DYTISCINAE, Leach, 1815

Peck, Stewart B., 2016, The beetles of the Lesser Antilles (Insecta, Coleoptera): diversity and distributions, Insecta Mundi 2016 (460), pp. 1-360 : 47-48

SUBFAMILY DYTISCINAE

TRIBEHYDATICINI

[ Hydaticus (Hydaticus) cinctipennis Aubé 1838: 191 ; Sharp 1882: 651; Fleutiauxand Sallé 1890: 372; Roughley and Pengelly 1981: 269; Nilsson 2001: 107. Distribution. Guadeloupe?, a likely label error or misidentification. USA (NY and TN-FL-MS).]

Hydaticus (Guinotites) rimosus Aubé 1838: 182 ; Fleutiauxand Sallé 1890: 372; Blackwelder 1944-1957: 79; Roughley and Pengelly 1981: 274; Nilsson 2001: 105; Turnbow and Thomas 2008: 35; Perez- Gelabert 2008: 77; Thomaset al. 2013: 29. Distribution. Bahamas, Barbados (not determined to species, Bass 2003: 279), Caymans, Cuba, Guadeloupe, Hispaniola. Mexico to Nicaragua; widespread Antillesand Latin America . Plate 2.

Hydaticus (Guinotites) subfasciatus Laporte 1835: 96 , Blackwelder 1944-1957: 79; Tremouilles 1996: 20; Nilsson 2001: 106. Distribution. Dominica. Guatemala, Panama, French Guiana, Brazil; the Lesser Antillesand Latin America .

TRIBEACILIINI

Thermonectus basillaris (Harris) 1829: 1 ( Dytiscus ); Fleutiauxand Sallé 1890: 372 ( Thermonectes ); Blackwelder 1944-1957: 79; Ramos 1946: 32; Wolcott 1951: 233 ; Spangler 1981: 154; Larson et al. 2000: 826; Nilsson 2001: 85; Bass 2003: 279, 2004: 28, 2006a: 13, 2006b: 33; Ivieet al. 2008b: 239; Turnbowand Thomas 2008: 37; Alarie et al. 2009: 7; Daltry 2009: 63.; Thomaset al. 2013: 30. = Acilius incisus Aubé 1838: 147 of Guadeloupe, of St. Barthélemy. Distribution. Antigua, Caymans, Cuba, Bahamas, Barbados, Guadeloupe, Grenada, Hispaniola, Jamaica, Mona, Montserrat, Nevis, Puerto Rico, St. Barthélemy, St. Lucia. Canada (southern Ontario), USA (eastern), Mexico to Brazil; widespread New World. Plate 2.

Thermonectus circumscriptus (Latreille) 1812 -1813: 223 ( Dytiscus ); Fleutiaux and Sallé 1890: 372 ( Thermonectes ); Blackwelder 1944-1957: 79; Wolcott 1951: 233 ; Miskimenand Bond 1970: 80; Spangler 1981: 154; Nilsson 2001: 85; Turnbowand Thomas 2008: 37; Perez-Gelabert 2008: 78; Alarie et al. 2009: 8; Thomaset al. 2013: 30. = Hydaticus insularis Laporte 1835: 91 of Guadeloupe. Distribution. Antigua, Bahamas, Caymans, Cuba, Guadeloupe, Hispaniola, Jamaica, Mona, PuertoRico, St. Croix, St. Thomas. Mexico to Brazil and Argentina; widespread Antilles and Latin America . Plate 2.

Thermonectus margineguttatus (Aubé) 1838: 149 ( Acilius ); Fleutiaux and Sallé 1890: 373 ( Thermonectes ); Blackwelder 1944-1957: 80; Spangler 1981: 154; Tremouilles 1989: 105; Nilsson 2001: 85; Turnbow and Thomas 2008: 37; Alarie et al. 2009: 11. Distribution. Antigua, Bahamas, Cuba, Guadeloupe, Hispaniola, Puerto Rico. Mexico to Brazil and Argentina; widespread Antilles and Latin America . Plate 2.

TRIBEERETINI

Eretes sticticus (L.) 1767: 666; Fleutiaux and Sallé 1890: 373; Bennettand Alam 1985; 20; Tucker 1952: 340; Miskimen and Bond 1970: 79; Nilsson 2001: 99 (supposedly limited to Old World, but in error); Miller 2002: 264; Bass 2006b: 33; Turnbowand Thomas 2008: 35. = Eretes occidentalis Erichson 1847: 73 ; Larson et al. 2000: 829; Nilsson 2001: 99; Valentine and Ivie 2005: 275. Distribution. Antigua *, Bahamas, Barbados, Guadeloupe, Guana, Mayreau*, PuertoRico, St. Barthélemy, St. Croix, St. John, St. Kitts; one of two New World species in the genus, widespread from southern USA south to Peru, including West Indies and Galapagos Islands; widespread New World; also Middle East and throughout Africa. Notes. An inhabitant of temporary pools in dry regions; colonizing temporary water bodies; often attracted to lights; larval stages completed in 9-10 days. Eretes explicitus Miller 2002b: 265 of se USA and FL might extend to the Antilles.

TRIBECYBISTRINI

Megadytes (Bifurcitus) giganteus (Laporte) 1835: 99 ( Dytiscus ); Blackwelder 1944-1957: 80; Miskimen and Bond 1970: 80; Bennettand Alam 1985 20; Nilsson 2001: 94; Bass 2003: 279; Ivieet al. 2008b: 239; Turnbowand Thomas 2008: 36; Perez-Gelabert 2008: 77; Thomaset al. 2013: 20. = Cybister lherminieri Laporte 1835: 99 of Guadeloupe; Fleutiauxand Sallé 1890: 374 ( Megadytes ). = Megadytes levigatus Olivier 1795: 14 , Fleutiauxand Sallé 1890: 373 of Guadeloupe. = Megadytes fraterna Sharp 1882: 99 , Blackwelder 1944-1957: 80 of Antigua and of Guadeloupe; Miskimen and Bond 1970: 80 of St. Croix; Turnbowand Thomas 2008: 36 of Bahamas; Perez-Gelabert 2008: 77 of Hispaniola; Daltry 2009: 63 of St. Lucia; Thomaset al. 2013: 29 of Caymans. Distribution. Antigua, Bahamas, Barbados, Caymans, Cuba, Guadeloupe, Hispaniola, Montserrat, PuertoRico, St. Croix, St. Lucia. Mexico to Argentina; widespread Antilles and Latin America . Notes. The larvae are predaceous on tadpoles of the introduced giant toad Rhinella marina (L.), formerly known as Bufo marinus L. This beetle is apparently a serious limiting factor to population build-up of this agriculturally beneficial but otherwise environmentally undesirable amphibian which has been introduced to islands throughout the Caribbean for the control of sugarcane insect pests. Plate 2.