Berosus undatus (Fabricius, 1792)

Deler-Hernandez, Albert, Fikacek, Martin & Cala-Riquelme, Franklyn, 2013, A review of the genus Berosus Leach of Cuba (Coleoptera, Hydrophilidae), ZooKeys 273, pp. 73-106 : 96-98

Berosus undatus (Fabricius, 1792) Figures 10 a–i 11

Hydrophilus undatus Fabricius, 1792: 185.

Berosus undatus (Fabricius, 1792). Synonymy: Gemminger and Harold 1868: 485. - Van Tassell 1966: 74 (unpublished PhD thesis: redescription, identification key). - Spangler 1981: 156 (diagnosis and distribution). - Hansen 1999: 82 (catalogue). - Peck 2005: 48 (checklist). - Epler 2010: 12.24 (notes on distribution). - Deler-Hernández and Cala-Riquelme 2010: 73 (diagnosis, distribution, identification key). For complete synonymy and references see Hansen (1999).

Type locality.

"America meridionalis".

Material examined. CUBA: Las Tunas: 1 ex. (in alcohol) (BSC-E): Las Cuarenta, 20°00'9.72"N, 76°57'48.6"W, 100 m a.s.l., 27.xi.2004, leg. Y. S. Megna, 00045. Granma: 2 exs. (in alcohol) (BSC-E): Cauto Cristo, Laguna permanente-II [permanent pool-II], 20°33'33.1"N, 76°28'44"W, 44 m a.s.l., 06.iii.2004, leg. L. Chávez, 00053. Santiago de Cuba: 4 exs. (in alcohol) (BSC-E): Laguna Juraguá, 19°56'30.8"N, 75°40'21.3"W, 22 m a.s.l, 17.ix.2003, leg. Y. S. Megna, 00044; 1 ex. (in alcohol) (BSC-E); 3 exs. (dry-mounted) (NMPC): Palma Soriano, Monte Barranca, 20°20'13.5"N, 76°1'11.6"W, 203 m a.s.l., 05.xii.2007, leg. A. Deler-Hernández, 00054; 1 ex. (dry-mounted) (NMPC): Palma Soriano 20°06'05"N, 75°58'44"W, 130 m a.s.l. 01.v.2005, leg. K. Blanco; 2 exs. (in alcohol) (BSC-E): La Maya, Los Reinaldos, Laguna temporal [temporal pool], 20°11'12"N, 75°31'43"W, 100 m a.s.l., 17.iii.2006, leg. Y. S. Megna, 00088. Guantánamo: 1 ex. (in alcohol) (BSC-E): Imías,Yacabo Abajo, Laguna temporal [temporal pool], 20°03'33.1"N, 74°42'29.9"W, 6 m a.s.l., 24.x.2008, leg. A. Deler-Hernández and S. Muñiz, 00060; 3 exs. (in alcohol) (BSC-E): San Antonio del Sur, Macambo, río Macambo, remanso [backwater], 20°03'26.9"N, 74°44'15.82"W, 4 m a.s.l., 25.x.2008, leg. A. Deler-Hernández and S. Muñiz, 00059.

Published Cuban records:Santiago de Cuba: Laguna Juraguá ( Spangler 1981); Siboney ( Spangler 1981). Holguín: Gibara, La Aguada ( Spangler 1981).

Diagnosis.

Habitus as in Figs 10a, b. Body length 6.3-7.2 mm. Head metallic black; pronotum pale with a pair of closely arranged elongate longitudinal black spots mesally, pronotal punctuation darkened; elytra pale with darkened striae and interval punctuation, plus with larger elongate dark spots on posterior half of intervals 1-4 and at midlength of intervals 8-10. Elytral apices with subapical spine in male (Fig. 10g), entire and rounded in female (Fig. 10h). Mesoventral process lowly laminar with large tooth directed posteriad (Fig. 10c). Abdominal ventrite 1 with median keel developed only between metacoxae. Emargination of abdominal ventrite 5 rectangular, with two broad and short medial teeth (Fig. 10i). Aedeagus (Figs 10d-f) with median lobe ca. as long as parameres, lateral margins of parameres subparallel except apically; median lobe narrow in dorsal view, slightly wider in lateral view.

Distribution.

USA (Texas), Mexico, Lesser Antilles (Hansen, 1999) and Cuba.

Habitat.

Cuban specimens were collected in permanent and temporary pools as well as from running waters with clear or turbid water, having or lacking aquatic vegetation.