Ultrastructure and distribution of sensilla on the maxillary and labial palps ofChlorophorus caragana(Coleoptera: Cerambycidae)

Abstract

Chlorophorus caragana is a species of long-horned beetle that damages Caragana davazamcii Sancz. (Fabales: Papilionaceae) bushes in desert areas in China. The beetles cause substantial damage to local forestry plantations and the environment. Sensilla on the maxillary and labial palps of coleopterans a allow the insects to recognize their host plants. We used scanning and transmission electron microscopy to study the ultrastructure, distribution, and abundance of various sensilla on the maxillary and labial palps of C. caragana. We found four types of sensilla including ten subtypes: one of Böhm's bristles, three of sensilla chaetica, one of digitiform sensilla, and five of sensilla twig basiconica. The types and distribution of the sensilla on the maxillary and labial palps were highly similar between males and females. Finally, this article discusses the functions of the sensilla of related species in recognizing hosts and the significance of gustation studies in the context of the control of C. caragana.

Observation on the ultrastructure of the oral appendages of Glenea cantor Fabricius (Coleoptera: Lamiinae)

“…In addition, the oral appendages of adult G. cantor (labial palpus and mandibular palpus) are mainly involved in host selection, oviposition, mating and other behaviors (Zhang et al, 2018;Hall et al, 2019). In the gross morphology of the labial palpus and mandibular palpus, we also found that there was obvious dimorphism, which is consistent with Aphis gossypii Glover and Diaphorina citri Kuwayama (Ettay et al,2001;Bento et al,2017), especially in terms of length.…”

Morphology and distribution of sensilla on the antennae and ovipositor of the Hymenopteran parasitoid Pseudotorymus jaapiellae Yang et Chen

“…Here, we hypothesize that the sensilla on the antennae and ovipositor play an important role in selecting and locating the ultimate host. It is well known that the ultrastructural study of insects sensilla could provide evidence for the function of sensory organs (Altner & Prillinger, 1980; Zhang et al, 2018). To date, many studies have shown that the antennae and ovipositors of Hymenopteran insects can sense host information through search and contact efforts, and those behaviors rely on antennal and ovipositor sensilla, which are especially important for those species of parasitoids that depend on chemical cues to locate their hosts (Ahmed, Zhang, He, Bai, & Wang, 2013; Amornsak, Cribb, & Gordh, 1998; Bleeker, Smid, van Aelst, van Loon, & Vet, 2004; Cönsoli et al, 1999; Das et al, 2011; Dweck, 2009; Dweck & Gadallah, 2008; Gao, Luo, & Hammond, 2007; Li, Lu, Liu, Zhang, & Zhou, 2011; Nacro & Nénon, 2009; Norton & Vinson, 1974; Onagbola & Fadamiro, 2008; Onagbola, Boina, Hermann, & Stelinski, 2009; Rocha, Moreira, & Redaelli, 2007; Roux, Baaren, Gers, Arvanitakis, & Legal, 2005; Shah, 2012; van Baaren, Boivin, Le Lannic, & Nénon, 1999; van Lenteren et al, 2007; Wang, Yang, & Gould, 2010).…”

Observations on the ultrastructure of the oral appendages of Glenea cantor Fabricius (Coleoptera: Lamiinae)

“…Additionally, the mandibular and labial palpi of the adult G. cantor play a major role in host choice, oviposition, mating, and other activities (Hall et al, 2019; Zhang et al, 2018). We also observed apparent dimorphism in the gross morphology of the labial and mandibular palpi, which is similar with Aphis gossypii Glover and Diaphorina citri Kuwayama (Bento et al, 2017; Ettay & Moshe, 2001).…”