Asparagus Beetle – Crioceris asparagi

Asparagus Beetle   Scientific Name: Crioceris asparagi Common Name:  Asparagus beetle, Common asparagus beetle Appearance: The asparagus beetle is an elongated, metallic-blue beetle, ranging in size from 6 to 9.5mm. The head is black, while the thorax is red. It also has yellow spots on its body and a pair of thick antennae. Host Plants or Food: Asparagus beetles only feed on asparagus plants, hence its name. The larva and the adult beetles feed exclusively on asparagus bark and foliage. Territory:  Throughout North America, Asia, and Europe Mode of Damage:  They are active leaf chewers and may also suck the plant sap from its bark. As a result, the leaves, stems, and twigs may be damaged. Habits and Life History: Since Asparagus beetles exclusively feed on asparagus plants, they are commonly found near asparagus fields and grasslands. They go dormant in winters under asparagus bark, stones, or even woody debris. Female beetles lay eggs during the Spring on the plant, which hatches into a larva. The females also secrete a thick adhesive to stick the eggs to the plant and protect them. After 2 to 3 weeks, the larvae fall on the ground, turning into a pupa and finally an adult. They complete their entire lifecycle in 22 to 41 days.