cyclodinus mono

    Cyclodinus mono is a species of ant-like flower beetle in the family Anthicidae, described by Chandler in 2005. The species epithet 'mono' suggests a connection to Mono Basin or Mono County in California, though this association requires confirmation. As a member of Anthicidae, it belongs to a family of small beetles commonly known as ant-like flower beetles due to their resemblance to ants. The species is recorded from North America and Middle America according to GBIF data.

  • Cycloneda emarginata

    Cycloneda emarginata is a species of lady beetle in the family Coccinellidae. The species was described by Mulsant in 1850, originally placed in the genus Coccinella. Records indicate occurrence in South America, including Brazil (Santa Catarina) and Colombia across multiple departments. The genus Cycloneda contains species commonly known as spotless lady beetles, characterized by unmarked or minimally marked elytra.