Chrysomelidae
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.
Acalymma peregrinum
Acalymma peregrinum is a skeletonizing leaf beetle in the family Chrysomelidae. It occurs in Central America and North America. The genus Acalymma includes several economically important agricultural pests, though specific information about A. peregrinum's biology and ecology is limited in available sources.
Acalymma trivittatum
Western Striped Cucumber Beetle
Acalymma trivittatum, the western striped cucumber beetle, is a specialist leaf beetle native to western North America. It is a key agricultural pest of cucurbit crops including melons, cucumbers, squash, and pumpkins. The species is closely related to the eastern striped cucumber beetle (Acalymma vittatum), with which it shares similar biology and damage potential. Both adults and larvae cause significant economic injury through direct feeding damage and transmission of bacterial wilt pathogen Erwinia tracheiphila.
Acalymma vittatum
striped cucumber beetle
Acalymma vittatum, the striped cucumber beetle, is a chrysomelid beetle native to eastern North America and a serious agricultural pest of cucurbit crops. Adults and larvae both feed on host plants, with adults damaging foliage, flowers, and fruit while larvae feed on roots. The species is a vector of Erwinia tracheiphila, the causal agent of bacterial wilt, which can destroy susceptible crops. Males produce an aggregation pheromone, vittatalactone, that attracts both sexes to host plants and facilitates mate finding. The species is replaced west of the Rocky Mountains by the western striped cucumber beetle, Acalymma trivittatum.
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 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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bivittata
Two-banded Tortoise Beetle
A tortoise beetle in the family Chrysomelidae, distinguished by its flattened, shield-like body form typical of the subfamily Cassidinae. The species occurs in North America and Central America. As a member of the tortoise beetle group, it likely feeds on foliage, though specific host plants for this species are not well documented in available sources.
Algarobius
Algarobius is a genus of seed beetles in the family Chrysomelidae, subfamily Bruchinae, comprising approximately six described species. The genus is notable for its association with leguminous plants, particularly Prosopis species (mesquites). Algarobius prosopis has been widely used as a biological control agent against invasive mesquite weeds in South Africa. These beetles are specialized seed-feeders whose larvae develop within seeds.
Algarobius prosopis
Prosopis Seed Beetle
Algarobius prosopis is a seed-feeding bruchid beetle in the family Chrysomelidae. It has been introduced to South Africa as a biological control agent for invasive mesquite weeds (Prosopis species). Native parasitoids in the introduced range interfere with its efficacy as a biocontrol agent. The species has a broad native distribution spanning Africa, Europe and Northern Asia (excluding China), Central America, and North America.
Altica
Metallic Flea Beetles
Altica is a large genus of flea beetles comprising approximately 300 species distributed nearly worldwide. The genus name derives from Greek 'haltikós' meaning 'jumper,' referring to the adult beetles' ability to jump when disturbed. Species are small, metallic blue-green to bronze beetles that are morphologically similar and often distinguished only by male genitalia. Both larvae and adults are phytophagous, with most species showing strong host plant specificity. The genus is best represented in the Neotropical realm, with significant diversity in the Nearctic and Palearctic regions.
Altica ambiens
Alder Flea Beetle
Altica ambiens, commonly known as the alder flea beetle, is a species of flea beetle in the family Chrysomelidae. It is found in North America. The species was described by John Lawrence LeConte in 1859. Two subspecies are recognized: Altica ambiens alni and the nominate Altica ambiens ambiens.
Altica bimarginata
willow flea beetle
Altica bimarginata is a small, shiny blue flea beetle in the family Chrysomelidae, commonly known as the willow flea beetle. It measures 5–6 mm in length and 2–3 mm in width. The species is distributed across North America and Central America and is frequently associated with willow plants (Salix genus). Three subspecies are recognized: A. b. bimarginata, A. b. labradorensis, and A. b. plicipennis. A neotype was designated for this species due to the loss of the original type specimen.
Altica 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 foliaceae
apple flea beetle
Altica foliaceae is a flea beetle in the family Chrysomelidae. It occurs in Central America and North America, with records extending into Canada (Manitoba). The common name 'apple flea beetle' suggests association with apple or related host plants, though specific ecological details are limited in available sources.
Altica guatemalensis
Altica guatemalensis is a species of flea beetle in the family Chrysomelidae. It is one of many species in the large and diverse genus Altica, which is distributed across much of North and Central America. The genus is known for species associated with various host plants, though specific host relationships for A. guatemalensis remain poorly documented. Like other flea beetles, adults possess enlarged hind femora that enable their characteristic jumping escape response.
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 obliterata
Altica obliterata is a flea beetle (family Chrysomelidae, subfamily Galerucinae) described by John Lawrence LeConte in 1859. Like other members of the genus Altica, adults possess enlarged hind femora adapted for jumping, a characteristic trait of the tribe Alticini. The species occurs in North and Middle America, though specific details regarding its host plants, habitat preferences, and life history remain poorly documented in the available literature.
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 prasina
Altica prasina is a flea beetle species in the family Chrysomelidae, described by John Lawrence LeConte in 1857. The specific epithet "prasina" derives from Latin, meaning leek-green, likely referencing its coloration. As a member of the genus Altica, it possesses the enlarged hind femora characteristic of flea beetles, enabling jumping locomotion. The species occurs in North America, though detailed biological studies remain limited.
Altica probata
Altica probata is a species of flea beetle in the family Chrysomelidae, first described by Fall in 1910. It is a member of the large and diverse genus Altica, which contains numerous species associated with various host plants. The species is recorded from western North America, including British Columbia in Canada. Like other Altica species, adults are likely small, metallic, and capable of jumping when disturbed.
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.
Altica torquata
steel-blue grapevine flea beetle, Purple-collared Flea Beetle
Altica torquata is a species of flea beetle in the family Chrysomelidae. It is commonly known as the steel-blue grapevine flea beetle or the purple-collared flea beetle. The species has been recorded from Central America, North America, and Oceania. As a member of the genus Altica, it possesses the enlarged hind femora characteristic of flea beetles that enable their distinctive jumping ability.
Altica woodsi
Altica woodsi is a species of flea beetle in the family Chrysomelidae, described by Isely in 1920. It is native to North America, with records from Canada (New Brunswick, Ontario, Québec) and the United States. The species is a specialist herbivore associated with woody vines in the grape family, feeding on riverbank grape (Vitis riparia) and Virginia creeper (Parthenocissus quinquefolia).
Amblycerini
Amblycerini is a tribe of seed beetles within the subfamily Bruchinae (Chrysomelidae), established by Bridwell in 1932. Members of this tribe are characterized by their association with seeds as developmental hosts. The genus Spermophagus, a well-studied member of this tribe, shows complex evolutionary patterns of host plant colonization. The tribe is taxonomically accepted and contains multiple genera of seed-feeding beetles.
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.
Amphelasma
Amphelasma is a genus of skeletonizing leaf beetles in the family Chrysomelidae, containing 11 described species. These beetles are distributed from Venezuela to Mexico, with one species extending into southern Arizona. The genus was established by Barber in 1947 and belongs to the tribe Luperini within the subfamily Galerucinae.
Amplioluperus
Amplioluperus is a genus of leaf beetles in the family Chrysomelidae. The genus comprises three described species: A. cyanellus, A. histrio, and A. maculicollis. The name refers to the relatively large body size of the type species compared to related genera.
Androlyperus incisus
Androlyperus incisus is a skeletonizing leaf beetle in the family Chrysomelidae, first described by Schaeffer in 1906. The species is distributed across Central America and North America. It belongs to a genus of leaf beetles whose members feed on plant foliage, creating distinctive skeletonized damage patterns. Observations of this species remain relatively sparse, with limited published documentation of its biology.
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.
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.
Aphthona
Spurge Flea Beetles
Aphthona is a genus of flea beetles in the leaf beetle family Chrysomelidae, native to Europe and Asia with approximately 135 species in the Palaearctic region and some 300 species worldwide. Members possess enlarged hind legs adapted for jumping, a characteristic trait of the tribe Alticini. The genus has gained significant attention for biological control applications, with several species introduced to North America to manage leafy spurge (Euphorbia esula), a major invasive weed. Six species—A. abdominalis, A. cyparissiae, A. czwalinae, A. flava, A. nigriscutis, and A. lacertosa—have been used for this purpose, though establishment success varies. Some African species have been identified as pests of Jatropha curcas in biodiesel plantations.
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.
Aphthona czwalinai
Aphthona czwalinai is a flea beetle species in the family Chrysomelidae, subfamily Alticinae. It belongs to a genus containing species used for biological control of leafy spurge (Euphorbia esula). The species is native to Eurasia and has been introduced to North America as part of classical biological control programs. Like other Aphthona species, it is a root-feeding specialist on Euphorbia plants.
Aphthona flava
Copper Leafy Spurge Flea Beetle
Aphthona flava is a flea beetle native to Eurasia, introduced to North America as a biological control agent for leafy spurge (Euphorbia esula). Adults are small, brown, and morphologically cryptic, closely resembling congeners A. cyparissiae and A. nigriscutis. The species has established populations in Manitoba, Canada, where it remains dominant at some release sites, though it is relatively scarce in North Dakota and Minnesota. Native populations occur across Hungary and Italy.
Aphthona lacertosa
Brown-legged Leafy Spurge Flea Beetle
Aphthona lacertosa is a root-feeding flea beetle native to Eurasia, introduced to North America as a biological control agent for leafy spurge (Euphorbia esula). It was first released in 1990 and more widely in 1997, specifically targeting wet habitats where herbicide use is restricted. The species has established populations in Manitoba, Saskatchewan, and Alberta. Adults are black and morphologically indistinguishable from A. czwalinae in field settings; larvae are the primary damaging stage.
Asiopus
Asiopus is a genus of leaf beetles in the family Chrysomelidae, currently treated as a synonym of Cryptocephalus. It was established by Lopatin in 1965 for certain Palaearctic species. The genus name continues to appear in some databases and literature due to historical usage. Species formerly placed in Asiopus share the general characteristics of Cryptocephalus, including compact bodies and enlarged hind femora.
Aulacothorax
Aulacothorax is a genus of leaf beetles comprising 51 described species distributed worldwide, with the highest diversity in the Indomalayan realm. The genus was historically misclassified among flea beetles (Alticini) due to superficially similar enlarged hind femora, but lacks the metafemoral spring that enables jumping. A 2023 phylogenetic study established its placement in the distinct tribe Serraticollini. The genus name dates to 1858, though the original type species was later reassigned, resulting in the synonymy of Orthaltica with Aulacothorax in 2017.
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.