FIGURE 19 in Taxonomic redefinition and natural history of the endemic silphid beetle Silpha longicornis (Coleoptera: Silphidae) of Japan, with an analysis of its geographic variation

FIGURE 19. Vertical distribution of Silpha longicornis Portevin based on the examined specimens (Appendix 1) and climatic vegetation zones. Solid line shows the maximum altitude along the transect. a—forest limit; b—border between evergreen coniferous and deciduous broad-leaved forests; c—hypothetical forest limit during the Last Glacial Maximum; d—hypothetical border between coniferous and broad-leaved forest during the Last Glacial Maximum. Modified from Nogami (2001: Fig. 4.2.1).