Scanning electron microscopy was done to describe the morphology of antennaof adult male and fe- male ladybeetle, Coccinella septempunctata . Eleven-segmented, scaly antennawas 950μm in male and 980 μm in female. El...Scanning electron microscopy was done to describe the morphology of antennaof adult male and fe- male ladybeetle, Coccinella septempunctata . Eleven-segmented, scaly antennawas 950μm in male and 980 μm in female. Electron micrographs reveal the occurrence of eight typesof sensillae, viz. chaetica ( Ch) , trichoidea (Tr) , basiconica (Ba) , campaniformia (Ca) ,ampucellaceous (Am) , scolopalia (Sc) , placoidea (PI) and hook shaped sensilla on the antennae ofmale and female ladybeetles. Ch had long external-process, with base surrounded by membranous socketand the length was 60 and 70 μm in male and female ladybeetle, respectively. Sensillae Tr weredistally curved and inserted into depression, 9.0 and 15 μm long in male and female ladybeetle,respectively. Sensillae Ba were cuticular peg-like and 0.57 and 0.70 μm long on the male and femaleantennae. Sensillae Ca were small dome-like and had diameter of 3.0μm in both the sexes. SensillaeAm were pit-like in appearance and the diameter of the pit was 1.2 and 1.5 in male and femaleladybeetle, respectively. Sensillae PI were elliptical sunken plates like in both the sexes.Sensillae Sc were broad at their apex and pointed at their tip, 2.5μm. A single hook-shapedsensilla of 21.0 μm in length was present on male antenna only. Ch, Ca, Am, and PI were almostsimilar in numbers in both the sexes. Sensillae Tr were more numerous on the male antenna and Bawere more numerous on the female antenna.展开更多
文摘Scanning electron microscopy was done to describe the morphology of antennaof adult male and fe- male ladybeetle, Coccinella septempunctata . Eleven-segmented, scaly antennawas 950μm in male and 980 μm in female. Electron micrographs reveal the occurrence of eight typesof sensillae, viz. chaetica ( Ch) , trichoidea (Tr) , basiconica (Ba) , campaniformia (Ca) ,ampucellaceous (Am) , scolopalia (Sc) , placoidea (PI) and hook shaped sensilla on the antennae ofmale and female ladybeetles. Ch had long external-process, with base surrounded by membranous socketand the length was 60 and 70 μm in male and female ladybeetle, respectively. Sensillae Tr weredistally curved and inserted into depression, 9.0 and 15 μm long in male and female ladybeetle,respectively. Sensillae Ba were cuticular peg-like and 0.57 and 0.70 μm long on the male and femaleantennae. Sensillae Ca were small dome-like and had diameter of 3.0μm in both the sexes. SensillaeAm were pit-like in appearance and the diameter of the pit was 1.2 and 1.5 in male and femaleladybeetle, respectively. Sensillae PI were elliptical sunken plates like in both the sexes.Sensillae Sc were broad at their apex and pointed at their tip, 2.5μm. A single hook-shapedsensilla of 21.0 μm in length was present on male antenna only. Ch, Ca, Am, and PI were almostsimilar in numbers in both the sexes. Sensillae Tr were more numerous on the male antenna and Bawere more numerous on the female antenna.
