[2] Armadilliidum sfenthourakisi was described as a distinct species of Armadillidium in 2008, using specimens collected from the surroundings of Mount Olympus.

Until now, its true affinities aren't known, but, based on the shape of the telson, it is speculated that its closest relatives are the members of the Western Greek "Armadillidium jonicum-group" (A. jonicum and A.

[1] Armadillidium sfenthourakisi is a medium to large sized species, reaching maximum dimensions of about 17 x 6.7 mm.

The frontal shield surpasses the anterior edge of the head, has a straight upper margin and obtuse lateral corners.

Specifically, until now, the species has been found only in the regions surrounding and encompassing Mount Olympus in Pieria and the Vale of Tempe in Larissa.