Table 1. Summary statistics for the four genetically differentiated populations.

Population	N	N A	H E	H O	F IS
Huanggang	24	9	0.79	0.65	0.19
Changsha	23	7.5	0.69	0.55	0.21
Chongqing-1	13	5.88	0.76	0.84	−0.1
Chongqing-2	9	5.88	0.75	0.65	0.13

N, number of colonies screened per location; N _A, average number of alleles per locus; H _E, expected heterozygosity; H _O, observed heterozygosity; F _IS, inbreeding coefficient.