Figure 1 in Late autumn occurrence of non-diapause male adults in various geographic populations of a pierid butterfly, Eurema mandarina

Figure 1. The latitude, longitude and winter length at survey sites. Winter length was defined as the number of days when the average maximum temperature in 1981–2010 was below 15°C. The average maximum temperature was obtained from the Japan Meteorological Agency (2017). Because there were no temperature data for Kashiwa City, Kameoka City, or Joyo City, the data of Ryugasaki City (35.53°N, 140.13°E, located within 20 km from Kashiwa City), Nantan City (35.07°N, 135.27°E, located within 15 km from Kameoka City) and Kyotanabe City (34.50°N, 135.46°E, located within 5 km from Joyo City), respectively, were used instead.