Length of whole body, of adult male, 35(45) mm; colour varies from red to dull yellow, sometimes with white spotting, never any blue. Carapace relatively narrow, lateral spines unevenly spaced; rostrum narrow and pilose; tubercles at base of apical tooth hidden by hairs. Abdominal segments marked by a central transverse groove, with lesser furrows in parallel, in front and behind; all grooves furnished with fringes of setae. Antennal peduncle without a spine on article 2. Merus of maxilliped 3 with a central spine; chelipeds closely covered with fringed scales (G. dispersa).
Sublittoral, between depths of 10-50 metres.
From Norway and south Iceland to Madeira and Canaries, Mediterranean.