First record of Munidopsis acutispina Benedict, 1902 (Decapoda, Anomura, Galatheidae) in the Mediterranean sea

The minute squat lobster Munidopsis acutispina Benedict, 1902 is recorded for the first time from bathyal grounds in the Mediterranean Sea. It can easily be distinguished from the two species of Munidopsis previously known from the Mediterranean, for the surface of the carapace covered with squamous spiniform tubercles. As the available illustrations of M. acutispina are somehow inadequate, the species is briefly redescribed and illustrated based on the new material and compared with its closest relatives, that are found in the western Atlantic and eastern Pacific Oceans.