Testing the effect of allele sampling within species. Legend: We chose four sampling schemes: 2, 5, 10 alleles and a lognormally distributed (mean = 5) number of alleles per species. All species trees had a depth of 80 N generations. The left pane shows the effect of sampling scheme on the threshold parameter (number of species). The dots are posterior means of individual replicates. The blue line indicates the number of expected species (50) and the red line shows the mean number of species diverging earlier than 4 N generations. The right pane shows the 95% HPD interval for each replicate. Gray points indicate the HPD overlapped the true number of species, black ones that it did not.