Arctoseius butleri (Hughes, 1948)

Tristomus butleri Hughes, 1948: 139 .

Arctoseius butleri .— Evans, 1955: 288; 1958a: 187; Hughes, 1961: 225; 1976: 314. Tristomus butleri .— Hirschmann, 1962: 48.

Leioseius (Arctoseius) butleri .— Bernhard, 1963: 163.

TYPE DEPOSITORY: not stated.

TYPE LOCALITY AND HABITAT: Belfast, Ireland, in sawdust.