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Pachydactylus labialis FITZSIMONS 1938

Pachydactylus labialis
Männchen von Pachydactylus labialis. © M. Barts.

Pachydactylus labialis
Weibchen von Pachydactylus labialis von Koingaas, Namaqualand.
©
J. Marais.

Pachydactylus labialis
Weibchen von Pachydactylus labialis. © M. Barts.

Pachydactylus labialis
Männchen von Pachydactylus labialis. © T. Ulber.

Pachydactylus labialis
Weibchen von Pachydactylus labialis. © F. Colacicco.

Pachydactylus labialis
Lebensraum von Pachydactylus labialis. © M. Barts.

 

Originalbeschreibung/Original description

FITZSIMONS, V.F.M. (1938): Transvaal Museum Expedition to South- West Africa and Little Namaqualand, May to August 1937. Reptiles and Amphibians. — Ann. Transvaal Mus., 19 (2): 168, Fig. 7 — Terra typica: Steinkopf, Little Namaqualand, 23 August 1937

Four specimens were collected: T.M. 18052-18055, at Steinkopf, Little Namaqualand, 23 August 1937. TYPE. T.M. 18055.

DESCRIPTION. Head small, not or but very slightly broader than neck (distinctly broader in capensis), about 1 2/5 times as long as broad (usually not more than 1 1/3 in capensis); snout short (distinctly shorter than in capensis), about 1 1/2 times diameter of eye and 1 1/5 times distance from eye to ear-opening; nostril pierced between three nasal scales, well separated from rostral and first upper labial; nasorostrals well separated by a moderately large granule (usually in contact in capensis); mental not more than 1 1/2 times as long as basal breadth, subequal to or a little narrower at base than adjoining labials, not narrowed or narrowed but slightly behind; upper labials 5-7, with fifth below middle of eye (usually sixth or seventh below middle of eye in capensis); lower labials 5-6; labials all distinctly deeper than in capensis; scales on snout enlarged, especially on canthal region, slightly convex and faintly keeled (in capensis canthal scales not so distinctly enlarged); on interorbital region and occiput scales minutely granular intermixed with rounded, conical, keeled tubercles, smaller than enlarged scales on snout; over back tubercles large, with strong simple keels or trihedral, in more or less regular longitudinal series and evenly spaced, two or three granules apart; on tibia tubercles large and trihedral; below, scales on chin and throat minutely granular, enlarging over chest and belly, where they are smooth, flat, subcircular and subimbricate (in capensis usually subhexagonal and imbricate). Head and body not or but feebly depressed; limbs and digits short and stout; distal dilatation not or but very slightly broader than proximal portion of digit, with five transverse adhesive lamellae under each digit, the most proximal being deeply nicked in the middle and often completely divided; median row of subdigital scales not or but feebly enlarged; fingers and toes above, each with a moderately large single median scale distal to the large nail-like scale (in capensis two scales terminally, and a very small median scale present or absent). Tail cylindrical, covered above with small imbricate irregular-sized scales and regular transverse series of six enlarged, pointed, keeled scales (three scale rows apart); below, scales larger than above, imbricate, somewhat pointed behind, no median row of transversely enlarged scales; two enlarged, somewhat flattened, sharp-edged scales, one behind the other, on either side of base of tail near vent.

COLOUR. Above, grey to greyish brown with dark markings arranged irregularly, in transverse series or in thin longitudinal stripes over back; a dark band on side of head from second upper labial through eye and over temporal region above ear and then curving inwards round occiput, but not quite meeting its fellow behind; a dark streak from nostril to just above eye; labials largely infused with dark brown; below, creamy white to greyish. Tail more or less distinctly barred with dark brown to blackish; reproduced tails spotted.

DIMENSIONS. Type, T.M. 18055, H. and B. 44, tail (partly reproduced) 38, length head 10,5, breadth head 7,5, forelimb 11, hindlimb 15 mm.

FIELD NOTES. Taken under loose stones lying on the ground on the slopes of and along the bottom of a valley among the hills.