Two new species of Hydraena Kugelann, 1794 from São Tomé Island-an apparent adaptive radiation (Coleoptera, Hydraenidae)

David T. Bilton

doi:10.11646/zootaxa.5254.4.11

Two new species of Hydraena Kugelann, 1794 from São Tomé Island-an apparent adaptive radiation (Coleoptera, Hydraenidae)

David T. Bilton

Zoology

University of Plymouth

Research output: Contribution to journal › Article › peer-review

Abstract

Hydraena saotometerrestris sp. nov. and H. turneri sp. nov. are described from São Tomé island in the Gulf of Guinea. Both species belong to the subgenus Hydraenopsis Janssens, 1972 and were collected from primary forest locations; H. turneri sp. nov. found living aquatically in a small seepage over rock and clay. In contrast, H. saotometerrestris sp. nov. was collected from damp forest litter, far from water, in two mountainous locations on São Tomé and is apparently terrestrial. The overall habitus and similar form of aedeagus in the new species strongly suggest they are closely related, pointing to apparent adaptive radiation following a single colonization of this oceanic island.

Original language	English
Pages (from-to)	593-600
Number of pages	8
Journal	Zootaxa
Volume	5254
Issue number	4
DOIs	https://doi.org/10.11646/zootaxa.5254.4.11
Publication status	Published - 14 Mar 2023

Keywords

adaptive radiation
Gulf of Guinea Islands
Hydraena
Hydraenidae
new species

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Animal Science and Zoology

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10.11646/zootaxa.5254.4.11

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title = "Two new species of Hydraena Kugelann, 1794 from S{\~a}o Tom{\'e} Island-an apparent adaptive radiation (Coleoptera, Hydraenidae)",

abstract = "Hydraena saotometerrestris sp. nov. and H. turneri sp. nov. are described from S{\~a}o Tom{\'e} island in the Gulf of Guinea. Both species belong to the subgenus Hydraenopsis Janssens, 1972 and were collected from primary forest locations; H. turneri sp. nov. found living aquatically in a small seepage over rock and clay. In contrast, H. saotometerrestris sp. nov. was collected from damp forest litter, far from water, in two mountainous locations on S{\~a}o Tom{\'e} and is apparently terrestrial. The overall habitus and similar form of aedeagus in the new species strongly suggest they are closely related, pointing to apparent adaptive radiation following a single colonization of this oceanic island.",

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T1 - Two new species of Hydraena Kugelann, 1794 from São Tomé Island-an apparent adaptive radiation (Coleoptera, Hydraenidae)

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N2 - Hydraena saotometerrestris sp. nov. and H. turneri sp. nov. are described from São Tomé island in the Gulf of Guinea. Both species belong to the subgenus Hydraenopsis Janssens, 1972 and were collected from primary forest locations; H. turneri sp. nov. found living aquatically in a small seepage over rock and clay. In contrast, H. saotometerrestris sp. nov. was collected from damp forest litter, far from water, in two mountainous locations on São Tomé and is apparently terrestrial. The overall habitus and similar form of aedeagus in the new species strongly suggest they are closely related, pointing to apparent adaptive radiation following a single colonization of this oceanic island.

AB - Hydraena saotometerrestris sp. nov. and H. turneri sp. nov. are described from São Tomé island in the Gulf of Guinea. Both species belong to the subgenus Hydraenopsis Janssens, 1972 and were collected from primary forest locations; H. turneri sp. nov. found living aquatically in a small seepage over rock and clay. In contrast, H. saotometerrestris sp. nov. was collected from damp forest litter, far from water, in two mountainous locations on São Tomé and is apparently terrestrial. The overall habitus and similar form of aedeagus in the new species strongly suggest they are closely related, pointing to apparent adaptive radiation following a single colonization of this oceanic island.

KW - adaptive radiation

KW - Gulf of Guinea Islands

KW - Hydraena

KW - Hydraenidae

KW - new species

UR - https://www.scopus.com/pages/publications/85150506733

U2 - 10.11646/zootaxa.5254.4.11

DO - 10.11646/zootaxa.5254.4.11

M3 - Article

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AN - SCOPUS:85150506733

SN - 1175-5326

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JO - Zootaxa

JF - Zootaxa

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Two new species of Hydraena Kugelann, 1794 from São Tomé Island-an apparent adaptive radiation (Coleoptera, Hydraenidae)

Abstract

Keywords

ASJC Scopus subject areas

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