ALTERATION IN SEARCHING BEHAVIOR OF ADULT FEMALE GREEN LACEWINGS CHRYSOPERLA-CARNEA (NEUR, CHRYSOPIDAE) FOLLOWING CONTACT WITH HONEYDEW OF THE BLACK-SCALE SAISSETIA-OLEAE (HOM, COCCIDAE) AND SOLUTIONS CONTAINING ACIDHYDROLYSED L-TRYPTOPHAN

Following antennal contact with the honeydew of the black scale (Saiss etia oleae Olivier), female adult green lacewings (Chrysoperla carnea Stephens) showed a reduced mean walking speed (inverse orthokinesis), an increased mean turning frequency (positive klinokinesis), and an in creased mean turning angle. Similar, but generally less pronounced, be havioural changes occurred after contact with solutions of acid hydrol ysed L-tryptophan and water. Reduced walking speed, lower mean turning frequency and increased mean turning angle were also observed in inse cts exposed to honeydew during the period prior to antennal contact wi th the honeydew. The observed alterations in behaviour in response to honeydew could increase the likelihood of both honeydew and prey being located in the field.