Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group

Martin Fikáček, Franz Hebauer

Pages	103-117
Citation	FIKÁČEK, Martin a HEBAUER, Franz. Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group. Acta Entomologica Musei Nationalis Pragae. Prague: National Museum, 2009, 49(1), 103-117. ISSN 0374-1036 (print) 1804-6487 (online). Also available from: https://www.nm.cz/en/periodicals/aemnp/49-1/taxonomic-revision-of-the-new-world-species-of-the-genus-oosternum-sharp-coleoptera-hydrophilidae-sphaeridiinae-ii-the-oosternum-convexum-species-group

Pages

103-117

Citation

FIKÁČEK, Martin a HEBAUER, Franz. Taxonomic revision of the New World species of the genus Oosternum Sharp (Coleoptera: Hydrophilidae: Sphaeridiinae) II. The Oosternum convexum species group. Acta Entomologica Musei Nationalis Pragae. Prague: National Museum, 2009, 49(1), 103-117. ISSN 0374-1036 (print) 1804-6487 (online). Also available from: https://www.nm.cz/en/periodicals/aemnp/49-1/taxonomic-revision-of-the-new-world-species-of-the-genus-oosternum-sharp-coleoptera-hydrophilidae-sphaeridiinae-ii-the-oosternum-convexum-species-group

Acta Entomologica Musei Nationalis Pragae | 2009/49/1

The Oosternum convexum species group is defined on the basis of external morphological characters. Three species are recognized within the group, all of them endemic to the Cordillera de Talamanca Mts. in Central America: O. convexum sp. nov. (Panama, Costa Rica), O. intermedium sp. nov. (Costa Rica) and O. simplex sp. nov. (Costa Rica). A key to species is provided, along with drawings and SEM photographs of diagnostic characters.

Resumen

El grupo de especies de O. convexum es definido sobre la base de los caracteres externos. Se reconocen tres especies en este grupo, todas endémicas de la Cordillera de Talamanca en América Central: O. convexum sp. nov. (Panamá, Costa Rica), O. intermedium sp. nov. (Costa Rica) y O. simplex sp. nov. (Costa Rica). Se presenta una clave para las especies de este grupo y los dibujos o fotografías SEM de los caracteres diagnósticos.