The water striders (Hemiptera: Heteroptera: Gerridae) of Costa Rica: new species, checklist, and new records Author Pacheco-Chaves, Bernald Author Cordeiro, Isabelle Da Rocha Silva Author Moreira, Felipe Ferraz Figueiredo Author Springer, Monika text Zootaxa 2018 2018-09-06 4471 3 493 522 journal article 29467 10.11646/zootaxa.4471.3.4 3da0d889-944e-465a-8a94-c6fde5cda633 1175-5326 1439932 C83B3937-4CFA-4B2D-972C-C95DE896D85C Potamobates tridentatus Esaki, 1926 ( Fig. 11 ) Previously recorded from Costa Rica ( Guanacaste , Puntarenas , and San José provinces), Panama , and Colombia ( Esaki 1926b ; Hungerford 1937 , 1939 ; Kuitert 1942 ; Wheelwright & Wilkinson 1985 ; Manzano et al. 1995 ; Polhemus & Polhemus 1995 ; Molano et al. 2008; Posso & González 2008 ). It is herein reported for the first time from Alajuela , Heredia , and Limón provinces. As are other species of Potamobates , P. tridentatus is found on the riffle areas of lotic habitats along the Atlantic and Pacific slopes of Costa Rica , up to 700 m a.s.l. Material examined . Alajuela— Tilarán, Rugama Stream, Cote Hydropower Project, 700 m a.s.l. , 19.V.2008 : 1 female ( MZUCR ). San Carlos , Celeste River , N 10° 43.843, W -084° 53.270’, 106 m a.s.l., 23. IV. 2008 , (B. Pacheco): 2 females ( MZUCR ). Chachagua River , N 08° 45.551’ , W -83° 30.575’, 31.I.2008 , ( B. Pacheco ) : 2 males ( MZUCR ). San Carlos , Crucitas , Relaves , N 10.86662° , W -084.34776°, 83 m a.s.l. , X.2008 , (B. Pacheco): 1 female, 1 nymph (MZUCR). San Carlos, Crucitas, 50 m a.s.l., 25. IV.2008 , (B. Pacheco): 3 males, 1 female (MZUCR). San Carlos, Crucitas, Mina Stream, N 10.86987, W -84.33404, 12.X.2008 , (B. Pacheco): 2 females , 3 nymphs ( MZUCR ). Guanacaste — Santa Cruz , Diriá National Park , Brasil Stream, X 239,390, Y 361,240, 160 m a.s.l. , 23.I.2000 , ( Y. Cárdenas ): 1 female ( InBio Cat. #57400). Santa Cecilia , Chon River , X 331,900, Y 379,800, V. 1990 , 550 m a.s.l., ( Parataxon. Course II ): 1 female ( InBio ). Maritza Station , west side of Orosi Volcano , X 326,900, Y 373,000, 600 m a.s.l. , VI.1991 , (C. Chaves ) : 1 female ( InBio ). Maritza Station , west side of Orosi Volcano , 600 m a.s.l. , X 326,900, Y 373,000, VI.1990 , ( C. Chaves ) : 2 males ( InBio ). Los Mesones , Barra Honda National Park, A. C . Tempisque , X 239,200, Y 388,900, 100 m a.s.l. , I.1994 , ( M. Reyes ): 1 male , 1 female ( InBio Cat. #2562). Santa Cruz , Arado , Diriá River , 21. XI. 2008 , ( B. Pacheco ): 2 females ( MZUCR ). Heredia— Sarapiquí , La Tirimbina , Sarapiquí River , 27.I.2006 : 1 female , 1 nymph ( MZUCR ). Sarapiquí , La Tirimbina , Sarapiquí River under hanging bridge, 07.VII.2008 , ( B. Pacheco ) : 1 male ( MZUCR ). Sarapiquí , La Selva Biological Reserve , OET , SAT 95 , El Surá River , < 50 m . a.s.l, 27.VIII.2005 , ( M. Losilla ) : 1 male ( MZUCR ). Limón— Amubri , X 385,500, Y 578,000 70 m a.s.l. , VI.1993 , ( G. Gallardo ): 8 females ( InBio Cat. #2250). Puntarenas— Grande de Térraba Watershed , Unión River , Diquís Hydropower Project, 14. III .2006 : 3 males , 1 female , 1 nymph ( MZUCR ). Grande de Térraba Watershed , Volcán River , Diquís Hydropower Project , 13.II.2006 : 3 males , 1 female ( MZUCR ). Golfito , La Gamba Stream , pond in tributary, 13.I.2010 , (M. Springer ) : 1 female , 6 nymphs ( MZUCR ). Grande de Térraba Watershed , Platanares River , Diquís Hydropower Project, 13.IX.2006 : 1 male , 3 nymphs ( MZUCR ). Grande de Térraba Watershed , Ceibo River , Diquís Hydropower Project, 27.II.2006 : 1 male ( MZUCR ). Golfito , La Gamba , forest, 13.I.2010 , (M. Springer ) : 1 male ( MZUCR ). Golfito , La Cañaza , 14.I.2010 , (M. Springer ) : 2 males , 1 female ( MZUCR ). Piedras Blancas River , N 8° 47.168’ , W -83° 14.106’, 02.II.2008 , ( B. Pacheco ) : 2 males , 5 nymphs ( MZUCR ). Golfito , 12.I.2010 , (M. Springer ) : 3 males , 3 females ( MZUCR ). Camaronal River , Diquís Hydropower Project, ICE, 02. IV.2008 , 1 female ( MZUCR ). Corcovado National Park , La Leona , Cerro Puma , X 267,700, Y 518,900, 300 m a.s.l. , 27.VI. 2003 , ( A. Azofeifa ): 1 male ( InBio Cat. #74494). La Fortuna , Nuevo River , X 290,700, Y 576,200, 100— 200 m a.s.l, 09.VI.2005 ( J. Azofeifa ): 2 males ( InBio Cat. #83817). Quepos , Cañas River , 05.X.2008 , (B. Pacheco ): 1 female , 7 nymph ( MZUCR ). Osa , Río Piro Reserve , Piro River , N 08° 24.117’ , W -83° 20.353’, 32 m a.s.l. , V.2009 , (B. Pacheco ): 9 males , 5 females , 4 nymphs ( MZUCR ). Osa , Río Piro Reserve , stream behind station, N 08° 24.178’ , W -83° 20.170’, 27 m a.s.l. , V.2009 , (B. Pacheco): 8 males , 4 females ( MZUCR ). Osa , Corcovado National Park , N 08° 28.703 , W -83° 35.447’, XI.2009 , ( B. Pacheco ) : 1 female ( MZUCR ). Banegas River , N 08° 41.455’ , W -83° 32.211’, 31.I.2008 , ( B. Pacheco ) : 13 males , 7 females , 15 nymphs ( MZUCR ). San José —Pérez Zeledón, 0 9.III.2009 , (J. Wright): 1 female ( MZUCR ). Pérez Zeledón , N 09° 19.424’ , W -83° 37.200, 629 m a.s.l., 23. III .2009 , ( J. Wright ) : 3 males, 1 female (MZUCR).