Arthrosaura, Boulenger, 1885

Myers, C. W. & Donnelly, M. A., 2008, The Summit Herpetofauna Of Auyantepui, Venezuela: Report From The Robert G. Goelet American Museum-Terramar Expedition, Bulletin of the American Museum of Natural History 2008 (308), pp. 1-147 : 97

KEY TO THE NAMED SPECIES OF ARTHROSAURA

1. Mainly lowland species occurring in Amazonia and/or in eastern Guayana region (French Guiana to Guyana)................ 2

– Upland and highland species in Venezuela and Guyana..................... 4

2. Supraoculars four; a broad pale middorsal stripe from snout to end of tail; north and south of lower Amazon, from Suriname to Brazil; possibly disjunct in upper Amazon.......................... A. kockii

– Supraoculars three; no broad pale middorsal stripe.......................... 3

3. Seven supralabials; flanks usually conspicuously pale spotted; no pale dorsolateral line; to about 70 mm SVL; throughout Amazonian Basin and north to Guyana... A. reticulata

– Six supralabials; flanks not conspicuously pale spotted; a pale dorsolateral line at least anteriorly;, 50 mm SVL; scattered localities of 100–630 m elevation in northern French Guiana and Suriname, and one site at 1400 m in extreme eastern Venezuela.. A. versteegii

4. Supraoculars four; 2–4 pale lines on body.. 5

– Supraoculars three; dorsum with or without pale dorsolateral lines.............. 6

5. Dorsum with four pale narrow lines ; parietals and interparietal with 1–2 longitudinal keels; temporals small; Los Testigos massif, Bolívar ................... A. testigensis *

– Dorsum with pale dorsolateral lines and a lateral line of pale spots; head scales smooth; temporals large; Mt. Ayanganna, Guyana.......................... A. guianensis