A new species of Ergasilus (Copepoda: Ergasilidae) from Geophagus altifrons and G. argyrostictus (Perciformes: Cichlidae) in the Brazilian Amazon

被引：0
作者：
Naraiana Lopes Taborda
Fabiano Paschoal
José Luis Luque
机构：
[1] Programa de Pós-Graduação em Ciências Veterinárias da Universidade Federal Rural do Rio de Janeiro,Departamento de Parasitologia Animal
[2] Programa de Pós-Graduação em Biologia Animal da Universidade Federal Rural do Rio de Janeiro,undefined
[3] Universidade Federal Rural do Rio de Janeiro,undefined
来源：
Acta Parasitologica | 2016年 / 61卷
关键词：
Copepoda; Ergasilidae; Cichlidae; Xingu River; Brazil;
D O I：
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中图分类号：
学科分类号：
摘要：
A new species of ergasilid copepod, Ergasilus xinguensis n. sp., is described from females found on the gills of two cichlid fishes, Geophagus argyrostictus (Kullander, 1991) (type host) and G. altifrons (Heckel, 1840), from the Brazilian Amazon. The new species can be distinguished from congeners by the unique combination of the following characteristics: the cephalothorax is not inflated and is slightly constricted, the first antennulary segment bears 3 setae, maxillule with 3 unequal outer setae without minute process medially, maxilla has a large syncoxa with one seta near its basis, first and fourth legs are with a 3-segmented endopod, base of the exopod in leg 2 with a conspicuous bluntly-pointed projection and caudal ramus with two rows of curved conical spinules on ventral surface. The new species is the second member of Ergasilus von Nordmann, 1832 found on cichlids of the genus Geophagus (Heckel).
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页码：549 / 555
页数：6
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