Gerrhonotus farri BRYSON & GRAHAM, 2010
Can you confirm these amateur observations of Gerrhonotus farri?
|Higher Taxa||Anguidae (Gerrhonotinae), Diploglossa, Anguimorpha, Sauria, Squamata (lizards)|
|Synonym||Gerrhonotus farri BRYSON & GRAHAM 2010|
Gerrhonotus farri — GARCÍA-VÁZQUEZ et al. 2018
Type locality: north of Magdaleno Cedillo, 27 km southwest of Tula, Municipio Tula, Tamaulipas, Mexico (22° 49’ 33.6’’ N, 99° 54’ 28.2’’ W, WGS84; 1067 m elevation).
|Types||Holotype: UANL 6600, an adult male collected by William L. Farr, Toby J. Hibbitts (field number TJH 881), and James R. Dixon on 26 September 2006.|
|Diagnosis||Diagnosis. Gerrhonotus farri can be distinguished from all other gerrhonotine lizards except G. lugoi and G. parvus in having smooth dorsal scales. Gerrhonotus farri, G. lugoi, and G. parvus lack a postrostral, further differentiating these species from other Gerrhonotus. Gerrhonotus farri and G. lugoi differ from G. parvus by possessing anterior internasals and a head very distinct from the neck, and by lacking rostral–nasal contact, contact between the supranasals, and cantholoreals. From G. lugoi, G. farri differs in number of longitudinal dorsal scale rows (14 vs. 18–19), longitudinal ventral scale rows (12 vs. 14), suboculars (2 vs. 3), and primary temporals (4 vs. 5). Furthermore, G. farri is longer (109 mm vs. 94 mm snout–vent length [SVL]) and more robust than G. lugoi, and possesses a unique color pattern of white stippling on the head and suffusion of dark-edged white dots dorsolaterally, seen only in one other specimen of G. parvus (UANL 6220). These differences are summarized in Table 1. Of questionable importance is the presence of two seemingly azygous, longitudinally oriented scales separating the prefrontals in G. farri (Fig. 2). These scales were not present in any of the other specimens we examined, and not reported by Good (1988) after his examination of nearly 1000 gerrhontine lizards. To our knowledge, no other gerrhonotine lizards have these scales.|
|Comment||Abundance: only known from the type specimen (Meiri et al. 2017).|
|Etymology||Etymology.—The specific epithet, an unlatinized noun in the genitive singular case, is a patronym honoring William L. Farr who helped collecting the type specimen of this species.|