Paresque Karla, Fukuda Marcelo Veronesi, Nogueira João Miguel De Matos
Laboratório de Poliquetologia (LaPol), Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, R. do Matão, travessa 14, n. 101, 05508-090, São Paulo, SP, Brazil; Email:
Laboratório de Poliquetologia (LaPol), Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, R. do Matão, travessa 14, n. 101, 05508-090, São Paulo, SP, Brazil; Email: unknown.
Zootaxa. 2014 Apr 23;3790:501-33. doi: 10.11646/zootaxa.3790.4.1.
A new species of Exogone, E. gigas sp. n., is described herein, together with E. africana, E. arenosa, E. dispar, E. naidinoides, E. rolani, and E. simplex, collected along the Brazilian coast, including new morphological details. The distribution of E. breviantennata is expanded to include the states of Espírito Santo, Paraíba and Pernambuco. Exogone gigas sp. n. is characterized by having a large median antenna, the absence of dorsal cirri on chaetiger 2, and having a triangular process and minute spines on the shaft of the spiniger-like chaetae on chaetiger 2. The Brazilian specimens are compared to the morphologically most similar congeners. A key for the species described in this paper is provided.
本文描述了一种新的外肋虫属物种，即巨型外肋虫（Exogone gigas sp. n.），同时还介绍了在巴西海岸采集到的非洲外肋虫（E. africana）、砂质外肋虫（E. arenosa）、不同外肋虫（E. dispar）、类奈氏外肋虫（E. naidinoides）、罗兰氏外肋虫（E. rolani）和简单外肋虫（E. simplex），包括新的形态学细节。短触角外肋虫（E. breviantennata）的分布范围扩大到包括圣埃斯皮里图州、帕拉伊巴州和伯南布哥州。巨型外肋虫（Exogone gigas sp. n.）的特征是具有一根大的中触角，第2刚节上没有背须，并且在第2刚节的刺状刚毛的柄上有一个三角形突起和微小的刺。将巴西的标本与形态上最相似的同属物种进行了比较。提供了本文所描述物种的检索表。
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