Sensory organs in larvae of Symphyta (Hymenoptera, Symphyta) species [Russian]

摘要

The studies of larvae in 16 Symphyta species by electron microscopy showed that sensory organs on antennae were represented as small basiconic sensillae and papillae and also shallow hollows innervated by 2-7 sensory cells. There are pore plates on an apical segment of the Allatus sp. larva antenna. The ultrastructure of them attests to their belonging to olfactory receptors. Two groups of sensory structures, including basiconic and trichoid sensillae and also papillae, were distinguished on apical segments of maxillary and labial palps. On a subapical segment of larva maxillary palps, digitiform sensillae are located. The position of the families investigated at the base of the Hymenoptera phylogenetic tree may testify that a relatively simple organization of the sensory apparatus of antennae and mouthparts appendages in Symphyta larvae is original.