PDF(Pubmed)
Abstract：
UNASSIGNED: The marine isopod family Acanthaspidiidae Menzies, 1962 (Asellota, Janiroidea) has global distribution from shelf to hadal depth. The majority of species has been recorded from relatively deep waters and the Southern Hemisphere. To date, 36 species have been described in the family belonging to three genera: Ianthopsis Beddard, 1886; Iolanthe Beddard, 1886; and Mexicope Hooker, 1985.
UNASSIGNED: Here, a new species of Mexicope is described from Maltese waters, adding a fourth species to the genus. It is the first member of the family reported from the Mediterranean Sea. The new species can be recognised by the unique combination of the following characters: cephalothorax with pre-ocular spine large and pointed anterolaterally, rostral projection blunt, eyes reduced; pereonal sternites each with one ventral spine; pereonite two lateral margins with single projection; pleotelson posterior apex long, projecting to approximately half of the length of the uropod protopod; pleopods I distolateral lobes projecting beyond distomedial lobes, apices curved and pointed laterally; uropod exopod length approximately 0.5 endopod length. An identification key to the species of Mexicope is presented and the generic diagnoses of Ianthopsis and Mexicope are compared, discussed and revised.
UNASSIGNED: Here, a new species of Mexicope is described from Maltese waters, adding a fourth species to the genus. It is the first member of the family reported from the Mediterranean Sea. The new species can be recognised by the unique combination of the following characters: cephalothorax with pre-ocular spine large and pointed anterolaterally, rostral projection blunt, eyes reduced; pereonal sternites each with one ventral spine; pereonite two lateral margins with single projection; pleotelson posterior apex long, projecting to approximately half of the length of the uropod protopod; pleopods I distolateral lobes projecting beyond distomedial lobes, apices curved and pointed laterally; uropod exopod length approximately 0.5 endopod length. An identification key to the species of Mexicope is presented and the generic diagnoses of Ianthopsis and Mexicope are compared, discussed and revised.
摘要：
■海洋等足类动物AcanthaspiidaeMenzies，1962（Asellota，Janiroidea）具有从架子到hadal深度的全球分布。大多数物种是从相对较深的水域和南半球记录的。迄今为止,在属于三个属的家族中已经描述了36种：伊桑·贝德达德，1886年；IolantheBeddard，1886年；和墨西哥胡克，1985年。
■这里，从马耳他水域描述了一种新的墨西哥物种，为该属增加了第四个物种。这是地中海报道的该家族的第一个成员。新物种可以通过以下特征的独特组合来识别：头颅胸具有眼前脊柱大且向前指向，头端投射钝，眼睛缩小；每个有一个腹脊的孔型胸鸣；孔型两个外侧边缘有单个突起；胸膜后尖长，突出到足足原足骨长度的大约一半；腹足类I突出到远端外叶，侧面弯曲和尖的顶点；尾足外足长度约0.5内足长度。提出了Mexicope物种的识别密钥，并比较了Ianthopsis和Mexicope的通用诊断，讨论和修订。
■这里，从马耳他水域描述了一种新的墨西哥物种，为该属增加了第四个物种。这是地中海报道的该家族的第一个成员。新物种可以通过以下特征的独特组合来识别：头颅胸具有眼前脊柱大且向前指向，头端投射钝，眼睛缩小；每个有一个腹脊的孔型胸鸣；孔型两个外侧边缘有单个突起；胸膜后尖长，突出到足足原足骨长度的大约一半；腹足类I突出到远端外叶，侧面弯曲和尖的顶点；尾足外足长度约0.5内足长度。提出了Mexicope物种的识别密钥，并比较了Ianthopsis和Mexicope的通用诊断，讨论和修订。
