SENSORY ORGANS ON THE ANTENNAE OF MICROPTERIX-CALTHELLA L (LEPIDOPTERA, MICROPTERIGIDAE)

Antennal sensilla of Micropterix calthella were studied with the scann ing electron microscope to determine their morphological types, relati ve abundance, distribution, location and possible functions. Of the 12 types occurring in both male and female moths, seven are found in mos t higher Lepidoptera: sensilla trichodea, multiporous s. basiconica, a . coeloconica, s. styloconica, s. chaetica, s. campaniformia and Bohm' s bristles. Two types (uniporous s. basiconica and cupuliform organs) are found only in a few families. Three structures are peculiar to Mic ropterix: ascoid sensilla, multiporous s. placodea and circular organs . All types of sensilla have characteristic distribution and location pattern similar in both sexes. (C) 1997 The Royal Swedish Academy of S ciences.