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Flat-tailed House Gecko vs. Mediterranean Gecko

Both are introduced house geckos on walls by lights; their records overlap in southern California. A: Strongly flattened, with broad, continuous web-like fringes along the edges in the Flat-tailed House Gecko; round in cross-section, no fringes; rings of big spiny tubercles all along it in the Mediterranean House Gecko. B: Mostly smooth with small granules; any bumps low, flat, sparse, not keeled in the Flat-tailed House Gecko; covered in high, strongly keeled, spiny wart-like bumps in 14 to 16 rows in the Mediterranean House Gecko. C: A web-like flap of skin along the lower side, front leg to hind leg in the Flat-tailed House Gecko; no flap; rounded sides with scattered keeled bumps in the Mediterranean House Gecko.

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Flat-tailed House Gecko

Hemidactylus platyurus

Mediterranean Gecko

Hemidactylus turcicus
Flat-tailed House Gecko vs. Mediterranean House Gecko: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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