Pachybrachis armbrusti
This record describes Pachybrachis armbrusti (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.
Identification and Appearance
Pronotal M moderate to heavy, black to reddish orange and sharply outlined, finely alutaceous and shiny, punctation sparse and widely separated (last key couplet) Det. E. G. Riley, 2026 Type Locality: Haulover, Fla, Hubbard & Schwarz, litigiosus Suffr / Fall 1915 Revis Paratypes: 100♂♂ 153♀♀ (must not be coming to lights)
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Chrysomeloidea
- Family
- Chrysomelidae (Leaf Beetles)
- Subfamily
- Cryptocephalinae
- Tribe
- Cryptocephalini
- Genus
- Pachybrachis (Scriptured Leaf Beetles)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
se.US - most heavily concentrated in Florida, reaching west to coastal Alabama and north to North Carolina, with a former (pre-1915) disjunct population in coastal New Jersey
Diet and Behavior
Diet: One female spmn coll'ed in Alabama w/ label “Taken on Alnus ”.
Additional species information
Species notes from the sources
Etymology: Pachybrachis armbrusti Barney, 2016
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Pachybrachis armbrusti. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Photos of Pachybrachis armbrusti (4)
Photo credits: Contributed by Mike Quinn
Frequently Asked Questions About Pachybrachis armbrusti
What is Pachybrachis armbrusti?
Pachybrachis armbrusti is a species in the family Chrysomelidae, within the order Coleoptera.
How big is Pachybrachis armbrusti?
| Feature | Details |
|---|---|
| Length | male: 2.1–2.6 mm (mean = 2.4 mm, n = 10) |
| Female | 2.5–3.2 mm (mean = 2.9 mm, n = 10) |
How do you identify Pachybrachis armbrusti?
Pronotal M moderate to heavy, black to reddish orange and sharply outlined, finely alutaceous and shiny, punctation sparse and widely separated (last key couplet) Det. E. G. Riley, 2026
Where is Pachybrachis armbrusti found?
Range: se.US - most heavily concentrated in Florida, reaching west to coastal Alabama and north to North Carolina, with a former (pre-1915) disjunct population in coastal New Jersey
What does Pachybrachis armbrusti eat?
The diet of the Pachybrachis armbrusti includes One female spmn coll'ed in Alabama w/ label Taken on Alnus ..