Taxonomia de Hydrophilidae (Insecta: Coleoptera) de lagos da savana de Roraima, Brasil
Water beetles are the main group of freshwater arthropods, both, by the number of species as by its importance, since they participate in the aquatic chains and food webs. One of the most abundant and rich families of aquatic Coleoptera is Hydrophilidae, with approximately 2,840 described species...
| Autor principal: | Santana, Larissa Oliveira de |
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| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Instituto Nacional de Pesquisas da Amazônia - INPA
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/12521 http://lattes.cnpq.br/8306312448982945 |
| Resumo: |
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Water beetles are the main group of freshwater arthropods, both, by the number of species as
by its importance, since they participate in the aquatic chains and food webs. One of the most
abundant and rich families of aquatic Coleoptera is Hydrophilidae, with approximately 2,840
described species distributed in 174 genera and 5 subfamilies, distributed worldwide. Despite
the great diversity and richness of the group, their knowledge is still limited, mainly due to the
lack of specialists and the availability of tools that aim at the identification of the species. The
present study aimed to characterize the genera of Hydrophilidae found in the study area, to
describe the new species, to redescribe species with description short and brief, to make
identification key for genera and species and to provide information on the geographic
distribution of the species. The samples were performed in June and August of 2015 in 26
lakes of the Roraima savanna. It were collected 1863 adults belongs to five subfamilies, five
tribes, ten genera and 35 species, of which seven are new to science: Berosus apiciflatus sp.
nov.; Berosus atratus sp. nov.; Berosus cordatus sp. nov.; Berosus aurifer sp. nov.; Berosus
clarksoni sp. nov.; Crenitulus savanna sp. nov. and Derallus roraimenses sp. nov. Of the
species found in the present study nine are new records for Brazil (Berosus castaneus Oliva &
Short, 2012; Berosus llanensis Oliva & Short, 2012; Berosus megaphallus Oliva & Short,
2012; Berosus olivae Queney, 2006; Berosus repertus Oliva & Short, 2012; Paracymus
sedatus Wooldridge, 1973; Hydrophilus simulator Bedel, 1891; Tropisternus apicipalpis
Fabricius, 1775; Tropisternus laevis Sturm, 1826) and all species are new records for Roraima
State. An identification key is provided for the genera and species registered for the study
area, based on both, external morphological characters and on characteristics of the male
genitalia. In addition, diagnoses and comments were included, as well as maps with
geographical records for each species. |