Found on red bud. Ants were interacting with them.
Alternately arranged leaf pattern, purple leaves, woody stem (lacking herbaceous feeling)
Flew onto this leaf as a bright yellow blur. Would love a more specific ID.
INVASIVE SPECIES ALERT: This insect has been seen in large numbers at the Carnegie Mellon University, which is located in Pittsburgh, Pennsylvania. Methods on eradicating this insect must be researched and utilized in order to protect the ecosystem.
Cutouts from leaf cutter bees. Solitary bees, pollinate alfalfa. Small with black and white stripes. . On Redbud tree.