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Ahaetulla flavescens (WALL, 1910)

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Higher TaxaColubridae, Ahaetuliinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Yellow whip snake
G: Gelbe Peitschennatter 
SynonymDryophis prasinus flavescens WALL 1910: 834
Dryophis prasinus indicus MELL 1931: 119–219 (by implication)
Dryophis prasina – GÜNTHER 1858: 159 (part)
Tragops prasinus – GÜNTHER 1864: 364
Tragops prasinus – THEOBALD 1876: 191
Dryophis prasinus – BOULENGER 1890: 369
Dryophis prasinus – BOULENGER 1896: 180 (part)
Dryophis prasinus ‘forma typica’ – WALL 1909: 354 (non H. Boie in F. Boie, 1827)
Dryophis prasinus ‘forma typica’ – WALL 1909: 898 (non H. Boie in F. Boie, 1827)
Dryophis prasinus ‘forma typica’ – WALL 1910: 834 (non H. Boie in F. Boie, 1827)
Dryophis prasinus flavescens – WALL 1910: 834 (nec Smith, 1914)
Ahaetulla flavescens — SRIKANTHAN et al. 2022
Ahaetulla flavescens — MALSAWMDAWNGLIANA et al. 2022 
DistributionIndia (Meghalaya, Assam, Arunachal Pradesh, Mizoram), Bhutan
Myanmar (= Burma),

Lectotype locality: Lakimpur, Assam, Northeast India”; 27°13’40.8’’ N, 94°6’28.8’’ E.  
Reproductionovovivparous 
TypesSyntype: NHMUK (= BMNH) 1908.6.23.58, female, designated by Srikanthan et al. 2022. Paralectotype: NHMUK (= BMNH) 1908.6.23.59, female. 
DiagnosisDiagnosis: “A species of Ahaetulla inhabiting Northeast India, defined by the following combination of characters: dorsal scales in 15:15:11–13 smooth rows (vs 13 midbody rows of keeled scales in Proahaetulla Link, 1807); rostral appendage absent (vs present in the A. nasuta group and A. pulverulenta groups); presence of a pair of white ventrolateral stripes throughout the body (vs absence of ventrolateral stripes in the A. pulverulenta group); dorsum usually greenish (vs usually brownish in both sexes in the A. pulverulenta and A. laudankia groups; usually brown in females, in A. anomala (Annandale, 1906), A. perrotetii (Duméril & Bibron, 1854), A. dispar (Günther, 1864) and A. travancorica Mallik, Srikanthan, Pal, D’Souza, Shanker & Ganesh, 2020); crown uniform and unpatterned (vs crown with black markings and reticulations in A. anomala, A. laudankia Deepak, Narayanan, Sarkar, Dutta & Mohapatra, 2019 and A. fasciolata); ventrals 194–200 (vs < 190 in A. nasuta and A. pulverulenta groups); subcaudals 155–168 (vs < 120 in A. perrotetii, A. dispar and A. travancorica); cloacal scale paired (vs entire in A. mycterizans and A. fasciolata); supralabials entire (vs 3rd–4th supralabials horizontally divided in A. fronticincta); nasals not in contact with one another (vs in contact with one another above rostral in A. fronticincta); upper snout surface flat to mildly depressed (vs convex in A. mycterizans); 8.2–10% divergent in ND4 and 6.5–9.5% in Cytb gene from the SE Asian populations of A. prasina sensu lato.” (Srikanthan et al. 2022)


Additional details (597 characters) are available for collaborators and contributors. Please contact us for details. 
CommentSynonymy after Srikanthan et al. 2022 who revalidated it from the synonymy of A. prasina.

Distribution: see map in Srikanthan et al. 2022: .

Behavior: diurnal.

Venomous. Mildly venomous but usually harmless for humans.

Habitat: fully arboreal (Srikanthan et al. 2022). 
EtymologyNamed after the Latin verb ‘flavesco / flavescre’, meaning ‘turning to yellow’ / ‘becoming yellow’, referring to the yellowish colouration of the type specimens in life. 
References
  • Boulenger, G.A. 1896. Catalogue of the snakes in the British Museum, Vol. 3. London (Taylor & Francis), xiv + 727 pp. - get paper here
  • Boulenger, George A. 1890. The Fauna of British India, Including Ceylon and Burma. Reptilia and Batrachia. Taylor & Francis, London, xviii, 541 pp. - get paper here
  • Günther, A. 1858. Catalogue of Colubrine snakes of the British Museum. London, I - XVI, 1 - 281 - get paper here
  • Günther, A. 1864. The Reptiles of British India. London (Taylor & Francis), xxvii + 452 pp. - get paper here
  • Malsawmdawngliana, B. Boruah, N.G. Patel, S. Lalronunga, I. Zosangliana, K. Lalhmangaiha & A. Das 2022. An updated checklist of reptiles from Dampa Tiger Reserve, Mizoram, India, with sixteen new distribution records. Journal of Threatened Taxa 14(10): 21946–21960 - get paper here
  • Mell,R. 1931. List of Chinese snakes. Lingnan Sci. Jour., Canton, 8 [1929]: 199-219.
  • Srikanthan, A. N., Adhikari, O. D., Kumar Mallik, A., Campbell, P. D., Bhushan Bhatt, B., Shanker, K., & Rajagopalan Ganesh, S. 2022. Taxonomic revaluation of the Ahaetulla prasina (H. Boie in F. Boie, 1827) complex from Northeast India: resurrection and redescription of Ahaetulla flavescens (Wall, 1910) (Reptilia: Serpentes: Colubridae). European Journal of Taxonomy, 839: 120–148 - get paper here
  • Theobald,W. 1876. Descriptive catalogue of the reptiles of British India. Thacker, Spink & Co., Calcutta: xiii + 238 pp. - get paper here
  • Wall, FRANK 1909. Notes on snakes collected in Upper Assam. Part II. J. Bombay Nat. Hist. Soc. 19 (4): 825-845 [1910 ?] - get paper here
  • Wall, FRANK 1910. Notes on snakes collected in the Jalpaiguri district. J. Bombay Nat. Hist. Soc. 19 (4): 897-900 [1909] - get paper here
  • Wall,F. 1909. Notes on snakes from the neighbourhood of Darjeeling. J. Bombay nat. Hist. Soc. 19: 337-357 - get paper here
 
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