Oecanthus quadripunctatus This video shows a male Four-spotted tree cricket singing. This species has a slow song pulse rate, and in this instance the temperature was cool enough to cause a rate of 30 pulses per second. The reason it looks like his wings are not moving much is because the video was taken at a frame rate of 30 frames per second….which led to this optical illusion. When this species is young, they are a yellowish color with a thick dark brown strip down the center. When a bit colder, the brown gets lighter. By the fourth instar stage, the tree cricket is all green. Adults are pale green – with no black, brown or grey. An easy way to tell Four-spotted vs an all green Forbes’ or Black-horned is by the appearance of the ventral surface of the abdomen. Four-spotted is creamy white; Forbes’ and Black-horned have mahogony or black. To read the original description for this species: https://www.biodiversitylibrary.org/item/86428#page/278/mode/1up