Fig. 1
From: Systemic paralogy and function of retinal determination network homologs in arachnids
Study species and their corresponding eye arrangements. a: Schematic representation of the eyes of Charinus whip spiders (Amblypygi) (upper), and the spider Parasteatoda tepidariorum (Araneae; lower). b: Live specimen of C. ioanniticus from Khirbet Haruba cave (Haruva cave). Inset: detail of the median eyes. c: Live specimen of C. israelensis from Mimlach cave. Inset: detail of the reduced median eyes. d: Live specimen of P. tepidariorum, and schematic representation of the expression patterns of paralog pairs of Ptep-sine oculis (soA/soB), Ptep-orthodenticle (otdA/otdB), and Ptep-Optix (OptixA/OptixB) in the eyes. ME: median eyes; ALE: anterior lateral eyes; PLE: posterior lateral eyes; MLE: median lateral eyes; LE: lateral eyes. B–C by Shlomi Aharon; D by Jesús A. Ballesteros