Agrilus cuprescens

Agrilus cuprescens can be distinguished from most North American Agrilus by its association with rose stems and its introduced Palearctic origin. Among the six recognized subspecies, the nominate subspecies A. c. cuprescens is most widespread. Accurate identification to species level typically requires examination of male genitalia due to the morphological similarity among Agrilus species. The species exhibits typical Agrilus morphology: elongate body with metallic coloration, short antennae, and tarsal formula 5-5-5.

Associated with rose-dominated habitats including cultivated rose gardens, wild rose thickets, and riparian areas supporting Rosa species. In its native European range, occurs in temperate broadleaf and mixed forest zones. In North America, found in anthropogenic habitats with introduced roses as well as naturalized populations in suitable climates.

Native to Europe and Northern Asia (excluding China). Introduced and established in North America, with records from eastern and western United States including a documented population in Washington State. GBIF distribution records indicate presence across multiple biogeographic realms including Nearctic, Palearctic, and Indomalaya, though these may reflect both native range and introduced populations.

• Rosa spp. - larval hostPrimary larval host; larvae develop in stems and exhibit girdling behavior
• Other Rosaceae - potential larval hostSuspected based on typical Agrilus host patterns but not yet confirmed

Larvae exhibit stem girdling behavior on rose hosts, a distinctive feeding pattern that gives the species its common name. This behavior involves tunneling around the circumference of stems, potentially causing structural damage to host plants.

Serves as host for the parasitoid wasp Baryscapus rugglesi (Hymenoptera: Eulophidae), which has been documented in western North America. As a stem-boring beetle, contributes to nutrient cycling through wood decomposition, though its primary ecological impact in North America is as an introduced species associated with cultivated and ornamental roses.

Considered a pest of cultivated roses due to larval stem girdling, which can damage or kill canes. The species' introduction to North America likely occurred through horticultural trade. Its common names reflect both its host association (rose stem girdler) and appearance (bronze cane borer).

• Other Agrilus speciesMorphologically similar; A. cuprescens distinguished by host association with Rosa and Palearctic origin in North American context
• Agrilus rubronigerBoth occur in similar habitats and may be confused, but A. rubroniger is native to North America and associated with different hosts

• introduced species
• pest
• rose pest
• stem borer
• girdler
• Palearctic origin

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• Lycidae | Beetles In The Bush
• Two new species of Agrilus from Mexico | Beetles In The Bush
• Agrilus fuscipennis on Persimmon | Beetles In The Bush
• GBCT Beetle #2: Agrilus walsinghami | Beetles In The Bush
• North America’s Most Beautiful Agrilus Jewel Beetle | Beetles In The Bush
• A flower visiting jewel beetle that is not an Acmaeodera | Beetles In The Bush
• Agrilus cuprescens(Ménétries) (Coleoptera: Buprestidae), the Rose Stem Girdler, Discovered in the State of Washington, with Comments on Host Plant Associations
• Baryscapus rugglesi (Rohwer, 1919) (Hymenoptera: Eulophidae) discovered in western North America: Redescription, notes on biology, and implications as a parasitoid of its host, Agrilus cuprescens (Ménétries, 1832) (Coleoptera: Buprestidae)