Ameiva nodam KOCH, VENEGAS, RÖDDER, FLECKS & BÖHME, 2013
Can you confirm these amateur observations of Ameiva nodam?
|Higher Taxa||Teiidae, Teiinae, Gymnophthalmoidea, Sauria, Squamata (lizards)|
|Synonym||Ameiva nodam KOCH, VENEGAS, RÖDDER, FLECKS & BÖHME 2013|
Cnemidophorus divisus FISCHER 1879
Ameiva bifrontata divisa—RUTHVEN 1924
Ameiva bifrontata divisa—BURT & BURT 1931
Ameiva bifrontata divisa—BURT & BURT 1933
Type locality: Bellavista, Province of Jaén, Region of Cajamarca, Peru (05°38’15.6’’S, 78°37’59.2’’W, 390–440 m elevation).
|Types||Holotype: CORBIDI 1870, adult male, Figs. 1A–F, 2A,B), collected 09 May 2008 by P. Venegas and C. Koch.|
|Diagnosis||Diagnosis and comparison. This comparatively small Ameiva is diagnosed by the following combination of characters: (1) maximum known SVL of 101mm; (2) lacking longitudinal ridge on frontal scale; (3) frontal plate divided in two subequal scales; (4) postnasals separated from prefrontals by frontonasals; (5) parietal scales usually five; (6) median gular scales not enlarged; (7) enlarged median mesoptychial scales slightly larger than largest gulars; (8) gulars posterior to the interauricular crease smaller than anterior gulars; (9) nasal suture passes centrally through nostril; (10) rostral contacting postnasals; (11) supranasals not contacting supralabials; (12) scales of circumorbital semicircle not extending to anterior margin of third supraocular; (13) 28–33 enlarged ventral scales between gular and vent; (14) 10 longitudinal rows of ventral plates, outermost often distinctly smaller; (15) 86–113 DOM; (16) 165–216 DL; (17) postbrachials dilated; (18) 25–35 LFT; (19) 27–32 SCF; (20) 10–19 FP; (21) five longitudinal yellows stripes on dorsum distinct in juveniles and females, less distinct in most males.|
Ameiva nodam sp. nov. can be distinguished from all other described mainland congeners except for A. bifrontata and A. concolor by having a transversely divided frontal plate. From the latter two it differs in the color pattern and from A. concolor also by having the postbrachials dilated.
Especially due to the color pattern of female specimens with five longitudinal yellow dorsal stripes on a brown ground color the new species resembles Medopheos edracanthus, a teiid species that was just recently split of the genus Ameiva and is now considered as being monotypic. It differs from this species by having the frontal plate divided, by lacking preanal spurs and by having 10 instead of 8 longitudinal rows of enlarged ventral scales.
|Comment||A. nodam sp. nov. has dilated postbrachials, a maximum known snout-vent length of 101 mm, 10 longitudinal rows of ventral plates, 86–113 midbody granules, 25–35 lamellae under the fourth toe, and a color pattern with 5 longitudinal yellow stripes on the dorsum.|
|Etymology||“The specific epithet is an agglutination of the exclamation “no dam”. We chose this peculiar name to protest against the possible dam construction activities for four hydroelectricity projects along the Marañón river, between the Regions of Cajamarca and Amazonas. With this we are trying to call attention to the fact that the unique dry forest habitat of this and other endemic species, several of them have only recently been discovered (Koch et al. 2006, 2011; Venegas et al. 2008), is gravely threatened by human interventions.” (KOCH et al. 2013)|
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