Delma fraseri GRAY, 1831
Can you confirm these amateur observations of Delma fraseri?
|Higher Taxa||Pygopodidae, Gekkota, Sauria, Squamata (lizards)|
|Common Names||E: Fraser's Delma|
G: Frasers Flossenfuß
|Synonym||Delma fraseri GRAY 1831: 14|
Delma fraseri — GÜNTHER 1873: 145
Delma fraseri — BOULENGER 1885: 243
Delma fraseri — KLUGE 1974: 86
Delma fraseri fraseri — SHEA 1991
Delma fraseri — KLUGE 1993
Delma fraseri — RÖSLER 1995: 87
Delma fraseri — COGGER 2000: 286
Delma fraseri — WILSON & SWAN 2010
|Distribution||Australia (SW Western Australia)|
Type locality: Australia, restricted to John Forrest National Park, approximately 17 mi E of Perth, W. A. by Kluge (1974).
|Types||Neotype: BMNH 1922.214.171.124; syntype: BMNH 19126.96.36.199. Shea (1991) noted that the putative syntype did not agree fully with the original description, and was not representative of the species to which the name had been applied subsequently. Hence, in the absence of unequivocal evidence that this specimen was one of the types (Gray 1845 and Boulenger 1887 had offered differing opinions as to the number of specimens and their collection data), Shea designated as neotype BMNH 19188.8.131.52, the specimen which had been subsequently illustrated by Gray (1845) and used to apply the name, although this was apparently not one of the original syntypes.|
|Diagnosis||DIAGNOSIS (genus): Delma differs from all other pygopodid genera in possessing the following combination of character states: a) one pair of enlarged scales cover parietal region, b) anteriormost pair of nasal scales almost always meet on midline, c) nostril bordered by more than two scales (D. impar exceptional), d) external auditory meatus large, e) almost always 18 or less midbody scale rows, f) scales smooth, g) preanal pores absent, h) 13 or less caudal scale rows, i) almost always three subcaudal scale rows [from KLUGE 1974: 76]|
Diagnosis (genus): Delma differs from all other pygopodid lizard genera in possessing the following combination of characters: head scales, including the parietals, enlarged and symmetrical; anterior nasal scales nearly always in contact; first pair of lower labials in contact behind mental scale; nostril usually bordered by more than two scales (except in some D. impar); external ear opening large; 20 or fewer midbody scale rows; dorsal and ventral scales smooth; precloacal pores absent; tail about three times as long as body (except in the D. australis species-group). [MARYAN et al. 2015: 316]
|Comment||Subspecies: Delma fraseri is not monophyletic according to JENNINGS et al. (2003) who therefore elevated Delma fraseri petersoni SHEA 1991 to species status.|
Mimicry: This species appears to mimic Pseudonaja textilis (HALL 1905).
Limb morphology: Limbless.
Type species: Delma fraseri GRAY 1831: 14 is the type species of the genus Delma GRAY 1831. Delmae GRAY 1843 appears to be an unjustified emendation of Delma GRAY 1831 and also a nomen nudum, given the lack of any definition.
|Etymology||Named after Charles Fraser (1788-1831), a British botanist and gardener who traveled to Australia (1816) and lived there for many years.|
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