来自泰国的范氏安特隆溞新种，新热带区布兰多氏安特隆溞（西涅夫和霍尔韦德尔，2002年）的姐妹种（枝角目：无甲目：盘肠溞科）

Anthalona vandammei sp. nov. from Thailand, a sibling species of Neotropical Anthalona brandorffi (Sinev & Holwedell, 2002) (Cladocera: Anomopoda: Chydoridae).

作者信息

Sinev Artem Y, Tiang-Nga Supatra, Sanoamuang Laorsri

机构信息

1Biological Faculty, M.V. Lomonosov Moscow State University, Leninskie gory, Moscow 119991, Russia. .

2Applied Taxonomic Research Center, Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand. .

出版信息

Zootaxa. 2023 Jan 19;5230(1):67-78. doi: 10.11646/zootaxa.5230.1.4.

DOI:10.11646/zootaxa.5230.1.4

PMID:37044857

Abstract

A new rare species of Anthalona Van Damme, Dumont & Sinev, 2011, Anthalona vandammei sp. nov. (Anomopoda: Chydoridae), is described from Thailand. It is a sister species of Neotropical Anthalona brandorffi (Sinev & Holwedell, 2002), sharing three important synapomorphies: (1) postabdomen widening distally in the anterior portion; (2) long posterior setae of valves, with the last setae located at the posteroventral angle of valves; and (3) only two flaming-torch setae of thoracic limbs IV. A. brandorffi and A. vandammei sp. nov. are similar habitually, but can be clearly distinguished by details of thoracic limb morphology. A. vandammei sp. nov. differs from A. brandorffi in (1) limb 1 IDL seta 3 with a basal spine much thicker and much longer than others, (2) longer setae e-f of endite 2 of limb I and (3) scraper 7 of limb II being only slightly smaller than scraper 6. The amphi-Pacific distribution of the brandorffi-clade of Anthalona is explained best by the Boreotropical hypothesis.

摘要

2011年，范丹姆、杜蒙和西涅夫描述了一种新的稀有物种——万氏安特洛蚤属（Anthalona Van Damme, Dumont & Sinev, 2011），万氏安特洛蚤（Anthalona vandammei sp. nov.），发现于泰国。它是新热带区的布兰多夫安特洛蚤（Neotropical Anthalona brandorffi (Sinev & Holwedell, 2002)）的姐妹物种，共有三个重要的共同衍征：（1）后腹部在前部向远端加宽；（2）壳瓣的后刚毛长，最后一根刚毛位于壳瓣的后腹角；（3）第四胸肢只有两根火炬状刚毛。布兰多夫安特洛蚤和万氏安特洛蚤在习性上相似，但可以通过胸肢形态的细节清楚地区分。万氏安特洛蚤与布兰多夫安特洛蚤的区别在于：（1）第一肢内肢背侧刚毛3的基部刺比其他的粗得多且长得多；（2）第一肢内叶2的e-f刚毛更长；（3）第二肢的刮器7仅比刮器6略小。安特洛蚤布兰多夫支系的环太平洋分布最好用北温带假说解释。