Nymph of an Elm Seed Bug

6421. They are insane outside my house and starting to come inside would like to know what kind of bug this is. They started about last week June 17ish, they’re hiding along door frames and widows. Lundar, Manitoba. Canada

Number 6421. This is a nymph of an elm seed bug, Arocatus melanocephalus (Hemiptera/Heteroptera: Lygaeidae). This is an introduced species that had become a serious nuisance pest in many areas of North America. Click here for more detailed information.