Tantilla jani (GÜNTHER, 1895)
Can you confirm these amateur observations of Tantilla jani?
|Higher Taxa||Colubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Common Names||E: Jan's Centipede Snake|
|Synonym||Homalocranium jani GÜNTHER 1895: 148|
Homalocranium fuscum BOULENGER 1896
Tantilla fusca SLEVIN 1939
Tantilla jani — SMITH 1942: 36
Tantilla janni — BELTRÁN 1953
Tantilla jani — PETERS & OREJAS-MIRANDA 1970: 295
Tantilla cuesta WILSON 1982 (fide CAMPBELL 1998)
Tantilla jani — LINER 1994
Tantilla jani — WILSON 1999
Tantilla jani — WALLACH et al. 2014: 702
Tantilla jani — HEIMES 2016: 181
cuesta: Guatemala (San Marcos); Type locality: Finca San
Julia, 1.5 km E San Rafael Pie de la Cuesta, elevation 1050 m, Depto. San Marcos, Guatemala)
|Types||Lectotype: BMNH 19184.108.40.206, conspecific with the holotype of T. cuesta.|
Holotype: MVZ 146762 (adult? female) [cuesta]
|Diagnosis||Coloration: Body light brown dorsally and dark brown laterally; pale mid-dorsal stripe absent or reduced to a series of small spots on vertebral scale row; pale lateral stripe narrow, occupying adjacent edges of scale rows 3 and 4, extending length of body; lateral edges of ventrals with brown spotting; pale nuchal collar reduced to pair of spots; |
Tantilla jani has narrow beige lateral stripes confined to the adjacent thirds of scale rows 3 and 4. The lateral stripes extend the length of the body to about the leVel of the vent or the proximal portion of the tail; they are bordered above by dark brown pigment on the upper portion of scale row 4. The dorsal area between the stripes is light brown, and the ventrolateral area below the stripes is dark brown. A pale middorsal stripe is absent or reduced to a series ofsmall spots on the vertebral scale row. Brown pigmentation on the first (paraventral) scale tow gradually decreases posteriorly. The nuchal collar is reduced to a pair of pale spots. The top of the head is medium brown, grading to tan on the snout. Pale pre- and postocular spots are present. The venter is whitish in preservative (unknown in life), the lateral edges of the ventrals have some brown spotting (Heimes 2016: 181).
Scalation: no loreal; dorsals in 15 rows; ventrals less than 150, 7 supralabials, 6 infralabials, 1 preocular, 2 post-oculars, 1+1 temporals, 143-147 ventrals and 44-47 divided sub-caudals (Heimes 2016: 181).
|Comment||Distribution: not listed for Mexico by WILSON & MATA-SILVA 2015 who state that “Tantilla jani Günther, 1895, is a name correctly applied to a Guatemalan/Mexican member of the genus (Campbell, 1998a), leaving the taxon to which this name had been applied nameless; Campbell (1998a), however, provided the name Tantilla vulcani for this snake”. Heimes 2016 listed T. jani for Mexico but by citing Campbell 1998 concedes that all Mexican records are questionable. There is no map for T. jani in Heimes 2016 either.|
Similar species: Tantilla vulcani
Synonymy: the paralectotype (from Nicaragua) was assigned to T. alticola by Wilson (1982).
|Etymology||Named after Giorgio Jan (1791-1866), Austrian-born botanist and professor in Parma and Milan, Italy. Not listed in Liner 2007.|
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