Nymph of an assassin bug

7025.      This was crawling in my office today. What is it? Looked like a pile of dust moving across the ground. Lafayette, Colorado. United States

Number 7025. This is a nymph of an assassin bug known as a masked hunter (Reduvius personatus; Hemiptera/Heteroptera: Reduviidae), a cosmopolitan species often found indoors and reputed to have a very painful ‘bite’- Click here for more detailed information.