Subject: Cricket or grasshopper?
Location: Colorado front range between 5000 and 7000 feet
July 6, 2013 10:41 am
We recently found thousands of these in the foothills in southern colorado. None of the locals have ever seen these before. At night they climb the walls of buildings and come to the ground around mid-morning. They make a sort of buzzing noise.
This appears to be a Mormon Cricket, Anabrus simplex, which you may compare to an image posted to BugGuide. Despite its common name, the Mormon Cricket is actually a Shieldbacked Katydid and not a true Cricket. According to BugGuide: “Though flightless, this species can form agriculturally destructive “bands” (swarms)” and “Common name refers to invasion of agricultural lands farmed by Mormon settlers in the Great Salt Lake Basin in the 19th century, especially an outbreak in 1848.” The Mormon Cricket is variable in coloration. Many old texts depict black individuals, but they may also be brown or green.