Urosaurus gadovi (SCHMIDT, 1921)
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Urosaurus gadovi
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| Higher Taxa | Phrynosomatidae, Sceloporinae; Iguania, Sauria, Squamata (lizards) |
| Subspecies | |
| Common Names | E: Gadow's Tree Lizard S: Arboricola de Gadow |
| Synonym | Phymatolepis (Uta) irregularis FISCHER 1881: 232 (nomen dubium) Uta irregularis — BOULENGER 1885: 216 Uta irregularis — GÜNTHER 1885: 62 Uta gadovi SCHMIDT 1921: 3 Uta irregularis — SMITH 1939 Urosaurus irregularis — MITTLEMAN 1942: 156 Urosaurus gadovi — MITTLEMAN 1942: 154 Uta gadovi SCHMIDT 1947 Urosaurus gadovi — SMITH & TAYLOR 1950: 145 Urosaurus irregularis — SMITH & TAYLOR 1950: 146 Urosaurus gadowi — DUELLMAN 1958 Urosaurus gadovi — LINER 1994 Urosaurus irregularis — LINER 1994 Urosaurus irregularis — LINER 2007 Urosaurus gadovi — LINER 2007 |
| Distribution | Mexico (Michoacan, Jalisco, Guerrero) Type locality: Cofradía, Jalisco, Mexico. irregularis: Mexico (no specific localiy known); Type locality: “Aus dem Hochlande von Mexico” |
| Reproduction | oviparous |
| Types | Holotype: AMNH 20355 Holotype: Museum Bremen, Germany, No. 437 (fide SMITH & TAYLOR 1950: 146); lost (L.L Grismer, cited in Wiens 1993) [irregularis] |
| Diagnosis | Diagnosis: Frontal entire, four to six rows of enlarged dorsal scales, abruptly larger than the granular scales with no granular scales on the vertebral line; dorsolateral line and lateral fold set with prominent tubercular scales, with a -row of tubercles between them; caudal scales strongly keeled, not spinose, in nearly uniform verticils (Schmidt 1921). Diagnosis. Frontal usually entire, rarely split transversely into a large anterior portion and a much smaller posterior section ; four to seven rows of enlarged dorsal scales along the median line, of which the median row is largest, and the remainder progressively diminish in size; no vertebrals separating the enlarged dorsals into parallel longitudinal series; enlarged dorsals extending posteriorly from the shoulders to the basal portion of the tail, or often ending in the sacral region; enlarged dorsals smaller than the enlarged femorals, and equal to or smaller than the tibials; external to the enlarged dorsals are several poorly defined, slightly enlarged clusters of tubercles, extending from axilla to groin ; on the dorsolateral line of the neck and body a dermal fold crested with numerous small series of enlarged tubercles interspersed with larger, flat, mucronate scales; usually another, short fold, restricted to the supra-axillary region; along the lateral areas are three to five longitudinal series of clustered tubercles; lowest series of tubercles often in contact with the ventrals; ventrals abruptly differentiated from the lateral granules; gular scales flat, and largely pavemented; scales of the gular fold elongate, mucronate, imbricate, and laterally, faintly keeled; ventrals imbricate, mucronate to spinose, and faintly keeled especially laterally, males with rather small postanals; postfemoral dermal pocket absent. Coloration (alcoholic): Dorsal color ranging from slatey gray (in melanistic specimens) to a lighter brownish gray, or brown; head, tail, and median line of back slightly lighter; three to six blackish cross-bands, about evenly distributed from cervical region to sacrum, these being about as wide as three to five of the largest dorsals; in all except the darkest specimens, the dorsolateral, lateral, and ventrolateral surfaces are maculated with whitish areas, these usually being restricted to small clusters of enlarged, tubercular scales which dot these areas; entire labial and gular region, save for a rounded area immediately anterior to the gular fold, spotted and irregularly streaked with black, these being heavier in the males; venter of limbs, basal portion of tail, and interhumeral and interfemoral areas whitish and lightly maculated with dark flecks; abdomen, from axilla to groin, covered with an overlay of blue in both sexes, but anteriorly more prominent and assuming an ovoid outline in males; tail faintly circled with narrow brown bands (Mittleman 1942: 154). Diagnosis (irregularis): see Mittleman 1942: 156. |
| Comment | Synonymy: The status of U. irregularis remains unclear. Known from only one type specimen of unknown origin (in the ”highlands of Mexico”) which is now lost. Wiens (1993) speculates that it actually might be an aberrant U. bicarinatus or U. gadovi, a hybrid between these two, or a valid species. Not recognized as valid species by WIENS et al. 2013. We call it provisionally a “nomen dubium” until further clarification. Distribution: see map in Feldman et al. 2011 (only 1 locality shown). |
| Etymology | Named after Hans Gadow, the collector of the holotype. |
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