LIZARDS * Species introduced to the region. Family Anguidae Madrean Alligator Lizard (Elgaria kingii) Family Crotaphytidae Eastern Collared Lizard (Crotaphytus collaris) Sonoran Collared Lizard (Crotaphytus nebrius) Long-nosed Leopard Lizard (Gambelia wislizenii) Family Eublepharidae Western Banded Gecko (Coleonyx variegatus) Family Gekkonidae Mediterranean House Gecko (Hemidactylus turcicus*) Family Helodermatidae Gila Monster (Heloderma suspectum) Family Iguanidae Spiny-tailed Iguana (Ctenosaura sp. (conspicuosa and macrolopha)) Desert Iguana (Dipsosaurus dorsalis) Common Chuckwalla (Sauromalus ater) Family Phrynosomatidae Zebra-tailed Lizard (Callisaurus draconoides) Greater Earless Lizard (Cophosaurus texanus) Elegant Earless Lizard (Holbrookia elegans) Common Earless Lizard (Holbrookia maculata) Texas Horned Lizard (Phrynosoma cornutum) Rock Horned Lizard (Phrynosoma ditmarsi) Goode’s Horned Lizard (Phrynosoma goodei) Greater Short-horned Lizard (Phrynosoma hernandesi) Round-tailed Horned Lizard (Phrynosoma modestum) Regal Horned Lizard (Phrynosoma solare) Twin-spotted Spiny Lizard (Sceloporus bimaculosus) Clark’s Spiny Lizard (Sceloporus clarkii) Southwestern Fence Lizard (Sceloporus cowlesi) Yarrow’s Spiny Lizard (Sceloporus jarrovii) Desert Spiny Lizard (Sceloporus magister) Slevin’s Bunchgrass Lizard (Sceloporus slevini) Plateau Lizard (Sceloporus tristichus) Striped Plateau Lizard (Sceloporus virgatus) Long-tailed Brush-lizard (Urosaurus graciosus) Ornate Tree Lizard (Urosaurus ornatus) Common Side-blotched Lizard (Uta stansburiana) Family Scincidae Ocellated Skink (Chalcides ocellatus*) Mountain Skink (Plestiodon callicephalus) Great Plains Skink (Plestiodon obsoletus) Family Teiidae Arizona Striped Whiptail (Aspidoscelis arizonae) Chihuahuan Spotted Whiptail (Aspidoscelis exsanguis) Gila Spotted Whiptail (Aspidoscelis flagellicauda) Pai Striped Whiptail (Aspidoscelis pai) Sonoran Spotted Whiptail (Aspidoscelis sonorae) Giant Spotted Whiptail (Aspidoscelis stictogramma) Tiger Whiptail (Aspidoscelis tigris) Desert Grassland Whiptail (Aspidoscelis uniparens) Plateau Striped Whiptail (Aspidoscelis velox) Red-backed Whiptail (Aspidoscelis xanthonota) Family Xantusiidae Bezy’s Night Lizard (Xantusia bezyi) Desert Night Lizard (Xantusia vigilis)