I have looked all over the internet trying to find out what insect this is with no luck so far. I have found these on my tomato seedling. This is about 1/4" (5mm) long and about 1/16" (2mm) tall. I have also seen some that were a little bit smaller. I try not to kill beneficial insects and I am interested to see if this is a beneficial or a detrimental insect or just what it is. Thank you in advance.
Treehopper nymph - http://insects.tamu.edu/images/insects/common/images/cd-45-a/Img0085.jpg
sap feeder; not usually a serious garden pest -
Thank you for the solution Flapdoodle.
