TY - JOUR T1 - Holarctic species of Mycetophila ruficollis-group (Diptera, Mycetophilidae) JF - Acta Entomologica Bohemoslovaca Y1 - 1972 A1 - Laštovka, Petr SP - 275 EP - 294 L2 - 22407 L3 - 22424 VL - 69 ER -