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Sinomicrurus iwasakii (MAKI, 1935)

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Higher TaxaElapidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Iwasaki's temperate Asian coralsnake
G: Iwasakis Korallenotter 
SynonymCalliophis iwasakii MAKI 1935
Micrurus macclellandi iwasakii — WELCH 1994: 85
Calliophis macclellandi iwasakii — STANISZEWSKI 2003
Sinomicrurus macclellandi iwasakii — GORIS & MAEDA 2004: 247
Sinomicrurus macclellandi iwasakii — NGUYEN et al. 2009
Sinomicrurus iwasakii — NCBI 2021
Sinomicrurus iwasakii — SMART et al. 2021 
DistributionJapan (Ryukyu Islands: Ishigaki)

Type locality: Banna-san, Ishigakijima  
Reproductionoviparous 
TypesHolotype: unknown fide V. Wallach, pers. comm. 
DiagnosisDiagnosis: Based on nine individuals, six examined by us
(five males, one female) and variation recorded from literature when sex was given for three well documented specimens, with photos or good illustrations (one male, two females) (See Appendix 2); comparatively small species of Sinomicrurus (1) SVL 233–330 mm (mean 272.0 mm) in males, 260–305 mm in females (mean 280.0 mm); (2) temporals 1+2; (3) no teeth behind fangs on maxilla, palatine teeth 8, pterygoid teeth 4–6, dentary teeth 10–12; (4) supralabials 7/7; (5) infralabials 6/6; (6) postoculars 2; (7) nuchal-band width 3.5–4 scales in males, three scales in female; (8) black body bands 26–36 in males, 29–37 in females; (9) two small contralateral black spots, occupying less than one full scale, sometimes present in-between black bands on dorsum; (10) ventrals 210–233 in males, 223–230 in females; (11) anal divided; (12) paired subcaudals 35–40 in males, 32–37 in females; (13) tail bands 4–6 in males, 4–6 in females (additional literature records); (14) relative tail length (TL/SVL) 0.11–0.14 (mean 0.13) in males, 0.09–0.12 (mean 0.11) in females (Smart et al. 2021).


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CommentVenomous!

Conservation: Calliophis macclellandi iwasakii is classified as “near threatened” in Japan (Ota 2000).

Distribution: for a map of localities see Smart et al. 2021: 2231 (Fig. 7).

Synonymy: for a more extensive synonymy see Smart et al. 2021: 2233. 
EtymologyProbably named after Takuji Iwasaki (1869-1937), the chief meteorologist at Ishigaki-jima, after whom Maki also named Pareas iwasaki. 
References
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