Adults are found on plants from May through July.
Mature larvae are small, green caterpillars with three dark stripes running the length of the body.
A. malherbae are visible when viewed under a microscope.
Native to Europe, Scotch broom grows on roadsides, pastures, open areas, and recently disturbed areas.
Native to Eurasia. Russian olive is a weed of gardens, roadsides, pastures, waterways, cropland, meadows, and seasonally moist open areas.
Native to Eurasia, myrtle spurge is a weed of gardens, dry natural hillsides, waste areas, and public lands.
Native to Asia and Africa, several cultivars of cogongrass are grown as ornamentals.
Damesrocket is sold in wildflower seed mixes and is desired for its sweet scent, as a cut flower, for its essential oil, and its attraction to butterflies.
Scotch thistle is native to Europe and eastern Asia.
Saltcedar was introduced from Eurasia and is found throughout the United States.