in Khao Sok National Park, Thailand
Draco blanfordii, commonly known as Blanford's flying dragon, Blandford’s flying lizard, or Blanford's gliding lizard, is a species of "flying" lizard in the family Agamidae. The species is endemic to Asia, and is capable of gliding from tree to tree.
D. blanfordii is similar to D. indochinensis. However, while the dewlap of D. indochinensis is widest at its base, decreases in width over its entire length, and terminates in a sharp point, in contrast, the dewlap of D. blanfordii is distally expanded with a basal constriction, and terminates in a rounded distal edge. D. indochinensis also differs from D. blanfordii in the presence (in both sexes) of a thick, black transverse band that extends across the posterior gular region from one throat lappet to the other, and in the presence of dark radial bands on the dorsal surfaces of the patagia in both sexes rather than in females only.
The head of D. blanfordii is small, and the snout is constricted, slightly longer than the diameter of the orbit. The nostril is directed upwards, perfectly vertical. The tympanum is naked, smaller than the eye-opening. The upper head-scales are unequal, keeled, with a prominent tubercle at the posterior corner of the orbit. There are nine upper labials. The male's gular appendage is longer than the head, very thin, covered with large scales. The male has a slight nuchal fold. The dorsal scales are equal, smooth or very feebly keeled, not larger than the ventrals. There is a series of widely separated enlarged keeled scales along the side of the back. The fore limb stretched forwards extends considerably beyond the tip of the snout; the adpressed hind limb nearly reaches the axilla. Colouration is grey-brown above, with small dark spots. The wing-membranes which above are marbled with dark brown, with lighter spots and lines, are beneath immaculate. The throat is unspotted, greenish, pale scarlet beneath the lateral wattles. Snout-to-vent length (SVL) is 4.75 in (12.1 cm), and the tail is 9 in (23 cm) long. D. blanfordii is the largest species of the genus.
- Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. (Draco blanfordii, p. 27).
- Boulenger GA (1890). The Fauna of British India, Including Ceylon and Burma. Reptilia and Batrachia. London: Secretary of State for India in Council. (Taylor and Francis, printers). xviii + 541 p. (Draco blanfordii, p. 112-113).
- Barts M, Wilms T (2003). "Die Agamen der Welt ". Draco 4 (14): 4-23. (in German).
- Blanford WT (1878). "Notes on some Reptilia from the Himalayas and Burma". J. Asiatic Soc. Bengal 47 (2): 125-131.
- Boulenger GA (1885). Catalogue of the Lizards in the British Museum (Natural History). Second Edition. Volume I. Geckonidæ, Eublepharidæ, Uroplatidæ, Pygopodidæ, Agamidæ. London: Trustees of the British Museum (Natural History). (Taylor and Francis, printers). xii + 436 pp. + Plates I- XXXII. (Draco blanfordii, new species, pp. 267–268 + Plate XX, Figure 7).
- Das I (2002). A Photographic Guide to Snakes and other Reptiles of India. Sanibel Island, Florida: Ralph Curtis Books. 144 pp. ISBN 0-88359-056-5. ("Draco blanfordi [sic]", p. 75).
- McGuire, Jimmy A.; Heang, Kiew Bong (2001). "Phylogenetic systematics of Southeast Asian flying lizards (Iguania: Agamidae: Draco) as inferred from mitochondrial DNA sequence data". Biological Journal of the Linnean Society 72: 203-229.
- Smith MA (1935). The Fauna of British India, Including Ceylon and Burma. Vol. II.—Sauria. London: Secretary of State for India in Council. (Taylor and Francis, printers). xiii + 440 pp. + Plate I + 2 maps. ("Draco blanfordi [sic]", pp. 141–142).