We describe a new species of the Gonocephalus megalepis group and provide new morphological and distribution data for the three other species of the group. The combination of a wide gap between the nuchal and dorsal crests, distinctly heterogenous scales on the flanks, a gular crest, two large tubercular scales ventral to the tympanum, and 97–125 scales around midbody will distinguish the new species from all congeners. The new species occurs above 1100 m on mountains of Sumatra's southern Bukit Barisan Range below 3°S latitude. Head scales of some specimens were infested by a green, filamentous symbiont, which we tentatively identify as an epizoic plant. Gravid females develop crimson stripes on their gular pouch as an apparent social signal.
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19 March 2021
A New Angle-Headed Dragon (Agamidae: Gonocephalus) from Montane Forests of the Southern Bukit Barisan Range of Sumatra
Michael B. Harvey,
Inna Rech,
Awal Riyanto,
Nia Kurniawan,
Eric N. Smith
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Herpetologica
Vol. 77 • No. 1
March 2021
Vol. 77 • No. 1
March 2021
Epizoic plant
Gonocephalus klossi
Gonocephalus lacunosus
Gonocephalus megalepis
Gonocephalus pyrius sp. nov.
Gravid coloration
Indonesia