Pachybrachis gilberti
This record describes Pachybrachis gilberti (species). Recorded family: Chrysomelidae. Recorded order: Coleoptera.
Identification and Appearance

recognized by its narrow shape, almost purple coloration with yellow highlights, and bulging eyes. Type Locality: ARIZ: Cochise Co. Cave Cr. / Cyn., 3 mi. W Portal VIII-9-[20]00, / 5120ft. A. Gilbert & N. Smith / 31o53.023′N -109o10.715′W
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 AZ / Mex.
Diet and Behavior
Life History
Mimosa aculeaticarpa, A. constricta , and Quercus sp. were noted on labels as potential host plants in Arizona.
Additional species information
Species notes from the sources
Etymology: Pachybrachis gilberti Barney 2019
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Pachybrachis gilberti. 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.
Frequently Asked Questions About Pachybrachis gilberti
What is Pachybrachis gilberti?
Pachybrachis gilberti is a species in the family Chrysomelidae, within the order Coleoptera.
How do you identify Pachybrachis gilberti?
recognized by its narrow shape, almost purple coloration with yellow highlights, and bulging eyes.
Where is Pachybrachis gilberti found?
Range: se AZ / Mex.
What is the life cycle of a Pachybrachis gilberti?
Mimosa aculeaticarpa, A. constricta , and Quercus sp. were noted on labels as potential host plants in Arizona.
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