46 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Ectobius albicinctus 

 South France. — Females and young beneath stones (Blair, 1922). 



Ectobius duskei 



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.) 



Ectobius lapponicus 



Southeastern Europe. — Numerous under stones on Trebovic (Burr, 

 1898). 



U.S.S.R. — Found in wooded communities and peat bogs (in 

 northern part of its range) ; males occur predominantly on herbaceous 

 plants and bushes, but females hide under fallen leaves, moss, etc. 

 (Bei-Bienko, 1950). It populated about 25 percent of the aspen trees 

 in an experimental plot, feeding in galleries in the bark of young 

 branches; there were 25 or more individuals per tree (Stark in 

 Bei-Bienko, 1950). 



Germany. — Abundant in woods ; in pine woods in company with 

 Stenohothrus vagans and Tettix kraussi. Numerous in low aspen 

 bushes in forest. Numerous in deciduous and coniferous forests on 

 trees and underbrush ; under fallen leaves and moss ; on oaks (Zacher, 

 1917). In foliage of young oak on top of mountain (Ramme, 1923). 



Great Britain. — Under moss and dry leaves, among woodland 

 undergrowth, and, generally, on vegetation close to the ground ; 

 occasional on bushes and trees (Lucas, 1920). Nymphs in heather in 

 February and later ; adults among rushes fringing pond in July 

 (Lucas, 1925). Nymphs and males on rushy vegetation; unusually 

 abundant on low herbage in dried-up swamp (Lucas, 1930). 



Ectobius nicaeensis 



France. — In dry woods, on bushes, and at the base of trees 

 (Chopard, 1947). 



