title: Morphology and distribution of antennal sensilla of two tortricid moths, Cydia pomonella and C. succedana (Lepidoptera).
abstract: Morphology of antennal sensilla and their distributions were investigated in male and female adults of two tortricid moths, Cydia pomonella and C. succedana using scanning electron microscopy. The antennae of both sexes of the two species were filiform, and the overall lengths of the antennae and the number of consisting segments were greater in males than in females. Six types of sensilla (s.) were identified from the antennae of both sexes in the two species: s. trichodea, s. basiconica, s. coeloconica, s. auricillica, s. chaetica, and s. styloconica, in varying numbers and distribution along the antennae. Among them, surface of four sensilla types (s. trichodea, s. basiconica, s. coeloconica, s. auricillica) were multiporous in the two species, indicating that the primary function of these sensilla is olfactory. The s. trichodea were the most numerous on the antennae in both sexes of the two species. Male C. pomonella has a greater number of s. trichodea than the female. The four sensilla types were further divided into different subtypes in the two species; s. trichodea into three subtypes, s. basiconica into two subtypes, s. coeloconica into two subtypes in C. pomonella and one subtype in C. succedana, and s. auricillica into two subtypes. Sexual dimorphism was observed in the subtypes of s. trichodea. The long subtype of s. trichodea occurs only on male antennae, whereas the short subtypes mainly on female antennae. These findings would be helpful for further studies on detailed chemo-receptive functions of each subtype of the antennal sensilla.
authors.affiliation: Division of Applied Life Science (BK21+ Program), Gyeongsang National University, Jinju, 52828, Republic of Korea.
authors.forename: Hyun Sik
authors.initials: HS
authors.lastname: Roh
authors.affiliation: New Zealand Institute for Plant and Food Research, Christchurch, New Zealand.
authors.forename: Kye Chung
authors.initials: KC
authors.lastname: Park
authors.affiliation: Korea Research Institute of Bioscience and Biotechnology, Daejun, 34141, Republic of Korea.
authors.forename: Hyun-Woo
authors.initials: HW
authors.lastname: Oh
authors.affiliation: Institute of Life Science, Gyeongsang National University, Jinju, 52828, Republic of Korea. parkcg@gnu.ac.kr.
authors.forename: Chung Gyoo
authors.initials: CG
authors.lastname: Park
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009036:Moths / Q000502:physiology* / Q000648:ultrastructure*; D058618:Sensilla / Q000000981:diagnostic imaging / Q000648:ultrastructure*
keywords: antenna; morphology; scanning electron microscopy; sensilla; trichodea