Copelatus, : GUEORGUIEV, 1968

Megna, Yoandri S. & Epler, John H., 2012, A review of Copelatus from Cuba, with the description of two new species (Coleoptera: Dytiscidae: Copelatinae), Acta Entomologica Musei Nationalis Pragae 52 (2), pp. 383-410: 387

publication ID

http://doi.org/10.5281/zenodo.5331014

DOI

http://doi.org/10.5281/zenodo.5398794

persistent identifier

http://treatment.plazi.org/id/03CA7F7D-FFEC-4C59-FE40-99C84BBFF985

treatment provided by

Diego

scientific name

Copelatus
status

 

Key to Copelatus   of Cuba

1 Elytra with well-defined striae, either linear or undulating/anastomosing ( Figs. 2–4, 8–10 View Figs View Figs ). ........................................................................................................................... 2

- Elytra mostly smooth, at most with longitudinal series of weak punctures ( Figs. 1, 5, 6, 7 View Figs ). .................................................................................................................................. 9

2 Elytra with 5–10 well defined linear striae; males and females ( Fig. 2–4, 8–10 View Figs View Figs ). ........ 3

- Elytra striae fine, undulating/anastomosing; females 1 ( Fig. 9 View Figs ). .................................. 12

3 Each elytron with 5 or 6 discal striae ( Fig. 4 View Figs ). .............................................................. 4

- Each elytron with 10 discal striae ( Fig. 8 View Figs ). .................................................................... 5

4 Each elytron with a posterolateral submarginal stria and 6 discal striae ( Fig. 4 View Figs ). ........... ........................................................................................... 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 View Figs ). Body size larger, TL> 6.0 mm; EW> 3.0 mm. ........................................ C. posticatus ( Fabricius, 1801)  

- Each elytron with all striae almost complete ( Fig. 2 View Figs ); TL <6.5 mm. ........................... 6

6 Median lobe with apex similar to a bird head ( Fig. 20a View Figs ) ( 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 View Figs ); parameres broad, with short setae on inner margin ( Fig. 21c View Figs ); 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 View Figs ); parameres narrow, with long setae on inner margin ( Fig. 11c View Figs ); female with interstrial space with minute, complex striation ( Fig. 9 View Figs ). .............................................................................................................. C. danyi   sp. nov.

9 Larger, TL = 5.9– 6.3 mm; elytra with apical fasciae reduced ( Fig. 1 View Figs ). ........................... .............................................................................................. ... C. barbouri Young, 1942  

- Smaller, TL = 5.3–5.9 mm; elytra with apical fasciae large ( Figs. 5–7 View Figs ). .................... 10

10 Male protibiae not modified, their posterior margin straight ( Fig. 17 View Figs ). ........................... .............................................................................................. C. darlingtoni Young, 1942  

- Male protibiae modified, their anterior margin weakly to strongly bowed, posterior margin with ventrobasal emargination ( Fig. 18 View Figs ). .................................................................... 11

11 Elytra fusco-testaceous with base and apex lighter ( Fig. 6 View Figs ); median lobe with apex strongly curved in lateral aspect ( Fig. 14a View Figs ). ..................................... C. insolitus Chevrolat, 1863  

- Elytra fuscous with well-defined basal markings and testaceous apex ( Fig. 7 View Figs ); median lobe with apex slightly curved in lateral aspect ( Fig. 15a View Figs ). .......... C. montivagus Young, 1942  

1 Identification of isolated females is problematic/impossible.