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On the invalidity of Strilloma Issaac (Copepoda: Monstrilloida): observations from the type species

Por: Suárez Morales, Eduardo. Doctor [autor/a].
Gasca, Rebeca [autor/a].
Tipo de material: Artículo impreso(a) y electrónico Artículo impreso(a) y electrónico Tema(s): Strilloma longa | Copépodos | Taxonomía animalTema(s) en inglés: Strilloma longa | Copepoda | Animal taxonomyClasificación: AR/595.34 / S93 Nota de acceso: Acceso en línea sin restricciones En: Zoological Studies. volumen 43, número 2 (2004), páginas 292-299. --ISSN: 1810-522XNúmero de sistema: 46069Resumen:
Inglés

The genus Strilloma was erected by M.J. Isaac in 1974 to contain species of Monstrilloida with 4 abdominal somites instead of 3, as in Monstrilla and Monstrillopsis, or with 2, as in Cymbasoma. This genus was described based on a single specimen of its type species, S. longa Isaac, 1974, collected 95 years ago in Florida, USA, and deposited in the Museum für Naturkunde in Berlin. Strilloma has been considered invalid by several authors, but the type species has not been reexamined since its description, and there are no concrete morphological data besides the roughly sketched original illustrations. A close examination of the holotype of S. longa allowed us to confirm that this species clearly belongs to Monstrilla. The partial suture around the genital double somite was misinterpreted as complete segmentation, a character state that is absent in the Monstrilloida; therefore, the 4 species previously assigned to Strilloma should be referred to Monstrilla, including Monstrilla scotti (Isaac, 1975), comb. nov. A complete, upgraded redescription of Monstrilla longa (comb. nov.) is presented along with a comparison to other closely related species possessing a relatively long distal antennular segment.

Recurso en línea: http://zoolstud.sinica.edu.tw/Journals/43.2/292.pdf
Lista(s) en las que aparece este ítem: Producción Rebeca Gasca
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Acceso en línea sin restricciones

The genus Strilloma was erected by M.J. Isaac in 1974 to contain species of Monstrilloida with 4 abdominal somites instead of 3, as in Monstrilla and Monstrillopsis, or with 2, as in Cymbasoma. This genus was described based on a single specimen of its type species, S. longa Isaac, 1974, collected 95 years ago in Florida, USA, and deposited in the Museum für Naturkunde in Berlin. Strilloma has been considered invalid by several authors, but the type species has not been reexamined since its description, and there are no concrete morphological data besides the roughly sketched original illustrations. A close examination of the holotype of S. longa allowed us to confirm that this species clearly belongs to Monstrilla. The partial suture around the genital double somite was misinterpreted as complete segmentation, a character state that is absent in the Monstrilloida; therefore, the 4 species previously assigned to Strilloma should be referred to Monstrilla, including Monstrilla scotti (Isaac, 1975), comb. nov. A complete, upgraded redescription of Monstrilla longa (comb. nov.) is presented along with a comparison to other closely related species possessing a relatively long distal antennular segment. eng

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