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Abronia martindelcampoi FLORES-VILLELA & SÁNCHEZ-H., 2003

IUCN Red List - Abronia martindelcampoi - Endangered, EN

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Higher TaxaAnguidae (Gerrhonotinae), Diploglossa, Anguimorpha, Sauria, Squamata (lizards)
Subspecies 
Common NamesS: Escorpión Arboricola de Martin del Campo
E: Martín del Campo’s Arboreal Alligator Lizard 
SynonymAbronia martindelcampoi FLORES-VILLELA & SÁNCHEZ-H. 2003
Abronia deppii — SMITH & TAYLOR 1950: 196
Abronia deppii — TIHEN 1954
Abronia deppi — DAVIS & DIXON 1961
Abronia deppii — GOOD 1988
Abronia martindelcampoi — PALACIOS-AGUILAR 2020 
DistributionMexico (Guerrero)

Type locality: Mexico, Guerrero, Chilpancingo, Omiltemi, Orilla Norte in oak forest at 2250 m elevation.  
Reproductionovovivparous 
TypesHolotype: CNAR (= UNAM = MZFC) 02778 
DiagnosisDiagnosis: This species has (1) supra- auricular scales protuberant and knoblike, with no indication of spines; (2) supranasals not expanded and not in contact at dorsal midline; (3) frontonasal present and usually not in contact with frontal; (4) posterior internasals almost twice as long as anterior internasals(1.6-2.0); (5) no canthals; (6) three anterior temporals; (7) parietal not in contact with median supraoculars;(8) a single occipital; (9) posterior head scales strongly convex and knoblike; (10) anterior supercilliarynot in contact with cantholoreal; (11) posterior suboccular in broad contact with lower primary temporal; (12) preauricular scales notoriously enlarged and in one row; (13) postmentals usually two (only 1 out of 14 had one); (14) posterior infralabials usually elongated; (15) six longitudinal nuchal scales; (16) dorsal scales in 23-27 transverse rows;(17) dorsal scales in 10-12 longitudinal scale rows; (18) ventral scales in 12-14 longitudinal scale rows;and (19) 5-6 brown dorsal markings in adults (Fig. 4). Abronia martindelcampoi differs from A. deppii in having (1) well developed enlarged knob-like posterior head scales (Fig. 2); (2) lower anterior temporal fused with penultimate supralabial;(3) no azygous scale between interparietal and interoccipital; (4) preauricular scales notoriously enlarged; (5) head width in adult males >22 mm and > 18 mm in females; (6) ratio of head width to head length >0.75 in adult males; (7) number of scale whorls on unregenerated tail77-86 (x= 80.7); (8) number of infralabial scales 8-10 (only one had seven); (9) number of longitudinal dorsal scale rows 10-12; (10) dorsal ground color grayish to pale olive green in life (grayish in preservative)with dark brown markings which, if confluent on the vertebral region, may be asymmetrical;(11) dorsum of head pale brown to olive green, usually unblotched, individual scales with fine dark vermiculations, some specimens with large dark area on top of head, more, rarely a few, black individual scales (including both upper anterior temporals); (12) ventral region immaculate cream colored in adults, rarely with faint suggestion of yellowish orange (see below); and (13) upper lips mostly unmarked. It differs from other species of the subgenus Abronia (sensu Campbell and Frost, 1993) in having oblique longitudinal rows of dorsal scales, where fuscolabialis, taeniata, and graminea have parallel longitudinal scale rows and taeniata and graminea do not; in most specimens, one lower temporal contacts the postoccular series and a single occipital, where mixteca and oaxacae have three occipitals and two primary temporals contacting postocular series; has body coloration that is not uniformly green like graminea; has six nuchals,where graminea has four (only juveniles of graminea have bands on the dorsum of the body). 
CommentThe name of Oscar Sánchez-H. is nowhere spelled out in the original description. 
EtymologyNamed after Rafael Martín del Campo y Sánchez, Mexican herpetologist. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Davis, William B.; Dixon, James R. 1961. Reptiles (exclusive of snakes) of the Chilpancingo Region, Mexico. Proc. Biol. Soc. Washington 74: 37-56 - get paper here
  • Flores-Villela, O. & Sánchez-H., O. 2003. A new species of Abronia (Squamata: Anguidae) from the Sierra Madre del Sur of Guerrero, Mexico, with comments on Abronia deppii. Herpetologica 59 (4): 524-531 - get paper here
  • Good, D.A. 1988. Phylogenetic relationships among gerrhonotine lizards; an analysis of external morphology. Univ. California Publ. Zool. 121: 139 pp. - get paper here
  • Langner, Christian 2014. Baumschleichen der Gattung Abronia. Terraria-Elaphe 2014 (1): 14-26 (2013) - get paper here
  • Palacios-Aguilar, Ricardo 2020. UNA LISTA COMENTADA DE LAS ESPECIES DE ANFIBIOS Y REPTILES CON LOCALIDAD TIPO EN GUERRERO, MÉXICO. Rev. Latinoamer. Herp. 3 (2): 43-60
  • Palacios-Aguilar, Ricardo & OSCAR FLORES-VILLELA 2018. An updated checklist of the herpetofauna from Guerrero, Mexico. Zootaxa 4422 (1): 1-24 - get paper here
  • Smith, H.M. & Taylor,E.H. 1950. An annotated checklist and key to the reptiles of Mexico exclusive of the snakes. Bull. US Natl. Mus. 199: 1-253 - get paper here
  • Tihen, J. A. 1954. Gerrhonotine lizards recently added to the American Museum collection, with further revisions of the genus Abronia. American Museum Novitates (1687): 1-26 - get paper here
 
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