Copelatus caelatipennis angustatus Chevrolat, 1863

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 : 390

Copelatus caelatipennis angustatus Chevrolat, 1863

( Figs. 2 , 20 , 25 )

Copelatus angustatus Chevrolat, 1863: 201 .

Copelatus angustatus: GUNDLACH (1891: 37) .

Copelatus caelatipennis angustatus: YOUNG (1963: 59) , SPANGLER (1981: 153), EPLER (1996: 3.33, 2010: 5.45), LARSON et al. (2000: 48), FERNÁNDEZ (2001: 30), NILSSON (2001: 59), PECK (2005: 44).

Type locality. Cuba, La Habana Province.

Material examined. CUBA: PINAR DEL RÍO: Soroa , 13.vi.1963, 1 ex. ; Dos Hermanas , 2.vii.1963, 1 ex. LA HABA- NA: Marianao , iii.1963, 8 exs. SANCTI SPÍRITUS: Los Galleguitos , 24.ii.1960, l ex . LAS TUNAS: Sábalo , 6.viii.2005, Y. S. Megna leg., 1 ex. ; Comunales , 4.x.2008, Y. S. Megna leg., 2 exs. ; Comunales , 9.viii.2006, Y. S. Megna leg., 1 ex. ; 12.i.2009, Y. S. Megna leg., 2 exs. ; 16.i.2009, Y. S. Megna leg., 4 exs. GRANMA: Cauto Cristo , 13.vii.2004, L. Chavéz leg., 4 exs. SANTIAGO DE CUBA: Caney del Sitio , 1.vi.2005, Y. S. Megna leg., 15 exs. ; Las Lagunitas , 18.iii.2006, Y. S. Megna leg., 7 exs ; San Rafael , 3.ix.2006, Y. S. Megna & Deler-Hernández leg., 85 exs. ; Monte Barranca , 4.xii.2007, Deler-Hernández leg., 7 exs. ; 5.xii.2007, Deler-Hernández leg., 3 exs. GUANTÁNAMO: La Marsella, 22.i.2004, Y. S. Megna leg., 1 ex.

Diagnosis. TL 4.4–4.9 mm; EW 2.0– 2.3 mm; see Table 1 for other body measurements. Elytron with a posterolateral submarginal stria and 10 discal striae ( Fig. 2 ); male protibia ventrobasally without emarginations; median lobe similar to a bird’s head ( Fig. 20a ); pronotum in both sexes usually without strioles on disc, strioles if present, restricted to sides.

Copelatus caelatipennis angustatus is externally very similar to C. caelatipennis princeps and C. caelatipennis fragilis Sharp, 1882 , but can be separated by its pronotum that is usually without strioles on the disc in both sexes.

Ecology. Previous to this study, the habitat of C. caelatipennis angustatus had not been known as all specimens reported were collected at light ( SPANGLER 1981). This suggests that this species is a good flyer. In Cuba, C. caelatipennis angustatus was collected in lentic (permanent and temporary) environments and is predominantly associated with turbid waters and muddy habitats.

Distribution. Widely distributed in Cuba ( Fig. 25 ). Also known from southern Florida ( YOUNG 1963; EPLER 1996, 2010; LARSON et al. 2000).

Figures

Figs.1–8. Habitus and color patterns of Copelatus species from Cuba.1 – C.barbouri Young, 1942; 2 – C. caelatipennis angustatus Chevrolat, 1863; 3 – C. cordovai sp. nov.; 4 – C. cubaensis Schaeffer, 1908; 5 – Copelatus darlingtoni Young, 1942; 6 – C. insolitus Chevrolat, 1863; 7 – C. montivagus Young, 1942; 8 – C. posticatus (Fabricius, 1801).

Figs. 20–23. Male genitalia of Cuban species of Copelatus. 20 – C. caelatipennis angustatus author, year; 21 – C. cordovai sp. nov.; 22 – C. cubaensis Schaeffer, 1908; 23 – C. posticatus (Fabricius, 1801). Parts of male genitalia: a – median lobe of aedeagus in left lateral view, b – left paramere in lateral view.

Figs. 24–27. Known distribution of Copelatus species in Cuba. 24 – C. barbouri Young, 1942; 25 – C. caelatipennis angustatus Chevrolat, 1863; 26 – C. caelatipennis princeps Young, 1963; 27 – C. cordovai sp. nov. See Appendix 1 for additional information on the localities reported in each map.