A revision of the Oligodon taeniatus (Günther, 1861) group (Squamata: Colubridae), with the description of three new species from the Indochinese Region Author David, P. Author Vogel, G. Author van Rooijen, J. text Zootaxa 2008 2008-12-17 1965 1 49 journal article 1175­5334 Key to the Oligodon taeniatus -group These species are better identified on the basis of the number of dorsal rows, then by their dorsal and tail pattern: 1 19 DSR at neck and at midbody ..................................................................................... Oligodon taeniatus - 17 DSR at neck and at midbody..................................................................................................................2 2 Dorsal pattern with 10–14 dark brown or black butterfly-like blotches on the upper surface of body + 2–3 on the tail; no vertebral stripe ........................................................................................... Oligodon barroni - Dorsal pattern striped, without large blotches on the body.........................................................................3 3 At least 175 ventrals in females; vertebral and black paravertebral stripes broad and very conspicuous; venter largely dark ........................................................................................... Oligodon moricei spec. nov. - Not more than 165 ventrals in both sexes; paravertebral stripes weak; venter pale with well defined subrectangular blotches.....................................................................................................................................4 4 Two conspicuous, large blotches on the tail .................................................................... Oligodon mouhoti - No, or small blotches on the tail..................................................................................................................5 5 A narrow, faint vertebral stripe edged with two dark longitudinal paravertebral stripes; a poorly distinct dorsolateral stripe; 14–15 maxillary teeth; presubocular present; 8 supralabials; ratio TaL/TL in males at least 0.20 ............................................................................................ Oligodon pseudotaeniatus spec. nov. - A broad vertebral stripe, orange, rusty red or pale yellow, edged with faint paravertebral stripes; dorsolateral stripes reduced to a line of dots; 12–14 maxillary teeth; no presubocular; 7 (very rarely 8) supralabials; ratio TaL/TL in males below 0.175 ............................................................. Oligodon deuvei spec. nov.