-Animals (Kingdom Animalia)

-Arthropods (Phylum Arthropoda)

-Hexapods (Subphylum Hexapoda)

-Insects (Class Insecta)

-Winged and Once-winged Insects (Subclass Pterygota)

-Beetles (Order Coleoptera​​)

-​Water, Rove, Scarab, Long-horned, Leaf, and Snout Beetles (Suborder Polyphaga)

-Elateriform Beetles (Infraorder Elateriformia)

-Superfamily Buprestoidea

-Jewel Beetles Family (Buprestidae)

-Subfamily Agrilinae

-Tribe Agrilini

-Genus Agrilus

-Agrilus catherinae

This species has the classic Agrilus form: a narrow, tapering body that becomes pointed toward the rear, with smooth, tightly fitted wing covers (elytra) and a relatively small head. The surface may appear glossy or finely textured, and the coloration can shift depending on lighting, giving it a muted jewel-like sheen rather than the bold brilliance of some larger buprestids. A. catherinae is associated with woody plants, as are most Agrilus species. The larvae are wood-borers, living beneath the bark or within stems, where they feed on plant tissues and create winding galleries. Adults are typically found on or near host plants, where they may feed on leaves or bark and are often active in sunlit conditions.