Figure 6
From: Terrestrial invasion of pomatiopsid gastropods in the heavy-snow region of the Japanese Archipelago
Monthly precipitations in the distributions of pomatiopsine genera. Values for each genus, except for Idiopyrgus and Tomichia, are average of 5 localities which was randomly selected from the distribution. The precipitation data were obtained from the World Meteorological Organization (WMO; http://www.wmo.int/). Blue and orange lines represent genera in Northern and Southern Hemisphere, respectively. Distribution of Fukuia and Blanfordia has especially high precipitation during winter (shaded period). B, Blanfordia; Co, Coxiella; F, Fukuia; I, Idiopyrgus; O, Oncomelania; P, Pomatiopsis; T, Tomichia.