This paper describes a new species of the snout moth Berastagiatainanica sp. nov. (Lepidoptera: Pyralidae) from Taiwan. From
2009 to 2016, a biology study was conducted on population dynamics and
embryonic development. Spring season is the peak of the eclosion of overwintering larvae or pupae. The average longevity of adult
was 14.8 ± 6.2 days (N = 174), the average number of eggs laid was 259 ± 3
eggs/moth (N= 2), the hatching rate of eggs was
95.4% (N = 262), and the average hatching time of eggs was 99.6 ± 18.6 hours (N
= 68). The average body length of males was 5.64 mm ± 0.91 mm (N = 30), and the
average body length of females was 6.28 mm ± 0.84 mm (N = 30). This finding
indicates that female snout moths are larger than males (Global R = 0.058, P =
0.012). The snout moth eclosion rate was 16.9 moths/100 pods in the first year
(2010/2011, N = 2,224 pods) and 10.9 moths/100 pods in the second year (2014/2015, N = 6,382
pods). The pod borer rate was 31.8% (N = 707) and the seed borer rate was 41.2%
(N = 3,628) in the first year, whereas the pod borer rate
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