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The size–frequency distribution of Nannophya koreana larvae based on the groups using Hcap analysis. Arrows present the flight period of N. koreana adults. Width of horizontal white, light-gray, dark-gray, and black color bars indicate the proportions of larvae in Group I, II, III, and IV, respectively. The study period was from August 2006 to July 2007 in MG (a) and from June 2019 to June 2021 in MU (b).
