Dilemmatic key for the recognition of the three larval stages of Chrysopa lanata lanata (Banks) (Neurop. Chysopidae)

Abstract

?Dilemmatic key for the recognition of the three larval stages of Chrysopa lanata lanata (Banks) (Neurop. Chysopidae)?

With the purpose to establish the close relation between different ages of Chrysopa lanata lanata and its preys, a dilemmatic key was constructed and illustrated with drawings, to recognize the three instars larvae. The study is based on the morphological characters used by Tauber (1974) for the systematics of North American chrysopid larval studies. The following elements are considered: lateral and dorsal setiferous tubercles of abdomen, dorsolateral setiferous tubereles of the thorax, number of setae and different colored marks of the head.