Two adults and a nymph of the brown marmorated stink bug, Halyomorpha halys Ståhl, feeding on one of its main hosts, princess tree in Allentown, Pennsylvania. Characteristic feeding damage of the brown marmorated stink bug is also evident. Late instar nymphs of leaf-footed bugs (Hemiptera: Coreidae) are often mistakenly submitted as brown marmorated stink bug samples. The Coreidae pictured is probably the western conifer seed bug, Leptoglossus occidentalis Heidemann.