Fig. 1. A in The Latitudinal Distribution Of Sphingid Species Richness In Continental Southeast Asia: What Causes The Biodiversity 'Hot Spot' In Northern Thailand?

Fig. 1. A, Estimated species richness (simplified from Beck & Kitching, 2004); B, Sampling intensity (kernels of original distribution records, smoothed; software by Hooge et al., 1999); C, altitudinal zonation (from digital elevation model, http://www.ngdc.noaa.gov/mgg/global/ seltopo.html). Elevation classes are [m]: 0–500 (white), 501–1000, 1001–1500, 1501–2000,>2001 (black); D, Landscape types (simplified from remote sensing data, http://www-gvm.jrc.it/glc2000). Agricultural and highly disturbed areas are printed in light grey, mosaic and bush in dark grey and closed forests in black.