Morphometric study and sexual dimorphism analyses in an Iranian population of Scorpio maurus (Arachnida: Scorpionidae)

Scorpio maurus (Scorpiones: Scorpionidae) which has a worldwide distribution, indicates levels of sexual dimorphism. Morphometry is used to determine the sexual dimorphism between the two sexes. In this study, 53 morphological characters of 15 specimens of each sex of Scorpio maurus were studied, however dimorphism was only observed in 21 morphological characters, including chelicerae and carapace length, pedipalp characters, width of the second segment of metasoma, telson and pectin length, number of left pectin teeth, and some of the leg's segments.马氏蝎（Scorpio maurus，隶属于蝎目(Scorpiones)蝎科(Scorpionidae)）为广布物种，存在性二型（sexual dimorphism）现象。本研究借助形态测量学（morphometry）方法，旨在明确该物种两性间的性二型差异。本次研究对雌雄两性各15号标本的53项形态特征展开观测，但最终仅在21项形态特征中观测到显著的性二型差异，具体包括螯肢（chelicerae）与头胸甲（carapace）长度、触肢（pedipalp）相关特征、后腹部（metasoma）第二节宽度、尾节（telson）与栉板（pectin）长度、左侧栉板齿数，以及部分足节结构。