Antenna morphology and sensilla ultrastructure of Tetrigus lewisi Candeze (Coleoptera: Elateridae)

作者：Ren, Li-Li; Wu, Ying; Shi, Juan; Zhang, Lu; Luo, You-Qing^*

来源：Micron, 2014, 60: 29-38.

DOI：10.1016/j.micron.2014.01.005

• Tetrigus lewisi Candeze
• Antenna morphology
• Sensilla ultrastructure
• Scanning electron microscopy
• Transmission electron microscopy

We used scanning and transmission electron microscopy to study the typology, morphology, distributions, and ultrastructures of the antennal sensilla of Tetrigus lewisi Candeze, a predatory click beetle that feeds on longhorned beetles, such as, Monochamus alternatus (Coleoptera: Cerambycidae). We observed eight types of sensilla on the antennae, including sensilla chaetica (with three subtypes: ch.1, ch.2, ch.3), sensilla basiconica (subtypes: ba.1, ba.2, ba.3), sensilla trichodea (subtypes: tr.1, tr.2), as well as sensilla auricillica, sensilla coeloconica, sensilla campaniformia, sensilla styloconica and Bohm's bristles. Significant sexual dimorphism was found in the antenna morphology, as well as in the density of type 2 sensilla trichodea and type 1 sensilla basiconica. We observed thick cuticular walls on sensilla chaetica, sensilla trichodea and sensilla campaniformia; clear pore structures on sensilla trichodea, sensilla basiconica and sensilla auricillica; and double walls with spoke-channels on sensilla coeloconica. The chemoreception, mechanoreception and thermo-/hygro-reception functions were deduced from fine structures on the cuticular walls and the dendrites of the different sensilla types. We suggest that all these sensilla have important roles in the host location, mating and predatory behavior of T. lewisi.

• 出版日期2014-5
• 单位北京林业大学