THE ULTRASTRUCTURE, MORPHOLOGY AND DISTRIBUTION OF SENSILLA ON THE ANTENNAE OF THE ADULT PARASITOIDS ALEOCHARA-BILINEATA GYLL, AND ALEOCHARA-BIPUSTULATA L (COLEOPTERA, STAPHYLINIDAE)

The morphology and distribution of the antennal sensilla, of adult Ale ochara bilineata and A. bipustulata (Coleoptera: Staphylinidae), impor tant rove beetle predator-parasitoids of root flies, have been examine d. The antennae of both sexes and both species are identical. A detail ed ultrastructural study was conducted on the adult antenna of A. bili neata, on this basis, there are 3 main classes of olfactory receptors: basiconic sensilla in rimmed-pits, small basiconic pegs, containing 1 -4 sensory dendrites, divided into 3 subclasses, and large basiconic p egs, containing a single dendrite. There are also 5 classes of mechano receptors; a single class of gustatory receptor, double-walled spoked hairs, non-porous sensilla, and coeloconic receptors of unknown functi on. Copyright (C) 1996 Elsevier Science Ltd.