Читать книгу The Biotic Associations of Cockroaches - Edwin R. Willis - Страница 197

U.S.S.R.—In the steppe belt, it is a very characteristic member of feather-grass steppes, where it is found in associations of typically steppe vegetation, with feather grasses at the head (Stipa lessingiana and others), and on rocky slopes; it occurs frequently in cultivated fields of young crops and also in young geological strata in sections with virgin soil. The populations of this steppe cockroach average 6 to 8 individuals per square meter from the middle to the end of July. By the end of summer most individuals were observed at the bases of straw stacks with a canopy, having their south sides sheltered. This is the only species of Ectobius adapted to a purely steppe biocenose. (Bei-Bienko, 1950.)