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Varanus dalubhasa WELTON, TRAVERS, SILER & BROWN, 2014

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Higher TaxaVaranidae, Platynota, Varanoidea, Anguimorpha, Sauria, Squamata (lizards)
Subspecies 
Common NamesE: Enteng’s Monitor Lizard 
SynonymVaranus dalubhasa WELTON, TRAVERS, SILER & BROWN 2014
Varanus (Soterosaurus) dalubhasa — BUCKLITSCH et al. 2016: 50 
DistributionPhilippines (Luzon)

Type locality: 18 m above sea level (14.03202, 122.34143; WGS-84), Barangay Madlangdungan, Municipality of Calauag, Quezon Province, Luzon Island, Philippines  
Reproductionoviparous (manual imputation, fide Zimin et al. 2022) 
TypesHolotype: PNM 9796 (formerly University of Kansas Biodiversity Institute = KU 306603; Field No. CWL 521), adult male, collected by Charles W. Linkem and CDS, 08 July 2006.
Paratopotypes. KU 305155 (CDS Field No. 2202), adult male; PNM 9797 (formerly KU 306601; CWL Field No. 440), juvenile; KU 306602 (CWL Field No. 520), adult male. Paratypes. KU 308216 (CDS Field No. 2298), juvenile, collected 22 February 2007, Barangay Buenavista, Municipality of Bato, Catanduanes Province, Catanduanes Island, Philippines; KU 313880 (RMB Field No. 9910), adult male, collected 01 July 2008, Barangay Tulay Na Lupa, Municipality of Labo, Camarines Norte Province, Luzon Island; KU 326702 and 326703 (LJW Field No. 0075, 0077), adult males, salvaged 3 August 2009, Polillo Island (exact locality information unknown). 
DiagnosisDiagnosis: Varanus dalubhasa can be distinguished from congeners by (1) small, dark speckling and variable transverse banding through the gular region (Fig. 3); (2) number of scales around the tail at 1/3 distance from the base; (3) number of gular scales; (4) number of dorsal scales in nuchal region; (5) total number of dorsal scales; (6) number of scales around the neck anterior to the gular fold; and (7) phylogenetic placement sister to V. nuchalis. Additionally, this distinct lineage is biogeographically circumscribed in the Bicol Peninsula faunal sub-region, a distinct geological component of greater Luzon Island which remained inuslar until 3 Ma (Hall 2002).


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Comment 
EtymologyThe specific epithet, dalubhasa, is derived from the Tagolog word “dalubhasa” meaning a person who has authoritative and comprehensive knowledge of a particular area, or a skilled expert in a particular subject. We choose this term in honor of Vicente “Enteng” Yngente of Polillo Island, whose extensive knowledge of natural history and ecology of Philippine reptiles (particularly monitor lizards) has been instrumental to our research and conservation work. 
References
  • Binaday, Jake Wilson B.; Ace Kevin S. Amarga, Ernesto S. Barrameda Jr., and Bobet Jan M. Bonagua 2017. Amphibians and Reptiles in the Vicinity of Bulusan Lake, Bulusan Volcano Natural Park, Sorsogon, Philippines. Philippine Journal of Science 146 (3): 339-351
  • Cruz, C.J.P.D. & Abuid, F. 2017. Varanus dalubhasa (Enteng’s Monitor Lizard) Diet. Herpetological Review 48 (3): 664. - get paper here
  • Gojo-Cruz, Paul Henric P. and Leticia E. Afuang 2018. The Zoogeographic Significance of Caraballo Mountain Range, Luzon Island, Philippines With Focus on the Biogeography of Luzon’s Herpetofauna. Philippine Journal of Science 147 (3): 393-409 - get paper here
  • Gojo-Cruz, Paul Henric P. et al. 2016. Diversity and distribution of herpetofauna in Balesin Island, Polillo, Quezon, Philippines. Sylvatrop, The Technical Journal of Philippine Ecosystems and Natural Resources 25 (1 & 2): 37 - 56 - get paper here
  • Welton, Luke J.; SCOTT L. TRAVERS, CAMERON D. SILER, RAFE M. BROWN 2014. Integrative taxonomy and phylogeny-based species delimitation of Philippine water monitor lizards (Varanus salvator Complex) with descriptions of two new cryptic species. Zootaxa 3881 (3): 201–227 - get paper here
  • Zimin, A., Zimin, S. V., Shine, R., Avila, L., Bauer, A., Böhm, M., Brown, R., Barki, G., de Oliveira Caetano, G. H., Castro Herrera, F., Chapple, D. G., Chirio, L., Colli, G. R., Doan, T. M., Glaw, F., Grismer, L. L., Itescu, Y., Kraus, F., LeBreton 2022. A global analysis of viviparity in squamates highlights its prevalence in cold climates. Global Ecology and Biogeography, 00, 1–16 - get paper here
 
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