玉帶鳳蝶(Papilio polytes pasikrates Fruhstorfer)（鱗翅目：鳳蝶科）的生活史

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In the present study, fresh eggs of the Common Mormon Butterfly, Papilio polytes pasikrates Fruhstorfer, were collected from a host in a net room. The fresh eggs were placed in the laboratory under conditions of 25~32℃ room temperature. Hatching larvae were individually reared on leaves of Citrus sunki for observations of the morphology and life history of the butterfly. The results are summarized as follows. The morphology of various developmental stages in this species is described. The hatching rate of the eggs was 42%. The time for eggs to hatch was 3 days on average. Two types of larval stadium, namely five or six instars, were found. The durations of the larval stage for both five-instar and six-instar types were 20.31 ± 0.26 and 22.86 ± 0.63 days, respectively, and 21.20 ± 0.39 days averaged for the two types; the six-instar type was significantly longer than the five-instar type. The durations of the pupal stage for the five-instar type, six-instar type, and the average of both types of larvae were 10.17 ± 0.11, 10.60 ± 0.25, and 10.28 ± 0.12 days, respectively. The time required for eggs to become adults in the five-instar type, six-instar type, and the average of both types of larvae were 33.42 ± 0.34, 35.50 ± 0.87, and 33.94 ± 0.39 days, respectively. The threshold value of head capsule width for larvae to develop into pupae was above 4.71 mm. The increment of the head capsule width of the larvae was in accordance with the increase in the larval instar stage, and was maintained at a ratio of 1.42~1.52 times. A linear regression coefficient existed between the common logarithms of head capsule width of larvae and the larval instar stage; this was in agreement with Dyar's law. The increments in both head capsule width and body length of larvae were in accordance with the increase in the larval instar stage. The weight, length, and width means of pupae were 0.92 ± 0.09 g, 27.42 ± 0.99 mm, and 11.12 ± 0.22 mm, respectively. The means of wing length and width of adults were 40.66 ± 2.84 and 27.25 ± 4.70 mm. Leaf consumption increased as the larval instar grew. The total leaf area consumed averaged over both types of larvae was 183.95 ± 8.21 cm^2. The greatest leaf consumption occurred at the final instar larval stage. The fifth instar larvae of the five-instar type consumed about 76.90% while the sixth instar larvae of six-instar type consumed, 59.76% of the total amount of leaves consumed.