Leaf-beetle
Guides
Acallepitrix nitens
Acallepitrix nitens is a species of flea beetle in the family Chrysomelidae. It was described by Horn in 1889. The species is native to North America and belongs to a genus of small leaf beetles known for their jumping ability, enabled by enlarged hind femora. Very little specific biological information has been published for this particular species.
Acalymma
striped cucumber beetles, cucumber beetles
Acalymma is a genus of leaf beetles in the family Chrysomelidae comprising approximately 72 described species in the Western Hemisphere. The genus is primarily distributed in the New World, with most species occurring in North America including Mexico. Two species, A. vittatum (striped cucumber beetle) and A. trivittatum (western striped cucumber beetle), are major agricultural pests of cucurbit crops. Acalymma species are specialists on plants in the family Cucurbitaceae, with adults feeding on leaves, flowers, and fruit, and larvae feeding on roots.
Acalymma blandulum
Acalymma blandulum is a skeletonizing leaf beetle in the family Chrysomelidae. The species was revised taxonomically in 1980, which established three recognized subspecies with distinct geographic distributions in the southwestern United States and Mexico. It belongs to the genus Acalymma, which includes several agriculturally significant cucurbit-feeding species.
Acanthoscelides aureolus
Licorice Seed Beetle
Acanthoscelides aureolus is a species of leaf beetle in the family Chrysomelidae, commonly known as the Licorice Seed Beetle. It is distributed across Central America and North America, with records extending as far north as Alberta, Canada. The genus Acanthoscelides is known for seed-feeding beetles, many of which are associated with leguminous plants.
Acanthoscelides calvus
Acanthoscelides calvus is a leaf beetle in the family Chrysomelidae, described by Horn in 1873. The species is distributed across North America, with records from Canada and the United States. Larvae have been documented feeding specifically on seeds of Crocanthemum, a genus in the rockrose family (Cistaceae).
Acanthoscelides chiricahuae
Acanthoscelides chiricahuae is a species of leaf beetle in the family Chrysomelidae. It was described by Fall in 1910. The species is found in Central America and North America, with the specific epithet suggesting a connection to the Chiricahua region of southeastern Arizona. As a member of the subfamily Bruchinae (seed beetles), it likely develops in seeds of leguminous host plants, though specific host associations have not been documented in the available sources.
Acanthoscelides margaretae
a. margaretae or near
Acanthoscelides margaretae is a species of leaf beetle in the family Chrysomelidae, described by Johnson in 1970. It belongs to a genus of seed beetles commonly associated with leguminous plants. The species is known from North America, though detailed biological information remains limited.
Acanthoscelides pectoralis
Acanthoscelides pectoralis is a small leaf beetle in the family Chrysomelidae, specifically placed in the subfamily Bruchinae (seed beetles). The species was described by Horn in 1873 and has a documented distribution spanning Central America and North America. Like other members of its genus, it is likely associated with leguminous host plants, though specific host records for this species remain limited in the available literature. The genus Acanthoscelides contains numerous species that are economically significant as pests of stored legumes and agricultural crops.
Acanthoscelides seminulum
Acanthoscelides seminulum is a species of leaf beetle in the family Chrysomelidae. It was described by Horn in 1873. The species is found in North America, with records from the Canadian provinces of Alberta, Manitoba, and Saskatchewan. As a member of the genus Acanthoscelides, it belongs to a group commonly known as bean weevils or seed beetles, many of which are associated with leguminous plants.
Acanthoscelides tenuis
Acanthoscelides tenuis is a small leaf beetle in the family Chrysomelidae, described by Bottimer in 1935. The species belongs to a genus whose members are commonly known as bean weevils or seed beetles, with larvae typically developing inside legume seeds. It is known to occur in North America, with records from the United States and Canada.
Acrocyum sallaei
Acrocyum sallaei is a species of leaf beetle in the family Chrysomelidae, described by Martin Jacoby in 1885. The genus Acrocyum is small and poorly documented, with limited published information on its biology. Records indicate presence in Middle and North America, though specific details about its ecology and natural history remain sparse. The species is rarely encountered in collections and has minimal observational data.
Agrilus obsoletoguttatus
Beech Borer
Agrilus obsoletoguttatus is a small metallic wood-boring beetle in the family Buprestidae, native to North America. It is among the smallest jewel beetle species utilized as prey by the specialist predatory wasp Cerceris fumipennis, which provisions its underground nests with paralyzed buprestid beetles. The species has been documented in nest caches containing up to 13 individuals, reflecting its small size relative to larger buprestid prey.
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chalybea
Grape Flea Beetle, Grape Steely Beetle
Altica chalybea, commonly known as the grape flea beetle or grape steely beetle, is a North American leaf beetle in the family Chrysomelidae. The species is recognized by its small bluish-green metallic coloration and reflective appearance. It is a documented pest of cultivated grape vines, where adults feed on buds and cause measurable reduction in vegetative growth. The species is distributed across North America and the Caribbean.
Altica ignita
strawberry flea beetle
Altica ignita, commonly known as the strawberry flea beetle, is a flea beetle species in the family Chrysomelidae. It occurs in North America. As a member of the genus Altica, it shares the characteristic enlarged hind femora that enable flea beetles to jump when disturbed. The common name suggests an association with strawberry plants, though specific host relationships require confirmation.
Altica pedipallida
Altica pedipallida is a flea beetle in the tribe Alticini described by LeSage in 2008. The species is known from eastern Canada (Ontario and Québec) and has been documented with a larval host association with Oenothera pilosella (Onagraceae), representing the first recorded host plant for this species. Like other members of the genus Altica, adults likely feed on foliage of host plants.
Altica texana
Altica texana is a species of flea beetle in the family Chrysomelidae, first described by Schaeffer in 1906. It belongs to the genus Altica, a large group of small, jumping leaf beetles commonly known as flea beetles due to their enlarged hind femora that enable them to leap when disturbed. The species is recorded from North America, though specific details about its biology and ecology remain poorly documented.
Amblycerus robiniae
Locust Seed Beetle
Amblycerus robiniae is a leaf beetle in the family Chrysomelidae, commonly known as the locust seed beetle. The species is distributed across North America, with records from Canada (Alberta, Ontario) and the United States (Vermont). As a member of the genus Amblycerus, it is associated with leguminous host plants, particularly species in the genus Robinia.
Anisostena ariadne
Anisostena ariadne is a species of hispine leaf beetle in the family Chrysomelidae, first described by Newman in 1841. Adults measure 4.6–5.3 mm in length and are characterized by black elytra with a purple iridescent hue. The species has been documented feeding on switchgrass (Panicum virgatum). It is widely distributed across the eastern and central United States, with records from 18 states and the District of Columbia.
Anisostena cyanea
Anisostena cyanea is a small leaf beetle in the subfamily Hispinae, first described by Staines in 1994. The species has been recorded from Arizona and Texas in the southwestern United States, and from Mexico. Adults have been collected on several species of Bothriochloa grasses, though whether these represent true host plants remains uncertain.
Anisostena gracilis
Anisostena gracilis is a small leaf beetle in the family Chrysomelidae, subfamily Cassidinae (tortoise beetles and allies). Adults measure approximately 3–3.7 mm in length and are distinguished by orange-red or yellowish coloration with a black sutural stripe. The species has been documented feeding on Panicum maximum (guinea grass). It occurs in the southwestern United States and Mexico.
Anisostena kansana
Anisostena kansana is a small leaf beetle in the family Chrysomelidae, specifically within the tortoise beetle subfamily Cassidinae. Adults measure 4.1–5.3 mm and display distinctive metallic coloration: the head and elytra are greenish-blue, while the pronotum is reddish-orange with a greenish-blue anterior area. The species is known from a limited geographic range in the central United States, with records from Kansas, Mississippi, Missouri, and Oklahoma. It has been documented feeding on Tripsacum dactyloides (eastern gamagrass).
Anisostena lecontii
Anisostena lecontii is a small leaf beetle in the family Chrysomelidae, known from the southeastern United States. Adults measure approximately 4.6–4.8 mm in length and exhibit distinctive coloration with a black head and elytra contrasting with a red pronotum that has black basal and apical margins. The species has been recorded from Florida, South Carolina, and Virginia. Adults have been collected on Panicum repens, though whether this grass serves as the actual food plant remains uncertain.
Anisostena nigrita
black tortoise beetle
Anisostena nigrita, commonly known as the black tortoise beetle, is a leaf beetle in the family Chrysomelidae. It has been recorded across a broad geographic range in North America, from Canada to the southern United States. The species has been observed feeding on grasses in the genus Andropogon and Schizachyrium scoparium. It belongs to the tortoise beetle subfamily Cassidinae, characterized by a body form adapted for clinging to leaf surfaces.
Anisostena texana
A small hispine leaf beetle in the subfamily Cassidinae, measuring 4.1-4.6 mm. Adults display distinctive metallic blue elytra and head contrasting with a reddish-orange pronotum. The species occurs in the south-central United States and Mexico, where adults have been collected from prairie vegetation.
Anomoea
Anomoea is a genus of leaf beetles in the subfamily Cryptocephalinae, family Chrysomelidae. The genus name is frequently confused with the tephritid fly genus Anomoia due to historical nomenclatural confusion. The genus includes species such as Anomoea flavokansiensis, which has been studied as a herbivore of leguminous plants in agricultural systems.
Anomoea flavokansiensis
Anomoea flavokansiensis is a case-bearing leaf beetle (Chrysomelidae) described by Moldenke in 1970. It is known from North America and has been studied as a herbivore of the legume Desmanthus illinoensis, where high population densities can potentially reduce seed yield. Research has examined its overwintering biology and the effects of agricultural polyculture on its population density.
Anomoea laticlavia
Clay-colored Leaf Beetle, Persimmon Beetle
Anomoea laticlavia is a case-bearing leaf beetle native to central and eastern North America. Adults measure 7–12 mm and display distinctive reddish-brown elytra with a variable-width black suture. The species belongs to the unranked taxon Camptosomata, characterized by larvae that construct portable cases from fecal material and shed skins. Adults feed on leaves of various host plants including legumes, persimmons, oaks, willows, and ragweed, while larvae are subterranean root or litter feeders. Some Florida populations have been recognized as a distinct subspecies.
Anomoea nitidicollis crassicornis
Anomoea nitidicollis crassicornis is a subspecies of leaf beetle in the family Chrysomelidae, described by Schaeffer in 1933. It belongs to a genus within a family known for herbivorous feeding habits on plant foliage. The subspecies is recorded from North America and Middle America, though specific ecological details remain poorly documented in available literature.
Anomoea nitidicollis nitidicollis
Anomoea nitidicollis nitidicollis is a subspecies of leaf beetle in the family Chrysomelidae, tribe Clytrini. Members of this genus are associated with host plants in the family Asteraceae. The nominate subspecies occurs in North and Middle America. As with other clytrine beetles, adults are likely flower visitors and larvae develop in association with plant material.
Anomoea rufifrons occidentimutabilis
A subspecies of case-bearing leaf beetle in the family Chrysomelidae. Described by Moldenke in 1970 from western North American populations of Anomoea rufifrons. The subspecific epithet "occidentimutabilis" suggests variability in western populations. Like other members of the genus, adults are associated with woody vegetation and are case-bearers in the larval stage.
Aphthona cyparissiae
brown dot leafy spurge flea beetle
Aphthona cyparissiae is a small leaf beetle native to Europe, introduced to North America as a biological control agent for leafy spurge (Euphorbia esula), a noxious invasive weed. Adults feed on leaves and flowers, while larvae feed on roots and root hairs, with heavy infestations capable of killing host plants. The species was first released in Wyoming in 1986 and has since established populations across much of the northern United States and Canada. It is a spurge specialist, preferring cypress spurge (Euphorbia cyparissias) in its native range.
Aulacoscelis candezei
Aulacoscelis candezei is a leaf beetle species in the family Orsodacnidae, described by Chapuis in 1874. It is one of relatively few species in this small family of beetles. The species has been documented in Central America and North America, though detailed biological information remains limited.
Aulacothorax copalina
Copal Flea Beetle
Aulacothorax copalina, commonly known as the Copal Flea Beetle, is a small leaf beetle in the family Chrysomelidae. The species was formerly classified under the genus Orthaltica but has been reassigned to Aulacothorax based on morphological and phylogenetic evidence. It is endemic to North America and has been documented in 131 iNaturalist observations.
Aulacothorax melina
poison ivy leaf beetle
Aulacothorax melina is a leaf beetle in the family Chrysomelidae, commonly known as the poison ivy leaf beetle. The species was formerly placed in the genus Orthaltica but has been reclassified to Aulacothorax. It is native to North America and is associated with poison ivy (Toxicodendron radicans) as a host plant. The beetle is one of relatively few insects that can feed on poison ivy, which contains urushiol, a compound that causes allergic reactions in most humans and deters many herbivores.
Aulacothorax recticollis
Aulacothorax recticollis is a small leaf beetle in the family Chrysomelidae. The species was formerly placed in the genus Orthaltica but has been reclassified to Aulacothorax. It occurs across Central America and North America, though specific details about its biology and ecology remain poorly documented in the scientific literature.
Baliosus californicus
Baliosus californicus is a leaf-mining tortoise beetle (Cassidinae) in the family Chrysomelidae. The species is found in western North America and Mexico, where adults feed on various Ceanothus species. It was described by Horn in 1883 and is characterized by distinctive elytral punctation and costate interspaces.
Baliosus ferrugineus
Baliosus ferrugineus is a species of leaf beetle in the family Chrysomelidae, subfamily Cassidinae. It was described by Staines in 2006. The species is known from North America, with records from Arizona. Like other members of the genus Baliosus, it belongs to the tribe Chalepini, a group of tortoise beetles characterized by their flattened, often expanded bodies and association with host plants.
Baliosus nervosus
Basswood Leafminer, basswood leaf miner
Baliosus nervosus is a leaf beetle in the family Chrysomelidae, commonly known as the basswood leafminer. It is native to North America and has been recorded from eastern Canada including New Brunswick and Nova Scotia. The species is associated with basswood (Tilia spp.) as its primary host, with adults skeletonizing leaf surfaces and larvae creating leaf mines. It has also been observed mining soybean leaves.
Bassareus brunnipes
Bassareus brunnipes is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America. The species belongs to the subfamily Cryptocephalinae, whose larvae construct protective cases from fecal material and exuviae.
Bassareus detritus
Bassareus detritus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America. The species belongs to a genus of small leaf beetles, with 'detritus' possibly referring to its association with decaying plant material.
Bassareus mammifer
Red-Banded Bassar
Bassareus mammifer is a case-bearing leaf beetle in the family Chrysomelidae, commonly known as the Red-Banded Bassar. The species is characterized by its distinctive red banding pattern and is found across North America, with documented records from Canada and the United States. As a member of the Cryptocephalinae subfamily, larvae construct protective cases from fecal material and shed exoskeletons.
Blepharida
Blepharida is a genus of flea beetles in the subfamily Galerucinae, tribe Alticini, comprising approximately 73 described species. The genus is notable for its specialized coevolutionary relationship with plants in the genus Bursera. New World and Afrotropical species form distinct clades, and the supraspecific taxonomy has undergone extensive revision with multiple subgenera and related genera proposed and reorganized over the past century.
Brachycoryna dolorosa
Brachycoryna dolorosa is a small leaf beetle in the family Chrysomelidae, subfamily Cassidinae. Adults measure 2.1–3.1 mm in length. The species is known from western North America, with records from California, Idaho, Montana, Utah, and Washington. Adults have been collected from several plant species including Media elegans, Media sativa, Holocarpha heermannii, Hemizona species, and Ceanothus cuneatus, though the actual foodplant remains unknown.
Brachycoryna hardyi
Brachycoryna hardyi is a small leaf beetle in the family Chrysomelidae, subfamily Cassidinae. It measures 2.5–3.7 mm as an adult and exhibits variable coloration with reddish-yellow and black patterning. The species has been recorded feeding on three Ceanothus species and occurs across western North America from Canada to Mexico.
Brachycoryna pumila
Brachycoryna pumila is a small leaf beetle in the family Chrysomelidae, first described by Guérin-Méneville in 1844. Adults measure 2.5–3.5 mm in length and exhibit distinctive coloration: black head, brownish-yellow pronotum, and yellow elytra with variable brown markings. The species has been recorded feeding on several plants in the family Malvaceae. Its distribution spans from the southern United States through Mexico and Central America to northern South America, including Caribbean islands.
Brachypnoea convexa
Brachypnoea convexa is a species of leaf beetle in the family Chrysomelidae, found in the Eastern United States. First described by Thomas Say in 1824, this species belongs to a genus of small leaf beetles. Very little has been published regarding its biology, ecology, or specific habitat requirements.
Brachypnoea lecontei
Texas Live Oak Leaf Beetle
Brachypnoea lecontei is a leaf beetle in the family Chrysomelidae. The species was described in 2003 following taxonomic revision of LeConte's original 1858 specimen, which had been synonymized with Brachypnoea puncticollis until genetic and morphological study of type material confirmed its distinct status. It is found in the Great Plains of the United States and has a documented association with Texas live oak.
Brachypnoea rotundicollis
Brachypnoea rotundicollis is a leaf beetle species in the family Chrysomelidae. It was described by American entomologist Charles Frederic August Schaeffer in 1906. The species has a restricted distribution in southeastern Texas, with only 11 documented observations. Little is known about its biology or ecology beyond basic taxonomic and distributional records.
Brachypnoea texana
Brachypnoea texana is a species of leaf beetle in the family Chrysomelidae. It is endemic to the Edwards Plateau in Texas, with a restricted geographic range. The species was first described by American entomologist Charles Frederic August Schaeffer in 1919. Limited information is available regarding its biology and ecology.
Bromius obscurus
Western Grape Rootworm, Brown and Black Beetle
Bromius obscurus is a small leaf beetle (Chrysomelidae: Eumolpinae) and the sole member of its genus. It is a Holarctic species with a notable geographic parthenogenesis pattern: North American populations reproduce sexually while European populations are triploid and reproduce asexually. The species is recognized as a pest of grape vines in Europe and western North America. Adults possess a stridulatory apparatus on the wings, the first documented in the subfamily Eumolpinae.