FIGURE 5 in Systematics of north African Agama (Reptilia: Agamidae): a new species from the central Saharan mountains

FIGURE 5. Adult males of the other members of the Agama impalearis group. A: A. impalearis, PGe.840, adult male, Algeria, Moudjebarah frescos near Aïn Naga village, photo J. Viglione. Note the broad (3–4 scales wide), whitish vertebral stripe (orange to red in A. tassiliensis n. sp.) and the less pointed snout than in A. tassiliensis. B: A. spinosa, T3092, adult male. Egypt, Wadi el Gemal, photo P.-A. Crochet. Note the throat and the eye surround which are bloody red (not bright red, vermillon or orange as A. tassiliensis n. sp.), and the higher, pure white crest compared with A. tassiliensis. C: A. boueti, PGe.1002, adult male, Niger, Termit mountain, photo M. Ascani. Note the reduced number of crest spines (6 in this specimen), the relatively faded coulouration and the uniformly pale throat. D: A. boueti of the "castroviejoi" morphotype, PGe.847, adult male, Mauritania, track from Nouatil pass to Zerga, photo P. Geniez. Note the reduced number of crest spines (7 in this specimen) and the whitish vertebral stripe which is relatively narrow, not exceeding two scales in width.