A review of Copelatus from Cuba, with the description of two new species (Coleoptera: Dytiscidae: Copelatinae) Author Megna, Yoandri S. Departamento de Biología, Universidad de Oriente. Patricio Lumumba s / n, Santiago, Santiago de Cuba, Cuba; e-mail: ysuarez 1976 @ yahoo. es Author Epler, John H. 461 Tiger Hammock Road, Crawfordville, Florida, U. S. A. 32327; e-mail: johnepler 3 @ comcast. net text Acta Entomologica Musei Nationalis Pragae 2012 2012-12-17 52 2 383 410 journal article 10.5281/zenodo.5331014 0374-1036 5331014 Key to Copelatus of Cuba 1 Elytra with well-defined striae, either linear or undulating/anastomosing ( Figs. 2–4, 8–10 ). ........................................................................................................................... 2 - Elytra mostly smooth, at most with longitudinal series of weak punctures ( Figs. 1, 5, 6, 7 ). .................................................................................................................................. 9 2 Elytra with 5–10 well defined linear striae; males and females ( Fig. 2–4, 8–10 ). ........ 3 - Elytra striae fine, undulating/anastomosing; females 1 ( Fig. 9 ). .................................. 12 3 Each elytron with 5 or 6 discal striae ( Fig. 4 ). .............................................................. 4 - Each elytron with 10 discal striae ( Fig. 8 ). .................................................................... 5 4 Each elytron with a posterolateral submarginal stria and 6 discal striae ( Fig. 4 ). ........... ........................................................................................... C. cubaensis Schaeffer, 1908 - Each elytron with a posterolateral submarginal stria and 5 discal striae. ........................ ................................................................................................ C. blatchleyi Young, 1953 (not recorded from Cuba , but may occur there due to its presence in Florida Keys and Bahamas ) 5 Each elytron with striae 1, 3, 5, and 9 extending to apical third ( Fig. 8 ). Body size larger, TL> 6.0 mm; EW> 3.0 mm. ........................................ C. posticatus ( Fabricius, 1801 ) - Each elytron with all striae almost complete ( Fig. 2 ); TL < 6.5 mm . ........................... 6 6 Median lobe with apex similar to a bird head ( Fig. 20a ) ( C. caelatipennis ). ................ 7 - Median lobe of different shape, not similar to a bird head. .......................................... 8 7 Pronotum in both sexes usually without strioles on disc, if strioles are present, they are restricted to pronotal sides. ..................... C. caelatipennis angustatus Chevrolat, 1863 - Pronotum in both sexes usually with short strioles on disc. ............................................ ........................................................................... C. caelatipennis princeps Young, 1963 8 Male protibia with two ventrobasal emarginations; median lobe with outside margin abruptly expanded at midlength ( Figs. 21a, b ); parameres broad, with short setae on inner margin ( Fig. 21c ); female with interstrial space mostly smooth. .... C. cordovai sp. nov. - Male protibia without emarginations ventrobasally; median lobe with inner margin strongly concave at midlength ( Fig. 11a ); parameres narrow, with long setae on inner margin ( Fig. 11c ); female with interstrial space with minute, complex striation ( Fig. 9 ). .............................................................................................................. C. danyi sp. nov. 9 Larger, TL = 5.9– 6.3 mm ; elytra with apical fasciae reduced ( Fig. 1 ). ........................... .............................................................................................. ... C. barbouri Young, 1942 - Smaller, TL = 5.3–5.9 mm ; elytra with apical fasciae large ( Figs. 5–7 ). .................... 10 10 Male protibiae not modified, their posterior margin straight ( Fig. 17 ). ........................... .............................................................................................. C. darlingtoni Young, 1942 - Male protibiae modified, their anterior margin weakly to strongly bowed, posterior margin with ventrobasal emargination ( Fig. 18 ). .................................................................... 11 11 Elytra fusco-testaceous with base and apex lighter ( Fig. 6 ); median lobe with apex strongly curved in lateral aspect ( Fig. 14a ). ..................................... C. insolitus Chevrolat, 1863 - Elytra fuscous with well-defined basal markings and testaceous apex ( Fig. 7 ); median lobe with apex slightly curved in lateral aspect ( Fig. 15a ). .......... C. montivagus Young, 1942 1 Identification of isolated females is problematic/impossible.