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Description of two new species of Ectinorus (Ectinorus) (Siphonaptera, Rhopalopsyllidae) from Argentina, including a morphometric approach.
Acta Tropica ( IF 2.7 ) Pub Date : 2020-07-02 , DOI: 10.1016/j.actatropica.2020.105612
M Fernanda López-Berrizbeitia 1 , M Julieta Pérez 2 , Rubén M Barquez 2
Affiliation  

Two new species of fleas of genus Ectinorus (Siphonaptera: Rhopalopsyllidae) are described from sigmodontine rodents (Rodentia: Cricetidae) collected during a survey of small mammals in northwestern Argentina.The new species belong to the subgenus Ectinorus and can be distinguished from all other species of the subgenus by the characteristics of the modified abdominal segments and by the genitalia. Moreover, the male of Ectinorus (Ectinorus) disjugis is described for the first time and the finding of this flea parasitizing the rodent Akodon spegazzinii, constitutes a new flea–host association. A phylogenetic analysis of the genus Ectinorus, using traditional morphological characters and morphogeometric data, is presented to support the erection of the new species of Ectinorus. An identification key for all species of Ectinorus is also provided. Our study increases to 38 the total number of species of the subgenus Ectinorus, and to 20 the number for Argentina. Phylogenetic analyses reveal that Ectinorus is monophyletic but the subgenera are not. This study offers a new interpretation of morphological diversity within the genus as well as an evaluation of hypotheses about their relationships.



中文翻译:

描述了来自阿根廷的两个新物种的食藻属(Ectinorus)(水生昆虫科,Rhopalopsyllidae),包括形态计量学方法。

阿根廷西北部小型哺乳动物的一次乙状结肠啮齿类动物(啮齿类动物:C科)描述了两个新物种的埃奇诺跳蚤(Siphonaptera:Rhopalopsyllidae),它们属于埃奇诺亚属,可以与所有其他物种区分开通过修饰的腹部节段的特征和生殖器来区分亚属。此外,首次描述了EctinorusEctinorusdisjugis的雄性,这种蚤将寄生在啮齿动物Akodon spegazzinii中的发现,构成了一种新的蚤-宿主关联。ct虫属的系统发育分析提出了使用传统形态特征和形态几何数据的方法,以支持新物种的勃起。还提供了一个对所有Ectinorus物种的识别码。我们的研究将Ectinorus属的物种总数增加到38 ,而阿根廷将增加到20。系统发育分析表明,Ectinorus是单系的,而亚属不是。这项研究为该属内的形态多样性提供了新的解释,并评估了它们之间的关系。

更新日期:2020-07-07
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