논문 상세보기
pp.11-16
Measurements were made on morphology of each developmental stages of the chestnut weevil, Curculio sikkimensis, reared in the laboratory and field from 2003 to 2006. The size of egg was 0.8±0.03 ㎜. The escaping larvae were measured, in average, as 98 ㎎ in body weight, 10.65 and 3.99 ㎜ in body length and width, and 1.70 ㎜ in head width. Pupal size of female and male was 7.01 and 6.53 ㎜, respectively. The fresh weight (0.343 g), body length (7.76 ㎜) and width (3.38 ㎜), and head width (1.60 ㎜) of female adults were significantly bigger than those (0.268 g, 7.14 ㎜, 3.01 ㎜ and 1.37 ㎜, respectively) of male adults. Proboscis length (6.53 ㎜) and antennal length (5.47 ㎜) of female was also significantly longer than those (3.56 and 4.63 ㎜, respectively) of male. The larvae of C. sikkimensis overwintered for 1~3 years and their body weight, body length, and body width were decreased. The ratio between proboscis length and body length, the basipodite position attached to the proboscis, and shape of the sex organ on the abdominal end could be used to discriminate sexes.
