Contributions to Zoology, 85 (1) 1-11 (2016) Intraspecific morphological variation of the scorpionfly Dicerapanorpa magna (Chou) (Mecoptera: Panorpidae) based on geometric morphometric analysis of wings Mei Liu1, Na Ma1, 2, Bao-Zhen Hua1, 3 1 State Key Laboratory of Crop Stress Biology for Arid Areas, Entomological Museum, Northwest A&F University, Yangling, Shaanxi 712100, China 2 School of Agricultural Engineering, Henan Provincial Key Laboratory of Funiu Mountain Insect Biology, Nanyang Normal University, Nanyang, Henan 473061, China 3 E-mail:
[email protected] Key words: canonical variates analysis, individual variation, sexual dimorphism Abstract Stillwell et al., 2005; Neto et al., 2013). Morphological variation provides a major source of characters and Wing shape variation was investigated between the sexes and character states in traditional taxonomy (Michaux, Dicerapanorpa mag- among four populations of the scorpionfly 1989; McPeek, 1990). However, it is often difficult to na (Chou, 1981) endemic to the Qin-Ba Mountains area, China through the landmark-based geometric morphometric approach. determine whether variation is intraspecific or inter- The results show that sexual dimorphism exists both in wing specific in taxonomic practice (Nedeljković et al., 2013; size and shape in D. magna. Significant differences exist in fe- Riedel et al., 2013; Barão et al., 2014). male wing size and shape among D. magna populations. The Landmark-based geometric morphometrics is an possible reasons of the wing variation are discussed based on the effective tool to quantify and analyze the overall shape divergence time of D. magna in combination with the tectonic and climatic events in the Qin-Ba Mountains during the late of biological structures based on two- or three-dimen- Miocene-Pleistocene period.