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Ctenotus rimacola HORNER & FISHER, 1998

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Higher TaxaScincidae, Sphenomorphinae (Sphenomorphini), Scincoidea, Sauria, Squamata (lizards)
SubspeciesCtenotus rimacolus camptris HORNER & FISHER 1998
Ctenotus rimacolus rimacolus HORNER & FISHER 1998 
Common NamesE: Crack-dwelling Ctenotus 
SynonymCtenotus rimacola HORNER & FISHER 1998
Ctenotus rimacolus — COGGER 2000: 752
Ctenotus rimacola — WILSON & SWAN 2010: 212
Ctenotus rimacola — PRATES et al. 2023

Ctenotus rimacolus camptris HORNER & FISHER 1998
Ctenotus rimacolus camptris — WILSON & SWAN 2013: 234 
DistributionAustralia (Ord-Victoria region of northwestern Australia)

rimacolus: Victoria River district; Type locality: Lindermans Bore, Limbunya Station, 17°33'S, 130 05'E, Northern Territory, Australia.

camptris: Ord and Keep Rivers; Type locality: 4 km south-west of Point Spring Yard, 15°25'S, 128°51'E, Western Australia, Australia.  
Reproductionoviparous 
TypesHolotype: NTM R.22905, adult male; paratypes: NTM
Holotype: WAM R.126064, adult male [camptris] 
DiagnosisDiagnosis (n=10): A moderately large and robust member of the C. lesueurii species-group, C. r. rimacola ssp. nov. differs from other members of this species-group by having prefrontals usually in contact, seven supralabials, prominent pale dorsolateral stripe, distinct dark, pale edged vertebral stripe and a maximum snout-vent length of 94 mm. It is distinguished from C. r. camptris ssp. nov. in having an grey-brown ground colour and more intense patterning, with a prominent dark vertebral stripe as wide as paravertebral scales, distinct dark laterodorsal and pale dorsolateral stripes and longitudinally striped pattern on hindlimbs. (Horner & Fisher 1998)


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CommentLimb morphology: 5 digits, 5 toes (Singhal et al. 2018, Cogger 2014)

Distribution: see map in Prates et al. 2023: 5 (Fig. 2) 
EtymologyThe epithet rimacola is a combination of the Latin rima (cleft or fissure) and cola (dwelling in) and refers to the distinctive, deeply cracking clay soils which this species inhabits.

C. r. camptris was named after the Latin campus (field or plain) and -tris (where or place for) and also refers to the black-soil plains which this subspecies inhabits. 
References
  • Cogger, H. G. 2014. Reptiles and Amphibians of Australia, 7th ed. CSIRO Publishing, xxx + 1033 pp. - get paper here
  • Cogger, H.G. 2000. Reptiles and Amphibians of Australia, 6th ed. Ralph Curtis Publishing, Sanibel Island, 808 pp.
  • Couper, P., Covacevich, J., Amey, A. & Baker, A. 2006. The genera of skinks (Family Scincidae) of Australia and its island territories: diversity, distribution and identification. in: Merrick, J.R., Archer, M., Hickey, G.M. & Lee, M.S.Y. (eds.). Evolution and Zoogeography of Australasian Vertebrates. Australian Scientific Publishing, Sydney, pp. 367-384
  • Horner, P. & A. FISHER 1998. Ctenotus rimacola sp. nov. (Scincidae), a new species of lizard with two allopatric subspecies, from the Ord-Victoria region of northwestern Australia. Rec. West. Austr. Mus. 19 (2): 187-200. - get paper here
  • Jolly, C., Schembri, B., & Macdonald, S. 2023. Field Guide to the Reptiles of the Northern Territory. CSIRO Publishing, Melbourne - get paper here
  • Prates, I., Hutchinson, M. N., Singhal, S., Moritz, C., & Rabosky, D. L. 2023. Notes from the taxonomic disaster zone: Evolutionary drivers of intractable species boundaries in an Australian lizard clade (Scincidae: Ctenotus). Molecular Ecology, 33, e17074 - get paper here
  • Singhal, Sonal; Huateng Huang, Maggie R. Grundler, María R. Marchán-Rivadeneira, Iris Holmes, Pascal O. Title, Stephen C. Donnellan, and Daniel L. Rabosky 2018. Does Population Structure Predict the Rate of Speciation? A Comparative Test across Australia’s Most Diverse Vertebrate Radiation. The American Naturalist - get paper here
  • Wilson, S. & Swan, G. 2010. A complete guide to reptiles of Australia, 3rd ed. Chatswood: New Holland, 558 pp.
 
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