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Macropholidus ataktolepis CADLE & CHUNA, 1995

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Higher TaxaGymnophthalmidae (Cercosaurinae), Sauria, Gymnophthalmoidea, Squamata (lizards)
Subspecies 
Common Names 
SynonymMacropholidus ataktolepis CADLE & CHUNA 1995
Macropholis ataktolepis — LEHR 2002: 202 (in error) 
DistributionNW Peru

Type locality: “Bosque Cachil, approximately 3 km (airline) SE Contumazá, 2400 m, Cajamarca Department, Peru (7° 23’ S, 78° 47’ W)”.  
Reproductionoviparous 
TypesHolotype: MCZ 178050, adult female 
DiagnosisDiagnosis: Macropholidus ataktolepis differs from the only other species of the genus, M. ruthveni, in having (1) a pair of prefrontal scales (absent in ruthveni); (2) the paired series of enlarged middorsal scale rows continuous only on the anterior part of the body (continuous to, or nearly to, the tail base in ruthveni); and (3) a regular arrangement of four enlarged temporal scales (irregular in number [1-7] and arrangement in ruthveni). Macropholidus ataktolepis differs from Pholidobolus (formerly Macropholidus) annectens (Parker) in having prefrontal scales and a double row of enlarged medial dorsal scales on the anterior part of the body. No species of Pholidobolus, as currently defined (Montanucci, 1973), has a double row of enlarged medial dorsals (see additional comments later). (Cadle & Cunha 1995)


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CommentAbundance: only known from its original description (Meiri et al. 2017). Only known from 4 specimens in the type series (Cadle & Cunha 1995).

Synonymy: Montanucci (1973) transferred annectens to Pholidobolus but retained Macropholidus as a monotypic genus characterized by the enlarged dorsals, a feature not seen in Pholidobolus (Montanucci, 1973:5). 
EtymologyNamed after Greek ataktos (ἄτακτως),in an irregular, disorderly manner + Greek lepis (λεπίς), scale. [“...The species name, a noun in apposition derived from the Greek ataktos (disordered, irregular, not arranged) + lepis (scale), alludes to the disruption of the orderly array of enlarged dorsal rows in this species, as compared to the completely regular series in the type species of the genus...”]. (from Esteban Lavilla, pers. comm., May 2024) 
References
  • Cadle J E; Chuna M P 1995. A new lizard of the genus Macropholidus (Teiidae) from a relictual humid forest of northwestern Peru, and notes on Macropholidus ruthveni Noble. Breviora (501): 1-39 - get paper here
  • Lehr, E. 2002. Amphibien und Reptilien in Peru. Natur und Tier-Verlag (Münster), 208 pp. - get paper here
  • Meiri, Shai; Aaron M. Bauer, Allen Allison, Fernando Castro-Herrera, Laurent Chirio, Guarino Colli, Indraneil Das, Tiffany M. Doan, Frank Glaw, Lee L. Grismer, Marinus Hoogmoed, Fred Kraus, Matthew LeBreton, Danny Meirte, Zoltán T. Nagy, Cristiano d 2017. Extinct, obscure or imaginary: the lizard species with the smallest ranges. Diversity and Distributions 24 (2): 262-273 - get paper here
 
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