Pistius truncatus is a species of crab spiders belonging to the family Thomisidae.
Pistius truncatus can reach a length of about in males, while females can reach . The spider has small eyes and abdomen is much widened in females.
Adults can be found from May to June.
This species has a palaearctic distribution. It is widespread in central and western Europe. It occurs in bushes, mainly in small scrubby oaks and in forest edges.