What question did this study set out to answer?

To document the presence of new and previously thought extinct water beetle species in the Cabo Verde Archipelago.

March 22, 20260 citationsOpen Access

First records of Paracymus aeneus (Germar, 1823) and Enochrus segmentinotatus (Kuwert, 1888) (Coleoptera: Hydrophilidae) from the Cabo Verde Archipelago and confirmation of the occurrence of Ochthebius hesperides Balfour-Browne, 1976 (Hydraenidae) on Sal Island

CGCzesław GreńSilesian Museum KKKarol KomosińskiUniversity of Warmia and Mazury in Olsztyn ALAndrzej Lasoń

Key Points

To document the presence of new and previously thought extinct water beetle species in the Cabo Verde Archipelago.
Field observations on Sal Island
Species identification of water beetles
Comparison with historical records
First records of Paracymus aeneus and Enochrus segmentinotatus confirmed on Sal Island.
Confirmation of previously believed extinct Ochthebius hesperides presence.
Findings indicate species-poor water beetle fauna on Sal Island.

Abstract

Paracymus aeneus (Germar, 1823) and Enochrus segmentinotatus (Kuwert, 1888) are recorded for the first time from Sal Island in the Cabo Verde Archipelago. The presence of Ochthebius hesperides Balfour-Browne, 1976 (Hydraenidae), previously regarded as extinct, is also confirmed. The results indicate that the water beetle fauna of Sal Island is species-poor, which is consistent with earlier observations on the biodiversity of the Cape Verde Islands. At the same time, the discovery of new and rediscovered taxa highlights the insufficient state of entomological exploration of the archipelago.

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