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Diporiphora gracilis MELVILLE, DATE, HORNER & DOUGHTY, 2019

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Higher TaxaAgamidae (Amphibolurinae), Sauria, Iguania, Squamata (lizards)
Common NamesE: Gracile two-lined dragon 
SynonymDiporiphora gracilis MELVILLE, DATE, HORNER & DOUGHTY 2019: 46 
DistributionAustralia (Western Australia)

Type locality: Fairfield-Leopold Downs Road, south of Gibb River Road, WA (17° 29' 37.0" S, 125° 2' 17.7" E).  
TypesHolotype. WAM R177291 (formerly NMV D75540) (adult male), Collected by P. Oliver on 2 November 2013.
Paratypes. NMV D75541 (adult females), as for holotype; NMV D73901 (adult male), as for holotype; WAM R163503 (female) and WAM R163504 (male), Mornington Station, WA (17° 30' 23" S, 126° 02' 07" E); WAM R177952 (formerly NMV D75542) (adult female), as for holotype. 
DiagnosisDiagnosis. Body size moderately long (to 61 mm SVL) with elongate and gracile body shape and very long tail (to 3 × SVL). Gular fold absent, post-auricular and scapular folds weak. Granular scales in axilla, extending over arm to scapular fold. Homogeneous dorsal scales between pale dorsolateral lines that usually lack raised scales in outer row, providing little demarcation between dorsal and lateral scales. Pre-cloacal pores 4; femoral pores 0 (Melville et al. 2019: 46).

Comparison with other species. The distribution of D. gracilis sp. nov. overlaps numerous other Diporiphora species. The distribution of D. pindan overlaps with D. gracilis sp. nov. but they appear to occupy different habitats (D. gracilis sp. nov. in grasslands on floodplains; D. pindan in shrubs and spinifex). Diporiphora pindan can be distinguished from D. gracilis sp. nov., with the latter lacking a well-defined white stripe between eye and ear, having strongly keeled dorsal scales where keels form longitudinal ridges running along torso and having a very long tail in proportion to body size. Differs from D. magna in lacking strong post-auricular and scapular folds, and having a more gracile habitus. Differs from D. lalliae in lacking gular fold and possessing granular scales in axilla. Differs from D. (Melville et al. 2019: 48). 
CommentDistribution: for a map see Melville et al. 2019: 41 (Fig. 14). 
EtymologyNamed for the gracile body shape, with noticeably long and slender body, limbs and tail. Used as a noun in apposition. 
  • Ellis, Ryan J. 2019. An annotated type catalogue of the dragon lizards (Reptilia: Squamata: Agamidae) in the collection of the Western Australian Museum. Records of the Western Australian Museum 34: 115–132 - get paper here
  • Melville, J., Smith Date, K.L., Horner, P., and Doughty, P. 2019. Taxonomic revision of dragon lizards in the genus Diporiphora (Reptilia: Agamidae) from the Australian monsoonal tropics. Memoirs of Museum Victoria 78: 23–55 - get paper here
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