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首页> 外文期刊>Zoological Science >A New Species of Heterospio (Polychaeta, Longosomatidae) from Offshore Angola
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A New Species of Heterospio (Polychaeta, Longosomatidae) from Offshore Angola

机译:安哥拉近海的一种新杂种(Polychaeta,Longosomatidae)

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摘要

A new polychaete species of the longosomatid genus Heterospio is described from the coastal shelf off Angola in the Southeast Atlantic. This species was found from two sampling points at depths of 105 and 146 m, and differs from other members of the family in having eight short thoracic setigers, in the lack of neuropodial acicular hooks in the first setiger, and in having only three pairs of branchiae. The material consists of 21 adults with gametes in the body cavity of posterior segments and one juvenile. Size-dependent variation in morphological features such as the length of midbody setigers, number of spines per rami, and occurrence of cinctures, is discussed. A key to the currently recognized species and possible undescribed forms of Heterospio is given.
机译:在东南大西洋安哥拉附近的沿海陆架上,描述了一种长鳍线虫异种的新的多毛类。该物种是在深度为105和146 m的两个采样点发现的,与该家族的其他成员不同,该物种有八个短胸吻齿,第一个吻齿鸟没有神经足针状钩,并且只有三对ia科。该材料由21名成年人的后节体腔和一名少年配子组成。讨论了形态特征的大小依赖性变化,例如中体短吻鳄的长度,每只拉米的刺数和发生结节。给出了目前公认的物种以及可能的未描述形式的异戊二烯的关键。

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