Grandidierella trispinosa, a new species of amphipod from the Karachi coast, Pakistan (Crustacea: Amphipoda: Aoridae)

Grandidierella trispinosa sp. nov., the first species of the genus Grandidierella Coutiére, 1904 from Pakistan, is described from specimens collected at Sandspit backwater, west of Karachi. The new species is illustrated and compared with allied species. The holotype is housed in the Marine Reference Collection and Resource Centre, University of Karachi.