Figures 1–2. Abdominal spine homology and measurements taken for this study. Fig. 1. Chaetacis bandeirante, female habitus, dorsal. Arrows indicate primary apodemes. Fig. 2. Chaetacis bandeirante, female habitus, lateral. Abbreviations: AS, anterior spine; AW, abdomen width; CL, carapace length; CW, carapace width; ES, eye interdistance; FL, femur length; FSL, first posterior spine length; LS1, first lateral spine; LS2, second lateral spine; LS3, third lateral spine; PS1, first posterior spine; PS2, second posterior spine; PS3, third posterior spine; RW, rim width; SCL, spinneret cone length. Scale bars = 1 mm.

Published as part of Magalhães, Ivan L. F. & Santos, Adalberto J., 2012, Phylogenetic analysis of Micrathena and Chaetacis spiders (Araneae: Araneidae) reveals multiple origins of extreme sexual size dimorphism and long abdominal spines, pp. 14-53 in Zoological Journal of the Linnean Society 166 (5) on page 19, DOI: 10.1111/j.1096-3642.2012.00831.x, http://zenodo.org/record/5408308