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Morphology of antennal sensilla auricillica and their detection of plant volatiles in the Herald moth, Scoliopteryx libatrix L. (Lepidoptera: Noctuidae)

2000; Elsevier BV; Volume: 29; Issue: 1 Linguagem: Inglês

10.1016/s1467-8039(00)00011-6

1873-5495

Peter Anderson, Eric Hallberg, Mitko Subchev,

Insect and Arachnid Ecology and Behavior

In the Herald moth Scoliopteryx libatrix there are single superficial auricillic sensilla, as well as groups of s. auricillica located in cavities on the antennae. Two sensory neurones, with different dendrite diameters innervate each of these sensilla. The diameter of the smaller dendritic segment is roughly half that of the larger one. The larger dendritic outer segment branches profusely in the lumen of the sensillum, whereas the smaller dendrite has few branches. Electrophysiological recordings from s. auricillica located in the medial part of the cavity revealed a receptor neurone responding to Δ-3-carene. In addition to these neurones, recordings made deeper and more laterally into the cavity showed neurones that responded to (±)-linalool, α-pinene and green leaf volatiles.