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2009年46 No.5
Observation on the antennal sensilla of Blattella germanica with scanning electron microscope.
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Key Words：Blattella germanica, antennal sensilla, scanning electron microscope, morphologic, distribution
Abstract： Antennal sensilla of adult and nymph
Blattella germanica（L.）were ob
served by scanning electron microscope. It was found that there were a large number of sensilla on the antennas; they are sensilla chaetica (type I and II), sensilla basiconica, trichoid sensilla, cambered sensilla, campaniformia sensilla, marginal sensillum, and elliptical sensilla. Among of them, six sensilla, i.e. chaetic sensillum I and II, sensilla basiconica, trichoid sensilla, cambered sensilla and marginal sensillum, were found in the insect in all stages. Hat block sensillum was only found on adults. Male and female adults have all types of sensilla. The antenna of mature nymph beared most segments, while young nymph's sensilla had minimum length and base diameter.