对采自内蒙古自治区的2种平腹蛛进行重新记述:袜昏蛛Phaeocedus braccatus(L. Koch,1866)和软毛掠蛛Drassodes pubescens(Thorell,......

对采自内蒙古自治区的2种平腹蛛进行重新记述；袜昏蛛Phaeocedus braccatus(L.Koch,1866)和软毛掠蛛Drassodes pubescens(Thorell,18......