First report of the darkling beetle, Opatroides punctulatus Brullé, 1832 (Coleoptera, Tenebrionidae) in Idaho, USA, an expanding adventive species in the Pacific Northwest

Opatroides punctulatus Brullé, 1832 is a detritivore tenebrionid beetle native to the Old World that was detected in the United States over 20 years ago. It is well adapted to Mediterranean climates between 30°N and 45°N, characterized by hot, dry summers and cool, wet winters. We confirm the presence of this species in south‑west Idaho. This work expands its distribution range >500 km northeast from the previous report. Opatroides punctulatus could become a common pest and even displace native Tenebrionidae species.