SCOLODIAPTOMUS, A NEW GENUS PROPOSED FOR DIAPTOMUS (SENSU LATO) CORDEROI WRIGHT, AND DESCRIPTION OF NOTODIAPTOMUS BRANDORFFI, NEW SPECIES (COPEPODA: CALANOIDA), FROM BRAZIL
| Autor: | Janet W. Reid |
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| Rok vydání: | 1987 |
| Předmět: | |
| Zdroj: | Journal of Crustacean Biology. 7:364-379 |
| ISSN: | 1937-240X 0278-0372 |
| Popis: | A new genus, Scolodiaptomus (Copepoda: Calanoida: Diaptomidae), is proposed for Diaptomus corderoi Wright, 1936, from southeastern Brazil. Scolodiaptomus corderoi is redescribed. The genus is defined principally by characters of the female: the prominent spine on the anterior face of the first exopod article of the fifth leg, and the partial dorsal division of the genital segment. Important distinguishing characters of the males include the proportions of spines on the right antennule, and proportions and structures of the fifth legs. The genus is closely related to Notodiaptomus Kiefer, 1936. Notodiaptomus brandorffi, new species, is described from northeastern Brazil. Some current problems in the taxonomy of neotropical diaptomids are discussed. Incomplete knowledge of the morphology of many neotropical species of Diaptomidae has contributed to confusion in the diagnoses of some genera and in problems in the inference of species relationships. Examination of specimens of Diaptomus (sensu lato) corderoi Wright, collected in the type-locality and two reservoirs in the State of Minas Gerais, southeastern Brazil, has resulted in the observation of some previously unrecognized characters that are sufficient to distinguish a new genus. Specimens of a second species, collected in the State of Maranhao, northeastern Brazil, were confided to me for determination by Profa. Maria S. R. Ibainez. It is described below as Notodiaptomus brandorffi, new species. Specimens collected by E. R. dos Santos in the State of Sergipe and transmitted to me by Prof. Carlos E. F. da Rocha are also N. brandorffi. Several taxonomic problems and errors in procedure which have appeared in recent publications on neotropical diaptomids are also discussed. |
| Databáze: | OpenAIRE |
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