Distribution and ultrastructure of the antennal sensilla of the grape weevil Naupactus xanthographus (Coleoptera: Curculionidae)

Waleska Vera, Jan Bergmann

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

The grape weevil, Naupactus xanthographus Germar (Coleoptera: Curculionidae), is a polyphagous insect native to southern South America that causes considerable damage in grape and other fruit species. In this study, the morphology and ultrastructure of the antennae and the antennal sensilla of N. xanthographus were investigated using scanning electron microscopy and transmission electron microscopy. The antennae consist of a scape, a pedicel, a funicle, and a zone called the “club,” which are all formed by a total of 12 antennomers. Different types of sensilla were observed: sensilla trichoidea, sensilla chaetica type 1 and 2, sensilla basiconica, and sensilla rod-like. No sexual dimorphism was observed. The possible functions of the sensilla are discussed in relation to their morphology and ultrastructure.

Original languageEnglish
Pages (from-to)590-598
Number of pages9
JournalMicroscopy Research and Technique
Volume81
Issue number6
DOIs
StatePublished - Jun 2018
Externally publishedYes

Keywords

  • Antennal sensilla
  • Curculionidae
  • grape weevil
  • scanning electron microscopy
  • transmission electron microscopy
  • ultrastructure

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