Section 4
Chapter 3,361

Antennal sensilla of the ground beetle Bembidion lampros Hbst (Coleoptera, Carabidae)

Merivee, E.; Ploomi, A.; Rahi, M.; Luik, A.; Sammelselg, V.

Acta Zoologica 81(4): 339-350


ISSN/ISBN: 0001-7272
DOI: 10.1046/j.1463-6395.2000.00068.x
Accession: 003360557

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Antennal sensilla typology, number and distribution pattern were studied in the ground beetle Bembidion lampros Hbst (Coleoptera, Carabidae) using scanning electron microscopy. The 1.6-1.8 mm long filiform antennae of both sexes consist of the scape, pedicel and of the flagellum composed of nine flagellomeres. In both sexes, three types of sensilla chaetica, two types of sensilla trichodea, five types of sensilla basiconica, one type of sensilla coeloconica, one type of sensilla campaniformia and Bohm sensilla were distinguished. The possible function of the sensilla was discussed and three types of sensilla were considered as olfactory, sensilla trichodea type 2 and sensilla basiconica types 1 and 2. Olfactory sensilla occupy dorsal and/or ventral areas of the flagellomeres and occur sparsely (sensilla basiconica type 1) or not at all (sensilla basiconica type 2 and sensilla trichodea type 2) outside these areas. No remarkable sexual differences in the types, numbers and distribution of antennal sensilla were found.

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