Table 2. List of specimens and collecting data for bacterial endosymbiont study.

Species	Location	Geographical coordinates	Sample size	Sampling date
AC	Shahe	40.165′N, 116.217′E	19	2009.VII.14, 2010.V.12
	Beishatan	40.004′N, 116.381′E	4	2009.VII.25
AF	Matao	40.142′N, 115.787′E	16	2010.IX.9, 2010.IX.15
	Taotiaogou	40.635′N, 116.537′E	15	2009.IX.25
	Beikouzi	40.539′N, 116.417′E	12	2009.IX.26, 2010.VI.10
	Sijiasui	40.091′N, 115.948′E	4	2010.IX.2
AV	Matao	40.142′N, 115.787′E	15	2010.IX.9, 2010.IX.15
	Taotiaogou	40.635′N, 116.537′E	19	2009.IX.25
	Beikouzi	40.539′N, 116.417′E	14	2009.IX.26, 2010.VI.10
	Sijiasui	40.091′N, 115.948′E	9	2010.IX.2