- Angola
- Easton, 1984
- Australia
- Easton, 1984; Christmas Island: Easton, 1984; Great Barrier Reef: Easton, 1984; Queensland: Easton, 1984; New South Wales: Easton, 1984; Western Australia: Easton, 1984
- Bermuda
- Easton, 1984
- Syn. P. bermudensis: Beddard, 1895; Reynolds and Wetzel, 2008, 2012
- Brazil
- Easton, 1984
- Syn. P. bermudensis: Beddard, 1895
- National review per state:
- Brown and James, 2007: São Paulo, Santa Catarina, Rio de Janeiro, Rio Grande do Sul, Pernambouc
- Burma (Myanmar)
- Easton, 1984
- Canary Islands
- Easton, 1984; Talavera, 2007
- Cape Verde
- Easton, 1984
- China
- Hainan: Easton, 1984
- Colombia
- Easton, 1984; Feijoo, 2007b
- Cook Islands
- Easton, 1984
- Fidji
- Easton, 1984
- France
- Bouche, 1972; Easton, 1984
- Galápagos Islands
- Blakemore, 2008f
- Guadeloupe
- Csuzdi and Pavlicek, 2009
- Guinea-Bissau
- Easton, 1984
- Haiti
- Easton, 1984
- Hawaii
- Easton, 1984; Reynolds and Wetzel, 2008
- Honduras
- Brown and Fragoso, 2007
- India
- Easton, 1984; Andaman Islands: Easton, 1984; Goa: Stephenson, 1917; Kerala: Aiyer, 1929; Laccadive Islands: Beddard, 1903; Nicobar Island: Easton, 1984; Tamil Nadu: Gobi et al., 2004
- Indonesia
- Blakemore, 2006; Java: Easton, 1984; Kalimantan: Easton, 1984; Sulawesi: Easton, 1984
- Italy
- Sardinia: Easton, 1984
- Jamaica
- Easton, 1984
- Syn. P. bermudensis: Beddard, 1895
- Japan
- Easton, 1984; Blakemore, 2003, 2003b
- Kiribati
- Line Islands (Fanning Is.): Blakemore, 2006c
- Korea
- Blakemore et al., 2012b
- Koweit
- Easton, 1984
- Madagascar
- Easton, 1984
- Maldives
- Beddard, 1903
- Mauritius
- Easton, 1984
- Mexico
- Easton, 1984
- New Caledonia
- Easton, 1984
- New Zealand
- Lee, 1959; Chatham Islands: Easton, 1984
- Puerto Rico
- Reynolds and Wetzel, 2008
- Samoa
- Easton, 1984
- South Africa
- Easton, 1984
- Spain
- Diaz Cosin and Moreno, 1981; Easton, 1984; Diaz Cosin et al., 1992; Lopez et al., 2009
- Sri Lanka
- Easton, 1984
- Sudan
- Easton, 1984
- Taiwan
- Shen et al., 2005; Blakemore et al., 2006; Blakemore, 2008e
- Tanzania
- Easton, 1984
- Tonga
- Easton, 1984
- Tunisia
- Omodeo et al., 2003
- United States
- California: Easton, 1984; Florida: Easton, 1984; Louisiana: Easton, 1984; Mississippi: Easton, 1984; Texas: Easton, 1984; Virginia: Easton, 1984
- Syn. P. bermudensis:
- National reviews per state:
- Reynolds and Wetzel, 2004: California, Florida, Louisiana, Mississippi, Texas, Virginia
- Reynolds and Wetzel, 2008: California, Florida, Louisiana, Mississippi, Texas, Virginia
- Reynolds and Wetzel, 2012: California, Florida, Illinois, Louisiana, Mississippi, Texas, Virginia
- Syn. P. gracilis: Florida: Reynolds and Wetzel, 2004, 2008
- Venezuela
- Easton, 1984; Brown and Fragoso, 2007b
- Vietnam
- Easton, 1984; Nguyen, 2014
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