The paper summarizes original and literature data on the geographical distribution of Adosomus roridus (Pallas, 1781). The major part of the A. roridus range lies within the Eurasian Grass-Steppe. This range has no disjunction in the regions located to the north of the Black Sea. The northern limit of it runs along the line 54°N (East) – 44°N (West). In the latitudinal direction, the species range stretches from Piedmont, Italy (~8°E; Luigioni 1929) to West Kazakhstan. According to the literature sources, A. roridus occurs in xerothermic sunny habitats, life cycle is associated with some Asteraceae ( Tanacetum vulgare, Artemisia spp . and possibly Achillea millefolium ).