| 英文摘要 |
Diaphanes lampyroides (Olivier) is a winter firefly species commonly found throughout mountain areas of Taiwan, and it has become an important species for promoting firefly watching during the winter season. In order to understand the life history of the species, both laboratory and field populations were investigated. We collected the larvae of D. lampyroides from Sunlink- Sea, Nantou County, and reared them to become adults under laboratory conditions. After the adults mated and laid eggs, we collected the eggs and incubated them under the constant conditions of temperature (17°C), relative humidity (80% ± 5%), and the photoperiod of the light dark ratio (L:D=10:14). A total of 43 hatched larvae were reared separately, and 15 of them successfully emerged under laboratory conditions. The durations of each life cycle stage (including egg, larva, prepupa, pupa, and adult stages) were 120.9 ± 18.4 days (mean ± standard deviation), 145.1 ± 13.9 days, 4.3 ± 1.8 days, 14.5 ± 3.3 days, and 19.8 ± 5.9 days, respectively. The mean generation time, therefore, was 298.4 ± 18.0 days (n=9) for males and 313.7 ± 19.0 days (n=6) for females. For the individuals that successfully emerged, the mean generation time lasted 304.5 ± 19.3 days (n=15). The results from the field investigations indicated that the larval populations of D. lampyroides mainly occurred from August to October, and adults occurred from October to December. In conclusion, the results from both laboratory rearing and field investigations suggested that D. lampyroides has only one generation per year. |
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