KEY TO SPECIES IN ORNITHUROSCINCUS 1. (a) Light yellow-white patch on occiput absent ................................................................................................2 (b) Light yellow-white patch on occiput present............................................................ O. noctua –moth skink 2. (a) Frontoparietals fused....................................................................................................................................3 (b) Frontoparietals unfused ...............................................................................................................................4 3. (a) Adult SVL 50 mm; paravertebrals> 70; dark brown to black dorsal coloration with golden striations .......................................................................................... O. shearmani — Shearman’s smooth-eared skink 4. (a) Dorsolateral stripes absent ..........................................................................................................................5 (b) Dorsolateral stripes present.........................................................................................................................7 5. (a) Parietal eye spot present ..............................................................................................................................6 (b) Parietal eye spot absent.................................................................... O. viridis — green smooth-eared skink 6. (a) Dark vertebral stripe absent from dorsum.......................... O. albodorsalis — white-backed slender skink (b) Dark vertebral stripe present on dorsum ............................... O. nototaenia — Setekwa slender tree skink 7. (a) Thick dorsolateral stripes (> 1 scale wide) ..................................................................................................8 (b) Thin dorsolateral stripes (1 scale wide) .......................................................................................................9 8. (a) Mid-dorsal field dark olive grey spotted with brown; midbody scale rows 30 .................................................................. ...................................................................................................... O. inornatus — plain smooth-eared skink 9. (a) Parallel fragmented white vertical stripes on flank; venter blue (lime green in life) ......................... ........................................................................... O. pterophilus — Mount Victoria smooth-eared skink (b) Scattered white specks on flank; venter pearl white (lemon yellow or white in life).................................. .......................................................................................... O. sabini — Mount Simpson smooth-eared skink

Published as part of Slavenko, Alex, Tamar, Karin, Tallowin, Oliver J S, Kraus, Fred, Allison, Allen, Carranza, Salvador & Meiri, Shai, 2022, Revision of the montane New Guinean skink genus Lobulia (Squamata: Scincidae), with the description of four new genera and nine new species, pp. 220-278 in Zoological Journal of the Linnean Society 195 (1) on pages 273-274, DOI: 10.1093/zoolinnean/zlab052, http://zenodo.org/record/6530695