Elasmostethus tristriatus, the juniper shieldbug, is a species of bugs in the family Acanthosomatidae. The species are green coloured with pinkish-red corium. They are in length and are active during warm months. They mate during spring. The larvae feed on berries, while adults feed on juniper. They also feed on Lawson's cypress.
The larvae appears from JuneâÂÂSeptember after which, the nymphs emerge. The nymphs have 4 stages until adulthood.