Data have been gathered on the distribution of the species
Lepthyphantes notabilis Kulcz., 1887,
Rugathodes bellicosus (Simon, 1873), and
Rugathodes instabilis (O. P.-Cbr., 1870) in the Czechoslovakia. The general geographical distribution of these species is also presented and the individual ecological demands of each species are specified. The influence of altitude on body size and coloration in
Rugathodes bellicosus is discussed.