Pselliopus barberi is a species of assassin bug belonging to the family Reduviidae. It is commonly found in North America, particularly in the southwestern United States. This insect is known for its elongated body, ranging from 12 to 15 mm in length, and its distinctive reddish-brown coloration. Pselliopus barberi is a predatory insect that feeds on other insects, using its sharp beak to inject venom and suck out their bodily fluids.