Chrysomelidae
Guides
Pachybrachis gilberti
Pachybrachis gilberti is a species of case-bearing leaf beetle in the family Chrysomelidae, described by Barney in 2019. The genus Pachybrachis contains numerous small, often colorful leaf beetles commonly known as 'scriptured leaf beetles' due to their frequently ornate elytral patterns. This species was documented during a 2021 collecting trip in southeastern Arizona, where specimens were attracted to ultraviolet and mercury-vapor light stations in mesquite-acacia scrub habitat. As a recently described species, detailed natural history information remains limited.
Pachybrachis gracilipes
Pachybrachis gracilipes is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Fall in 1915. It belongs to a genus of small, often cryptically colored leaf beetles commonly known as "scriptured leaf beetles" due to their intricate patterns. The species is documented from North America, though specific details about its biology and ecology remain limited in the available literature.
Pachybrachis hector
Pachybrachis hector is a case-bearing leaf beetle in the family Chrysomelidae, first described by Fall in 1915. It belongs to a genus of small leaf beetles known for their rounded, convex bodies and enlarged hind femora. The species is known from North America, though specific details about its biology and ecology remain poorly documented.
Pachybrachis hybridus
Red Split-necked Pachy
Pachybrachis hybridus is a species of case-bearing leaf beetle in the family Chrysomelidae. Commonly known as the Red Split-necked Pachy, this small beetle is found in Central America and North America. The genus Pachybrachis contains numerous species that are often challenging to distinguish, and many require expert identification.
Pachybrachis immaculatus
Pachybrachis immaculatus is a species of case-bearing leaf beetle in the family Chrysomelidae. The species was described by Jacoby in 1889. As a member of the genus Pachybrachis, it belongs to a group commonly known as scriptured leaf beetles, recognized for their often intricate elytral patterns. Very little specific information about this particular species has been documented in the available literature.
Pachybrachis jacobyi
Pachybrachis jacobyi is a species of case-bearing leaf beetle in the family Chrysomelidae. It was described by Bowditch in 1909. The species has been documented in the southwestern United States, particularly in Arizona, where it has been collected at light stations in mesquite-acacia scrub and oak-juniper woodland habitats. Like other members of the genus Pachybrachis, it is likely associated with woody vegetation, though specific host plant relationships remain poorly documented.
Pachybrachis kentuckyensis
Pachybrachis kentuckyensis is a species of case-bearing leaf beetle in the family Chrysomelidae, subfamily Cryptocephalinae. The genus Pachybrachis is a large North American group commonly known as "scriptured leaf beetles" due to the intricate patterns on their elytra. Species in this genus are typically small, compact beetles associated with various host plants. Pachybrachis kentuckyensis is one of many species in this taxonomically challenging genus that requires careful examination for identification.
Pachybrachis latithorax
Tamaulipan Freckled Pachy
Pachybrachis latithorax is a species of case-bearing leaf beetle in the family Chrysomelidae. It occurs in Central America and North America. The species belongs to a genus commonly known as 'scriptured leaf beetles' for their often intricate elytral patterns. Like other members of Pachybrachis, it is presumed to feed on foliage of various plants, though specific host associations remain poorly documented.
Pachybrachis lustrans
Pachybrachis lustrans is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by John Lawrence LeConte in 1880. The species is distributed across Central America and North America. As a member of the genus Pachybrachis, it belongs to a group commonly known as scriptured leaf beetles, recognized for their often ornate elytral patterns. Specific ecological details for this species remain poorly documented in published literature.
Pachybrachis m-nigrum
Pachybrachis m-nigrum is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Melsheimer in 1847. The specific epithet 'm-nigrum' refers to a distinctive black marking shaped like the letter 'M' on the elytra. Like other members of the genus Pachybrachis, it constructs protective cases from fecal material. The species is documented from eastern Canada and has been recorded in the southwestern United States.
Pachybrachis macronychus
Pachybrachis macronychus is a case-bearing leaf beetle in the family Chrysomelidae. The species was described by Fall in 1915. It is known from North America. Like other members of the genus, it likely inhabits vegetation in arid and semi-arid regions, though specific ecological details remain poorly documented.
Pachybrachis madera
Pachybrachis madera is a species of flea beetle in the family Chrysomelidae, described by Robert J. Barney in 2019. The species epithet refers to Madera Canyon in the Santa Rita Mountains of Arizona, the type locality where specimens were collected. Like other members of the genus Pachybrachis, it belongs to the subfamily Cryptocephalinae. The species is known from oak-juniper woodland habitats in southeastern Arizona.
Pachybrachis marginatus
Pachybrachis marginatus is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Bowditch in 1909. It belongs to the subfamily Cryptocephalinae, a group known for larvae that construct and carry protective cases from fecal material and shed exoskeletons. The species is native to North America.
Pachybrachis marmoratus
Pachybrachis marmoratus is a species of case-bearing leaf beetle in the family Chrysomelidae. The genus Pachybrachis comprises small, convex beetles that construct protective cases from fecal material and shed exuviae, a trait shared with other members of the subfamily Cryptocephalinae. This species occurs in both Central America and North America.
Pachybrachis melanostictus
Pachybrachis melanostictus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America, with documented records from Canada including Alberta, British Columbia, and Manitoba. The species belongs to a genus of small leaf beetles commonly known as scriptured leaf beetles.
Pachybrachis minor
Pachybrachis minor is a small leaf beetle in the family Chrysomelidae, described by Bowditch in 1909. The genus Pachybrachis contains numerous species of flea beetles and leaf beetles found primarily in North America. This species is recorded from western Canada including British Columbia and Manitoba.
Pachybrachis mobilis
Pachybrachis mobilis is a case-bearing leaf beetle in the family Chrysomelidae, first described by Fall in 1915. The species belongs to a genus of small, often colorful beetles known for their hardened forewings that protect the hindwings and abdomen. It is native to North America. Available information on this species is limited, with only two observations recorded on iNaturalist.
Pachybrachis nigricornis
Pachybrachis nigricornis is a species of case-bearing leaf beetle in the family Chrysomelidae, originally described by Thomas Say in 1824 as Cryptocephalus nigricornis. The species is distributed across North America and Central America, with records from Canada (Alberta) through the United States. It belongs to a large genus of small, often colorful leaf beetles commonly known as 'scriptured leaf beetles' due to their intricate elytral patterns. Four subspecies are currently recognized.
Pachybrachis nigricornis autolycus
Pachybrachis nigricornis autolycus is a subspecies of leaf beetle in the family Chrysomelidae, described by Fall in 1915. It belongs to the genus Pachybrachis, a group of small, often colorful leaf beetles commonly known as "scriptured leaf beetles" due to their intricate patterns. The subspecies is recognized as accepted in taxonomic databases and has been documented in North America and Middle America, with specific records from Alberta, Canada.
Pachybrachis nigricornis difficilis
Pachybrachis nigricornis difficilis is a subspecies of flea beetle in the family Chrysomelidae, described by Fall in 1915. It belongs to a genus of small leaf beetles commonly known as 'scriptured leaf beetles' due to the intricate patterns often found on their elytra. The subspecies designation suggests geographic or morphological differentiation from the nominate form, though specific distinguishing characteristics remain poorly documented in available literature.
Pachybrachis nobilis
Pachybrachis nobilis is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Fall in 1915. It belongs to a genus of small, often colorful beetles commonly known as scriptured leaf beetles. The species is recorded from North America, though specific details regarding its biology and ecology remain limited in the available literature.
Pachybrachis obsoletus
Pachybrachis obsoletus is a species of case-bearing leaf beetle in the family Chrysomelidae. It belongs to a genus known for constructing protective larval cases from fecal material. The species has been recorded across North America, with confirmed observations in Canada including Alberta, British Columbia, and Manitoba.
Pachybrachis othonus
Legume Case-bearing Leaf Beetle
Pachybrachis othonus is a case-bearing leaf beetle in the family Chrysomelidae, commonly known as the Legume Case-bearing Leaf Beetle. The species was described by Thomas Say in 1825 and is native to North America. It belongs to a genus characterized by larvae that construct protective cases from fecal material and shed skins.
Pachybrachis othonus pallidipennis
Pachybrachis othonus pallidipennis is a subspecies of flea beetle in the family Chrysomelidae. It is a small leaf beetle with limited available documentation. The subspecies was described by Suffrian in 1858. Records indicate presence in North America. Specific biological details for this subspecies are poorly documented in available sources.
Pachybrachis othonus sioux
Pachybrachis othonus sioux is a subspecies of case-bearing leaf beetle described by Balsbaugh in 1973. It belongs to the genus Pachybrachis, a diverse group of small, convex leaf beetles commonly known as scriptured leaf beetles. The subspecies epithet "sioux" suggests an association with the northern Great Plains region inhabited by the Sioux people. As a member of Chrysomelidae, it shares the family characteristics of herbivorous feeding and compact body form.
Pachybrachis pectoralis
A case-bearing leaf beetle in the family Chrysomelidae, first described by Melsheimer in 1847. It is one of numerous small, rounded leaf beetles in the genus Pachybrachis, commonly referred to as script-bearing leaf beetles due to the often intricate markings on their elytra. The species occurs in North America, with records from Canada (Ontario, Québec) and the United States. Like other members of its genus, it likely feeds on various herbaceous plants and shrubs.
Pachybrachis petronius
A species of flea beetle in the family Chrysomelidae, described by Fall in 1915. The species has been documented in the southwestern United States, specifically in Arizona, where it has been collected at light stations in mesquite/acacia scrub habitat. Like other members of the genus Pachybrachis, it is likely associated with woody vegetation.
Pachybrachis picturatus
Pachybrachis picturatus is a small leaf beetle in the family Chrysomelidae, subfamily Cryptocephalinae. The genus Pachybrachis contains numerous small, often colorfully patterned species commonly known as case-bearing leaf beetles due to the larval habit of constructing protective cases from fecal material. This species was described by Germar in 1824 and occurs in North America.
Pachybrachis postfasciatus
Pachybrachis postfasciatus is a species of case-bearing leaf beetle described by Fall in 1915. It belongs to the family Chrysomelidae, a large group of herbivorous beetles commonly known as leaf beetles. The species is documented from North America. Like other members of the genus Pachybrachis, it is likely associated with vegetation in its habitat, though specific ecological details remain poorly documented.
Pachybrachis pusillus
Bulge-eyed Yellow Pachy
Pachybrachis pusillus is a small leaf beetle in the family Chrysomelidae, subfamily Cryptocephalinae. The species is known from the southwestern United States and Mexico. Adults have been collected at light traps in mesquite-acacia scrub and oak-juniper woodland habitats in Arizona. The common name "Bulge-eyed Yellow Pachy" refers to distinctive eye morphology and coloration typical of the genus.
Pachybrachis quadratus
Pachybrachis quadratus is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Fall in 1915. It is found in North America. Members of the genus Pachybrachis are commonly known as "scriptured leaf beetles" due to the intricate patterns on their elytra. The species has been documented in field collections from mesquite and oak habitats in the southwestern United States.
Pachybrachis signatifrons
Pachybrachis signatifrons is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in North America. The species was described by Mannerheim in 1843. Like other members of its genus, it belongs to the subfamily Cryptocephalinae, which are characterized by larvae that construct and carry protective cases.
Pachybrachis signatus
Pachybrachis signatus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is a small beetle within the diverse genus Pachybrachis, which comprises numerous North American species often difficult to distinguish without close examination. The species was described by Bowditch in 1909. Available records indicate it occurs in North America, though specific ecological details remain poorly documented.
Pachybrachis snowi
Pachybrachis snowi is a species of case-bearing leaf beetle in the family Chrysomelidae. It is native to North America. The species was described by Bowditch in 1909. Beyond its taxonomic placement and geographic occurrence, detailed biological information about this species remains limited in available sources.
Pachybrachis sonorensis
Finely-punctate Sonoran Pachy
Pachybrachis sonorensis is a species of case-bearing leaf beetle in the family Chrysomelidae, described by Jacoby in 1889. It is native to North America, with records from the southwestern United States and adjacent regions. The species belongs to a large genus of small leaf beetles characterized by their rounded, convex body form and enlarged hind femora.
Pachybrachis stygicus
Pachybrachis stygicus is a small leaf beetle in the family Chrysomelidae, first described by Fall in 1915. The genus Pachybrachis is part of the tribe Pachybrachini, commonly known as the scriptured leaf beetles for their often intricate elytral patterns. The species epithet 'stygicus' derives from Greek mythology, referring to the river Styx, suggesting dark or gloomy coloration. Records indicate presence in North America, with observations documented in the southwestern United States.
Pachybrachis tacitus
A small leaf beetle in the family Chrysomelidae, described by Fall in 1915. Like other members of the genus Pachybrachis, this species is part of a diverse group of case-bearing leaf beetles found in North America. The species is documented from limited collection records, with observations spanning the southwestern United States.
Pachybrachis texanus
Tall Texas Pachy
Pachybrachis texanus is a species of case-bearing leaf beetle in the family Chrysomelidae. It is found in Central America and North America. The species is relatively poorly documented, with approximately 80 observations recorded on iNaturalist. It belongs to a genus of small leaf beetles known for their rounded, convex body form and often colorful or patterned elytra.
Pachybrachis texasensis
Pachybrachis texasensis is a species of case-bearing leaf beetle in the family Chrysomelidae, described by Robert J. Barney in 2021. The species is part of the diverse genus Pachybrachis, which contains numerous small, often colorful beetles associated with various host plants. As a recently described species, detailed biological information remains limited.
Pachybrachis trinotatus
Pachybrachis trinotatus is a species of case-bearing leaf beetle in the family Chrysomelidae, first described by Melsheimer in 1847. The species is distributed across North America, with records from Canada (Ontario and Québec) and the United States. As a member of the genus Pachybrachis, it belongs to a group commonly known as scriptured leaf beetles, characterized by their compact bodies and often patterned elytra. Specific ecological details about this species remain limited in published literature.
Pachybrachis turbidus
Robust Plains Pachy
Pachybrachis turbidus is a species of leaf beetle in the family Chrysomelidae, commonly known as the Robust Plains Pachy. It belongs to a large genus of small, often colorful leaf beetles found primarily in North America. The species has been documented through 386 iNaturalist observations, indicating it is moderately well-observed but not extensively studied in the scientific literature.
Pachybrachis turgidicollis
Pachybrachis turgidicollis is a species of case-bearing leaf beetle in the family Chrysomelidae. It has been documented in North America, specifically recorded from Arizona and Texas. The species was described by Fall in 1915. Like other members of the genus, it belongs to the tribe Pachybrachini, which are known for their compact bodies and enlarged hind femora.
Pachybrachis uteanus
A case-bearing leaf beetle in the family Chrysomelidae, described by Fall in 1915. The species is known from North America. As a member of the genus Pachybrachis, it belongs to a group commonly referred to as case-bearing leaf beetles due to the habit of larvae constructing protective cases from fecal material and shed skins.
Pachybrachis varians
Pachybrachis varians is a species of case-bearing leaf beetle in the family Chrysomelidae, described by Bowditch in 1909. The genus Pachybrachis belongs to the subfamily Cryptocephalinae, a group known for larvae that construct protective cases from fecal material and exuviae. Like other members of this genus, P. varians is likely small in size and associated with specific host plants, though detailed biological information for this particular species remains limited. The species occurs in North America.
Pachybrachis vau
Pachybrachis vau is a species of case-bearing leaf beetle in the family Chrysomelidae, described by Fall in 1915. The genus Pachybrachis comprises numerous small, often colorful leaf beetles commonly known as 'scriptured leaf beetles' due to their intricate elytral patterns. Like other members of this genus, P. vau is likely associated with specific host plants, though detailed biological information for this particular species remains limited.
Pachybrachis vulnerosus
A species of case-bearing leaf beetle in the family Chrysomelidae, described by Fall in 1915. It belongs to the tribe Pachybrachini, a group known for their hardened, case-like elytra that protect the abdomen. The species is found in North America, with specific records from the southwestern United States including Arizona.
Pachybrachis xanti
Split-neck Creosote Pachy
Pachybrachis xanti is a case-bearing leaf beetle in the family Chrysomelidae. The species is commonly known as the "Split-neck Creosote Pachy" and has been documented in North America and Middle America. Like other members of the genus Pachybrachis, it carries a protective case constructed from fecal material and exuviae.
Pachybrunneus
Pachybrachis brunneus is a species of case-bearing leaf beetle in the family Chrysomelidae. The species is found in North America. As a member of the genus Pachybrachis, it belongs to a group of small leaf beetles commonly known as scriptured leaf beetles, recognized for their often intricate elytral patterns.
Pachyonychis
A genus of flea beetles (family Chrysomelidae) established by H. Clark in 1860, containing a single described species, Pachyonychis paradoxa. The genus name has been subject to taxonomic confusion due to its similarity to the related genus Pachyonychus.
Pachyonychus
Pachyonychus is a genus of flea beetles in the family Chrysomelidae, established by F.E. Melsheimer in 1847. The genus contains a single described species, P. paradoxus, from the United States. The genus name is notably similar to Pachyonychis, a different flea beetle genus containing P. paradoxa, which was named in 1860 and occurs on the same host plant. This nomenclatural similarity has caused historical confusion between the two taxa.