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Anolis eugenegrahami SCHWARTZ, 1978

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Higher TaxaDactyloidae, Iguania, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Black Stream Anole, Eugene's Anole 
SynonymAnolis eugenegrahami SCHWARTZ 1978: 266
Anolis eugenegrahami — SCHWARTZ & HENDERSON 1991: 260
Anolis eugenegrahami — NICHOLSON et al. 2005
Xiphosurus eugenegrahami — NICHOLSON et al. 2012
Xiphosurus eugenegrahami — NICHOLSON et al. 2018 
DistributionHispaniola (Departement du Nord)

Type locality: Roche Parfait, 9.0 km NE Plaisance, 215 m, Département du Nord, Haiti.  
Reproductionoviparous 
TypesHolotype: CM 60515. 
DiagnosisDESCRIPTION: Size moderate (SVL in males to 72 mm, in females to 61 mm); 5-7
(mode 5) rows of loreals; scales between supraorbitals 2-4; 6-10 scales between interparietal and supraorbital semicircles; interparietal very small, equal to about 113-1/4 auricular opening; 4-8 (mode 6) postrostrals; 5-7 (mode 6) postmentals; suboculars separated by 1 row of scales from supralabials; dorsal scales tiny, with about 4 middorsal rows elongate, smooth to very weakly keeled; flank scales granular; ventral scales small, smooth, cycloid, in vague, transverse rows; supra-digital scales multicarinate; tail very compressed, vertically oval in cross section, strongly verticillate, 4-5 middorsals/verticil, 4-5 unicarinate midventrals/verticil near base, lateral caudals unicarinate. Dorsum moderately sexually dichromatic: males black to greenish black dorsally, females black but mottled greenish laterally and with a middorsal series of 4 ovate gray blotches extending onto dorsal side of yellowish green tail; a whitish to very pale yellow subocular semicircle; nape pattern (clearest in females and juveniles, much obscured in males) a dark-edged hollow "collar"; upper surface of head randomly vermiculate black on olive to gray ground; juveniles with green flank stripe, absent in all adults; dewlap relatively small, black to dark gray centrally, edged with whitish to very pale yellow, scales elongate to papillose, slightly larger than throat scales, crowded together and not in well-spaced rows, those on dewlap edge even more crowded, keeled (Schwartz & Henderson 1991: 260). 
CommentSpecies group: Xiphosurus cuvieri species group (fide NICHOLSON et al. 2012).

Abundance: only known from the type locality (Meiri et al. 2017).

Habitat: semi-aquatic (Baeckens et al. 2021) 
EtymologyNamed after Eugene D. Graham Jr., the co-discoverer of the lizard with Thomas Thurmond and Schwartz. 
References
  • Baeckens, S.; M. Temmerman, S. Gorb, C. Neto, M. Whiting & R. Van Damme 2021. Convergent evolution of skin surface microarchitecture and increased skin hydrophobicity in semi-aquatic anole lizards. Journal of Experimental Biology 224(19): jeb242939 ( - get paper here
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - 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 - get paper here
  • Nicholson, K. E., R. E. Glor, J. J. Kolbe, A. Larson, S. B. Hedges, and J. B. Losos 2005. Mainland colonization by island lizards. Journal of Biogeography 32: 929–938 - get paper here
  • NICHOLSON, KIRSTEN E.; BRIAN I. CROTHER, CRAIG GUYER & JAY M. SAVAGE 2012. It is time for a new classification of anoles (Squamata: Dactyloidae). Zootaxa 3477: 1–108 - get paper here
  • NICHOLSON, KIRSTEN E.; BRIAN I. CROTHER, CRAIG GUYER & JAY M. SAVAGE 2018. Translating a clade based classification into one that is valid under the international code of zoological nomenclature: the case of the lizards of the family Dactyloidae (Order Squamata). Zootaxa 4461 (4): 573–586 - get paper here
  • Poe, S. 2013. 1986 Redux: New genera of anoles (Squamata: Dactyloidae) are unwarranted. Zootaxa 3626 (2): 295–299 - get paper here
  • Powell, Robert ; Neland, Jason A 1998. Anolis eugenegrahami. Catalogue of American Amphibians and Reptiles 672: 1-2 - get paper here
  • Schwartz, A. 1978. A new species of aquatic Anolis (Sauria, Iguanidae) from Hispaniola. Annals of the Carnegie Museum 47: 261-279.
  • Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
  • Vences, M. 2009. Lizard Radiations, in: Gillespie Clague, Encyclopedia of islands. University of California Press, pp. 558-563
 
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