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Eugongylus unilineatus (DE ROOIJ, 1915)

IUCN Red List - Eugongylus unilineatus - Least Concern, LC

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Higher TaxaScincidae, Eugongylinae (Eugongylini), Scincoidea, Sauria, Squamata (lizards)
Common Names 
SynonymLygosoma unilineatum DE ROOIJ 1915: 208
Lygosoma uniliniatum [sic] — DE JONG 1930: 116
Lygosoma unilineatum — DAAN & HILLENIUS 1966: 134
Eugongylus unilineatus — GREER & SHEA 2000 
DistributionPapua New Guinea

Type locality: Tanah Merah Bay on the north coast of New Guinea.  
TypesLectotype: ZMA.RENA 10912 
DiagnosisDescription: Snout obtuse; lower eyelid scaly; ear-opening oval, smaller than the eye-opening, with five obtusely pointed lobules anteriorly. Nostril in the nasal; no supranasal; frontonasal about twice as broad as long, broadly in contact with the rostral, narrowly with the frontal; latter as long as frontoparietals and interparietal together, in contact with the two anterior supraoculars; four supraoculars, first and second larger than the rest; seven or eight supraciliaries; fronto-parietals as long as the interparietal; parietals in contact; a pair of nuchals and a pair of temporals; fifth upper labial below the eye. Body long; the distance between the tip of the snout and the fore limb is contained one time and a half to one time and two thirds in that between axilla and groin; 30 smooth scales round the middle, dorsals largest; praeanals enlarged. Tail thick, one time and two thirds as long as head and body. Limbs short, widely separated when adpressed; digits short, fourth toe longer than third, with 15 smooth lamellae below (de Rooij 1915: 208).

Coloration: Brown above, with a blackish vertebral line, continued on the tail; on the anterior part of the body a few pale brown transverse bands bordered with black. Lips with blackish oblique bars, continued on the throat, where they form V-shaped figures; the outer line may be extended along each side of the belly; flanks and sides of tail brown-spotted. Lower parts yellowish (de Rooij 1915: 208).

Size: Length of head and body 92 mm; tail (tip reproduced) 110 mm (de Rooij 1915: 208). 
  • Daan, S. & Hillenius,D. 1966. Catalogue of the type specimens of amphibians and reptiles in the Zoological Museum, Amsterdam. Beaufortia 13: 117-144
  • De JONG 1930. Notes on some reptiles from the Dutch East Indies. Treubia, Buitenzorg, 12 (1): 115-119 - get paper here
  • de Rooij, N. de 1915. The Reptiles of the Indo-Australian Archipelago. I. Lacertilia, Chelonia, Emydosauria. Leiden (E. J. Brill), xiv + 384 pp. - get paper here
  • Greer, A.E. & SHEA, G. 2000. A phylogenetically important lygosomine skink resurrected from taxonomic obscurity: Lygosoma unilineatum de Rooij, 1915. Journal of Herpetology 34 (1): 85-91 - get paper here
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