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| dct:abstract
| - The species of the Hydaticus (Prodaticus) fabricii group (Coleoptera: Dytiscidae) are reviewed on the basis of the aedeagal median lobes and the elytral colour patterns; eighteen species (including two new species: H. geiseri sp.n. and H. mazzoldii sp.n.) and one subspecies of the H. fabricii group are treated. The H. grammicus species group is newly established. It is distinguished from the H. fabricii group by the male genitalia. Besides H. grammicus (GERMAR, 1827), this group includes H. thermo-nectoides SHARP, 1884 and two new species (H. schoenleithneri sp.n., H. shaverdoae sp.n.). Hyda-ticus parallelus CLARK, 1864, H. chrisi NILSSON, 2001 and another undescribed species, H. borneensis sp.n., are also included in this review, because their elytral colour patterns are similar to those of some species of the H. fabricii and H. grammicus groups, but their male genitalia are distinctly different.A lectotype is designated for Dytiscus varius FABRICIUS, 1801 (= Hydaticus fabricii (MACLEAY, 1825)). Hydaticus fabricii loeffleri WEWALKA, 1979 and H. fabricii confusus BOHEMAN, 1858 are elevated to species rank, and H. tibetanus SHAVERDO et al., 2012 is synonymized with H. vaziranii WEWALKA, 1979.Checklists and keys to the species treated herein, as well as distribution maps and numerous new faunistic records are provided. Significant diagnostic characters are illustrated.
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| bibo:abstract
| - The species of the Hydaticus (Prodaticus) fabricii group (Coleoptera: Dytiscidae) are reviewed on the basis of the aedeagal median lobes and the elytral colour patterns; eighteen species (including two new species: H. geiseri sp.n. and H. mazzoldii sp.n.) and one subspecies of the H. fabricii group are treated. The H. grammicus species group is newly established. It is distinguished from the H. fabricii group by the male genitalia. Besides H. grammicus (GERMAR, 1827), this group includes H. thermo-nectoides SHARP, 1884 and two new species (H. schoenleithneri sp.n., H. shaverdoae sp.n.). Hyda-ticus parallelus CLARK, 1864, H. chrisi NILSSON, 2001 and another undescribed species, H. borneensis sp.n., are also included in this review, because their elytral colour patterns are similar to those of some species of the H. fabricii and H. grammicus groups, but their male genitalia are distinctly different.A lectotype is designated for Dytiscus varius FABRICIUS, 1801 (= Hydaticus fabricii (MACLEAY, 1825)). Hydaticus fabricii loeffleri WEWALKA, 1979 and H. fabricii confusus BOHEMAN, 1858 are elevated to species rank, and H. tibetanus SHAVERDO et al., 2012 is synonymized with H. vaziranii WEWALKA, 1979.Checklists and keys to the species treated herein, as well as distribution maps and numerous new faunistic records are provided. Significant diagnostic characters are illustrated.
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| dct:bibliographicCitation
| - Wewalka, G. 2023. Review of the <em>Hydaticus fabricii </em>group and the newly established H. grammicus group (Coleoptera: Dytiscidae). <em>Koleopterologische Rundschau</em>, 92: 1-72.
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