Isognomon isognomum (Linnaeus, 1758)
Red Sea to Australia
Philippines 78mm

Isognomon acutirostris (Dunker, 1882)
ES. Asia, W. Pacific
Fiji 17mm

Isognomon isognomum (Linnaeus, 1758)
Red Sea to Australia
Philippines 125mm

Isognomon recognitum (Mabille, 1895)
E. Asia, W. Pacific
Ecuador 19mm

Isognomon isognomum (Linnaeus, 1758)
Red Sea to Australia
New Caledonia 74mm

Isognomon alatum (Gmelin, 1791)
Florida to Brasil, Bermuda, Caribbean
Florida 47mm

Isognomon bicolor (C.B. Adams, 1845)
Florida, Bermuda, Caribbean
E. Panama 55mm

Isognomon anomioides (Reeve, 1858)
West and south Africa
Cabo Verde archipelago 27-40mm

Isognomon perna (Linnaeus, 1767)
Indo-W. Pacific
Philippines 43mm – B_ISGN_011 French Polynesia 41,5mm

Isognomon perna (Linnaeus, 1767) juv
Indo-W. Pacific
Hawaii 13-21mm

Isognomon ephippium (Linnaeus, 1758)
Tropical Indo-W. Pacific
Malaysia 68,7-84mm

Isognomon ephippium (Linnaeus, 1758)
Tropical Indo-W. Pacific
Okinawa 41mm

Isognomon cf. perna (Linnaeus, 1767)
Indo-W. Pacific
French Polynesia 48mm

Isognomon legumen (Gmelin, 1791)
Indo-W. Pacific, E. Mediterranean
Comores 15-21mm