Sensilla digitiformia and campaniformia on the tip of the piercing ovipositor ofDyseriocrania subpurpurella(Haworth 1828) (Lepidoptera: Eriocraniidae)

Abstract

Abstract. The sensilla on the piercing ovipositor of Dyseriocrania subpurpurella are described by means of scanning electron microscopy. Two sensilla types are present: aporous sensilla digitiformia and sensilla campaniformia. This is the fi rst mention of sensilla digitiformia on the ovipositor of a Lepidoptera. The sensilla are arranged in successive pairs on each side of the ovipositor: the sensilla campaniformia are apical, the sensilla digitiformia are subapical. All the sensilla are probably capable of recording both the cuticular stress and the mechanical contact of the ovipositor from the initial through the fi nal steps of penetration in the leaf-host to egg-laying. The different possible roles of each sensillum type are considered in relation with our present knowledge.

Morphology and distribution of antennal, maxillary palp and labial palp sensilla of the adult bruchid beetles,Callosobruchus chinensis(L.) (Coleoptera: Bruchidae)

“…). They may have the function of a chemoreceptor and mechanoreceptor (Farazmand & Chaika ; Faucheux ; Ortloff et al . ).…”

“…The sensilla digitiformia are observed on labial and maxillary palp of many insects (Honomichl & Guse 1981;Giglio et al 2003). They may have the function of a chemoreceptor and mechanoreceptor (Farazmand & Chaika 2008;Faucheux 2008;Ortloff et al 2014). Some people also have speculated they are thermo-, hygro-and CO 2 -sensitive (Honomichl & Guse 1981).…”

Notable plesiomorphies and notable specializations: Head structure of the primitive “tongue moth” Acanthopteroctetes unifascia (lepidoptera: Acanthopteroctetidae)

“…In addition to being common on acanthopteroctetid antennae, microtrichia, noninnervated hairs, are similarly common on the antennae of Agathiphagidae (Faucheux, 1990), Heterobathmiidae (Faucheux, 2004a), and Eriocraniidae (Faucheux, 2010). In Lophocoronidae and Neopseustidae, microtrichia are still dense on the scape and pedicel, but they are less numerous on the flagellum, as can be seen in Faucheux's SEMs (Faucheux, 2005(Faucheux, , 2006Faucheux et al, 2006).…”

“…Scale covering in A. unifascia is more or less evenly distributed on both antennal surfaces, dorsal and ventral, and is in that regard like the antennal scale covering in Lophocoronidae (Faucheux, 2006), Mnesarchaeidae (Faucheux and Gibbs, 2008), and Neopseustidae . In contrast, in Agathiphagidae and Heterobathmiidae, the ventral face of the flagellum is devoid of scales (Faucheux, 1990(Faucheux, , 2004a, and in Eriocraniidae, both antennal surfaces are scaled, but scales are more numerous on the dorsal surface (Faucheux, 2010). Interestingly, in the examined members of micropterigid genus Sabatinca, there is no difference in scale covering between the two surfaces (Faucheux, 2004b).…”

Ultrastructure of sensilla on the maxillary and labial palps of three species (Coleoptera: Staphylinidae: Staphylininae)

“…Generally, SP are plate-like or sausage-like structures found on top of maxillary and labial palps. They are mostly reported to serve as mechanoreceptors (Zacharuk et al 1977;Giglio et al 2003;Faucheux 2008), or to have olfactory and chemosensory functions (Tichy and Gingl 2001;Kumar and Kumar 2016). Moreover, they are reported to function as odor receptors in Cybister japonicus (Song et al 2017), Si.…”