Sensilla on the antennae and ovipositor of the carpenterworm, Streltzoviella insularis (Staudinger, 1892) (Lepidoptera, Cossidae)

Abstract

Streltzoviella insularis (Staudinger, 1892) (Lepidoptera, Cossidae) is an important boring pest that damages the broad-leaved trees and fruit trees. To provide requisite background information on further chemical ecology studies, we examined the typology, morphology and distribution of sensilla on the antennae and ovipositor of Streltzoviella insularis with scanning electron microscopy. In total, six morphological sensillar types were found on the antennae: Multiporous sensilla trichodea were the most abundant and distributed over the flagellum; Uniporous sensilla chaetica, Multiporous sensilla basiconica, Multiporous sensilla coeloconica and Aporous sensilla squamiformia were present in lower numbers on the flagellum; Aporous Bohm’s bristles were found only on the scape and pedicel. In addition, two types of sensilla were detected on the ovipositor, i.e. aporous sensilla trichodea, and multiporous sensilla basiconica. The identification of these sensilla types could provide morphological evidence to facilitate a better understanding of the host location, mate finding and oviposition processes of this important species.

Keywords:

• Streltzoviella insularis
• trichodea
• chaetica
• basiconica
• coeloconica