Classification
Tree [regio]Heteroptera [subordo]
Lygaeidae [familia]
Artheneinae [subfamilia]
Holcocranum [genus]
Holcocranum diminutum [species]
Holcocranum diminutum Horváth, 1898 contains the following taxa:
Holcocranum diminutum diminutum Horváth, 1898 [subspecies]
Holcocranum diminutum umbrinum Linnavuori, 1984 [subspecies]