Cryptoblepharus egeriae (BOULENGER, 1889)
Can you confirm these amateur observations of Cryptoblepharus egeriae?
|Higher Taxa||Scincidae, Eugongylinae (Eugongylini), Scincoidea, Sauria, Squamata (lizards)|
|Common Names||E: Christmas Island Blue-tailed Shinning-skink|
|Synonym||Ablepharus egeriae BOULENGER 1889: 535|
Ablepharus boutonii egeriae — MERTENS 1931: 169
Ablepharus boutonii egeriae — GIBSON-HILL 1940
Cryptoblepharus egeriae — GREER 1974: 21
Cryptoblepharus egeriae — COGGER 1983: 141
Cryptoblepharus egeriae — COGGER 2000: 728
Cryptoblepharus egeriae — HORNER 2007: 147
Cryptoblepharus egeriae — JAMES et al. 2019
|Distribution||Australia (Christmas Islands)|
Type locality: Christmas Is., Indian Ocean.
|Types||Syntypes: BMNH 1918.104.22.168-88 (3)|
|Diagnosis||The only Cryptoblepharus with interparietal distinct from the large, single frontoparietal shield [...] iridescent blue tail is a feature of both sexes and is brightest in juveniles, the intensity of colour diminishing in large adults. (Cogger et al. 1983)|
Original description: “Snout pointed, rostral not projecting. Eye entirely surrounded with granules; upper eyelid represented by three or four larger scales. Rostral largely in contact with the frontonasal; prefrontals a forming a long suture frontal small, in contact with the first and second supraoculars; five supraoculars, second largest, fifth smallest; seven supraciliaries; interparietal distinct from the very large, single frontoparietal a pair of large nuchals. Ear-opening rather small, oval. Scales smooth or feebly striated, two vertebral rows largest 26 or 28 scales round the middle of the body. Limbs well deve loped, pertadactyle; the hind limb reaches the axilla in the male, the elbow in the female; digits long and slender, smooth inferiorly. Tail once and a half the length of head and body. Bronzy above, with blackish and pale greenish spots a light, dark-edged dorsolateral band; end of tail blue; lower parts greenish white.” (Boulenger 1889)
Measurements of the holotype (apparently, as several specimens are mentioned; from Boulenger 1889):
Total length: 113 mm
Head: 10 mm
Width of head: 6 mm
Body: 35 mm
Fore limb: 17 mm
Hind limb: 21 mm
Tail: 68 mm
Comparisons: Closely allied to A. boutoni, Desj., from which it differs in the distinct interparietal shield. (Boulenger 1889)
|Comment||Cogger et al (1983) noted “common in household gardens and road-side vegetation between Flying Fish Cove and Rocky Point; basks on stone or brick walls, fences, ornamental trees, shrubs and coconut palms; also seen on fallen tree trunks associated with clearings in primary rainforest”.|
Conservation: Extinct in the wild fide Tingley et al. 2019.
|Etymology||Named after HMS Egeria, which visited Christmas Island (1887).|
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