Morphology of antennal sensilla of the brown spruce longhorn beetle, Tetropium fuscum (Fabr.) (Coleoptera: Cerambycidae).
The antennal sensilla of the brown spruce longhorn beetle, Tetropium fuscum (Fabr.) (Coleoptera: Cerambycidae) were examined with particular focus on the sensilla present on the apical flagellomere. T. fuscum antennae are composed of 11 segments, namely the scape, pedicel, and nine flagellomeres. Nine types of sensilla were observed: three types of sensilla chaetica, sensilla trichodea, two types of sensilla basiconica, grooved peg sensilla, thick-walled sensilla, and Böhm bristles. Seven of these types were present on the apical flagellomere, the exceptions were sensilla chaetica type 3 and Böhm bristles. There were no significant differences in the distribution or density of sensilla present on the ninth flagellomere of males and females, except that males had significantly more sensilla chaetica type 1, which are put forward as the putative contact chemoreceptors for T. fuscum.
Department of Biology, Acadia University, 33 Westwood Ave., Wolfville, Nova Scotia B4P 2R6, Canada; Natural Resources Canada, Canadian Forest Service-Atlantic Forestry Centre, PO Box 4000, Fredericton, New Brunswick E3B 5P7, Canada. Electronic address: 085991m@acadiau.ca.
Colin A
CA
MacKay
Natural Resources Canada, Canadian Forest Service-Atlantic Forestry Centre, PO Box 4000, Fredericton, New Brunswick E3B 5P7, Canada.
Jon D
JD
Sweeney
Department of Biology, Acadia University, 33 Westwood Ave., Wolfville, Nova Scotia B4P 2R6, Canada.
N Kirk
NK
Hillier
D000818:Animals; D057506:Arthropod Antennae / Q000648:ultrastructure*; D001517:Coleoptera / Q000648:ultrastructure*; D005260:Female; D008297:Male; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009674:Nova Scotia; D058618:Sensilla / Q000648:ultrastructure; D012727:Sex Characteristics
Gustatory; Morphology; Olfactory; Sensillum; Ultrastructure