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Latreille, 1828

The lateral margins of the carapace are without an epibranchial spine or tooth but have a simple node that is sometimes absent. The frontal margin is finely denticulate with feeble submedian lobes and a hardly indicated antennal sinus. The carapace, chelipeds and ambulatory legs are a uniform deep brownish colour. The internal angle of the cheliped carpus is without a spine. (Serène, 1984)

Type locality: Red Sea.
Range: Red Sea - (Klunzinger, 1913, Castro, 1996), Jiddah, Abu Lat and Port Sudan (Castro, 1999a); Somalia - Gesira (Castro, 1999a); Mozambique - Coconut Bay (Castro, 1999a); South Africa - Cape of Good Hope; Madagascar - Iles Glorieuses (Serène, 1984, Castro, 1996, Castro, 1999a); Seychelles - Amirante, Praslin and Coëtivy Islands (Rathbun, 1911), Farquhar and Praslin (Serène, 1984), Mahé and Farquhar Island (Castro, 1996), Farquhar Islands, Praslin, Mahé and St. François Atoll (Castro, 1999a); Aldabra Islands (Castro, 1999a); Saya de Malha Bank (Castro, 1999a); Réunion (Serène, 1984, Castro, 1996, 1999a); Mauritius (Michel, 1964, Castro, 1996, 1999a); Chagos Archipelago - Salomon, Peros Coin and Egmont (Rathbun, 1911), Salomon, Diego Garcia and Speakers Bank (Castro, 1999a); India - Palk Strait (Alcock, 1898); Sri lanka (Alcock, 1898); Cocos Islands (Castro, 1999a); Christmas Island (Castro, 1999a); Japan - Northern Daito-jima (Sakai, 1939), Tosa Bay, Amami-shoto, Yaeyama-retto and northern Daito-jima (Sakai, 1976a); Taiwan - (Chang et al., 1987), Su-ao and P'eng-hu (Lin, 1949); China - Paracel Island (Chen & Lan, 1978), Hainan Island and Paracel Islands (Dai & Yang, 1991); Vietnam - Nha Trang (Serène, 1959); Indonesia - Ambon, Paternoster Islands, Amurang, Sulawesi, Obilatu, Kupang Bay, Timor, and Jayapura, Irian Jaya (Castro, 1999b); New Britain - Kokopo near Rabaul (Takeda & Nunomura, 1976); Australia - off Stradbroke Island (Castro, 1997a); Chesterfield Islands (Castro, 1997a); Flinders Reefs (Castro, 1997a); Elizabeth Reef (Castro, 1997a); Hawaii - (Sakai, 1939), Waikiki Beach and Honolulu (Rathbun, 1906); Line Islands - Palmyra (Edmondson, 1923); Marquesas Islands - Nuku Hiva (Jacquinot & Lucas, 1853, Castro, 1997b), Hiva Oa and Fatu Hiva (Castro, 1997b); Society Islands - Moorea (Castro, 1997b); Tuamotu Archipelago - Makatea (Sendler, 1923); Clipperton Island (Hertlein & Emerson, 1957, Garth, 1965); Mexico - Cabo San Lucas, Baja California (Stimpson, 1860b, A. Milne Edwards, 1881, Luke, 1977), María Madre Island, Clarión and Socorro Islands (Rathbun, 1930), Arena Bank, Gulf of California (Crane, 1937), Clarión Island and Zihuantanejo (Crane, 1947), Espíritu Santo Island and Isabel Island (Garth, 1960), Islas Marías, Bahía Chamela (Hernández-Aguilera et al., 1986), San José and Mazatlán (Rodríguez de la Cruz-Ramírez, 1987), Bahía Chamela, Jalisco (Nates-Rodríguez, 1989), Cerralvo Island (Villalobos-Hiriart et al., 1989), Clarión and Socorro Islands, Revillagigedo Islands (Garth, 1992), Islas Marías (Hernández-Aguilera & Martínez-Guzmán, 1992), Cerralvo Island, Baja California (Lira-Fernández, 1992), Espíritu Santo Island, Socorro Island and Clarión Island (Castro, 1996); Costa Rica - Uvita Bay (Crane, 1947); Panama- Pearl Islands (Rathbun, 1930), Bahía Honda (Crane, 1947), Gulf of Chiriquí and Panama (Huber, 1985), Uva Island, Gulf of Chiriquí, and Gulf of Panamá (Castro, 1996); Colombia - Gorgona Island (Garth, 1948, Prahl et al., 1978, 1979, Castro, 1982, 1996); Ecuador - La Plata Island (Garth, 1948); Galapagos Island (Schmitt, 1933, Garth, 1946a, Holthuis, 1979. Castro, 1996).

Trapezia digitalis