Table 1.

Occurrence data for the 10 populations of S. yangi used for molecular analyses in this study

Population	Collection location	Longitude (E)	Latitude (N)	Collection date	Number of individuals
FX	Fengxiang, Shaanxi	107°23′20″	34°31′56″	15/6/2016	20
HC	Hancheng, Shaanxi	109°35′54″	34°54′35″	25/5/2014	18
HL	Helan Mountains, Ningxia	106°51′20″	38°57′47″	5/6/2015	20
LF	Linfen, Shanxi	111°03′40″	36°04′37″	3/6/2015	20
LL	Luliang, Shanxi	111°34′50″	37°39′54″	7/6/2015	18
PL	Pingliang, Gansu	106°39′54″	35°51′00″	20/6/2016	17
TB	Taibai, Shaanxi	107°31′22″	34°02′46″	14/6/2017	2
TC	Tongchuan, Shaanxi	108°34′56″	34°50′36″	14/6/2014	18
YA	Yan’an, Shaanxi	109°28′33″	36°50′50″	29/5/2014	20
YH	Yonghe, Shanxi	111°05′20″	36°58′48″	6/6/2015	10