Two new species of Aricidea Webster, 1879 (Paraonidae), Aricidea (Acmira) anusakdiisp. nov. and Aricidea (Aricidea) thammapinanaesp. nov. were collected from 10–26.5 m depth, in soft bottoms with mud mixed with sand and shells at Songkhla Sea, the Gulf of Thailand between 2011–2018. Aricidea (Acmira) anusakdiisp. nov. is clearly distinguished from other species of the subgenus Acmira by having a rounded bilobed prostomium divided by a slight notch on the anterior margin; red pigments on the subdistal to the tip of each branchia (new character); two prebranchial chaetigers; 48–68 pairs of branchiae; and modified neurochaetae as strong curved spines with blunt shafts surrounded by pubescence from chaetigers 19–44. On the other hand, Aricidea (Aricidea) thammapinanaesp. nov. can be separated from other members of the subgenus Aricidea by the presence of a biarticulated median antenna; distinctive notopodial lobes as broad triangular with short distal protuberances on chaetiger 3, 4–8 pairs of branchiae; and modified neurochaetae as bidentate neurochaetae with a long pubescent subterminal arista on the concave side. All data have been archived and are freely available from the Dryad Digital Repository (https://doi.org/10.5061/dryad.hqbzkh1cn).

中文翻译：

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来自西太平洋泰国湾的Paraonidae（Annelida）的两个新物种的描述。

两种新的Aricidea Webster物种，1879年（Paraonidae），Aricidea（Acmira）anusakdiisp。十一月 和Aricidea（Aricidea）thammapinanaesp。十一月 在2011年至2018年之间，在泰国湾宋卡海的10–26.5 m深度的软底中，将泥与沙子和贝壳混合在一起，收集了软底。Aricidea（Acmira）anusakdiisp。十一月 通过将圆形的双瓣前pro除以前缘上的一个小凹口，可以明显地区别于Acmira属的其他物种；在每个ia骨尖端近旁的红色颜料（新字符）；两个分支前陪审员；48-68对of子；和变态的神经cha科动物，如坚硬的弯曲的棘刺，带有钝的轴，周围环绕着19-44岁的小豹子。另一方面，Aricidea（Aricidea）thammapinanaesp。十一月 可以通过双关节正中天线与Aricidea属的其他成员分开；chatetiger 3、4-8对小ia上的独特三足叶裂片为宽三角形，远端短突起。修饰的神经cha为双齿神经cha，凹侧长有短柔毛的亚末端亚里斯塔。所有数据均已存档，可从Dryad数字存储库（https://doi.org/10.5061/dryad.hqbzkh1cn）免费获得。