Tantilla stenigrammi MCCRANIE & SMITH, 2017
Can you confirm these amateur observations of Tantilla stenigrammi?
|Higher Taxa||Colubridae, Colubrinae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)|
|Synonym||Tantilla stenigrammi MCCRANIE & SMITH 2017|
Tantilla taeniata — MCCRANIE 2011: 227, in part
Tantilla taeniata — MCCRANIE 2011: 44, in part
Tantilla stenigrammi — ANTÚNEZ-FONSECA et al. 2020
Type locality: Cuaca (15°23’01.75’’N, 86°12’41.22’’W;. datum 1⁄4 WGS84 in all cases), 895 m elevation, department of Olancho, Honduras
|Types||Holotype: UTA R- 52591 (University of Texas at Arlington, Field No. ENS 10897), a subadult female, collected 3 February 2005 by Eric N Smith, Jorge A. Ferrari- Castro, Jorge Murillo, C. Chavez, Arturo Sosa, and John H. Malone. Paratype (n 1⁄4 1).—UNAH 3032, an adult male with an incomplete head and tail, from about 20 km E of Gualaco, Olancho, Honduras, at beginning of a foot trail (158020N, 858540W) leading to Cerro La Picucha, 1180 m elevation.|
|Diagnosis||Diagnosis. Tantilla stenigrammi is defined, following Campbell (1998), by the following combination of characters: (1) middorsal stripe Warm Buff to Pale Horn Color (Color 118, 92), extending length of body and most of tail, confined to vertebral row on at least anterior half of body, extending onto adjacent edges of paravertebral scale rows posteriorly on body; (2) Buff-Yellow (Color 53) lateral stripe occupying adjacent thirds of scale rows 3 and 4; (3) ventrolateral area similar in pale color to that of lateral stripe; (4) lower half to two-thirds of scale row 1 colored similarly to that of ventrals; (5) lateral edges of ventrals immaculate white (in preservative), no dark spots present; (6) ventral and subcaudal surfaces Pearl Gray (in life; Color 81) to white (in preservative); (7) female with 159 ventrals, male with 164 ventrals; (8) tail incomplete in both.|
Tantilla stenigrammi can be distinguished from T. taeniata by having the pale middorsal stripe confined to the vertebral row on at least anterior half of body and in having pale gray ventral surfaces in life (vs. pale middorsal stripe also extending onto paravertebral rows throughout its length and ventral surfaces pale purplish pink grading to darker salmon color on posterior two-thirds of body and under tail in T. taeniata). It further differs from T. taeniata in having more ventral scales (164 vs. 141–152 in males, and 159 vs. 150 in females).
Tantilla stenigrammi differs from T. psittaca and T. tritaeniata by having the middorsal pale stripe confined to the vertebral row on at least anterior half of body (vs. middorsal stripe involving all of vertebral scale. and adjacent third to half of paravertebral scale rows throughout its length in those two species); further from T psittaca by having pale gray ventral and subcaudal surfaces in life and white in preservative (vs. those surfaces being pink and grading to red in life and pale brown medially and pale brown with pinkish tinge on posterior third of body and under tail in preservative), and further from T. tritaeniata in having a complete nuchal collar and the pale lateral stripe covering adjacent thirds of scale rows 3 and 4 (vs. nuchal collar divided and pale lateral stripe including adjacent halves to two-thirds of scale rows 3 and 4). Tantilla stenigrammi differs from T. impensa in having 159 ventrals in the female, the pale middorsal stripe extending onto adjacent edges of paravertebral scale rows only posteriorly on the body, the pale brown lateral stripe covering adjacent thirds of scale rows 3 and 4, and by having a pale brown crossbar on the internasals that is bordered on the posterior edge by a dark brown cross-line (vs. 164–172 ventrals in females, the pale middorsal stripe confined to vertebral row throughout its length, pale lateral stripe including adjacent halves to two-thirds of scale rows 3 and 4, and those head surfaces same ground color as remainder of head). Tantilla stenigrammi differs from T. olympia in having complete middorsal and lateral pale stripes, in having a pale internasal crossbar, and having distinct pale large spots on the lateral surface of the head (vs. those body pale stripes reduced to dashes and spots, respectively, no internasal crossbar, and those lateral pale areas on head absent to indistinct).
|Comment||Illustration: A photograph of the holotype (UTA R-52591) of Tantilla stenigrammi was previously published in McCranie et al. (2006; as T. taeniata).|
Habitat: pine–oak forest, transition zone between pine– oak forest and broadleaf rainforest (Premontane Wet Forest)
|Etymology||The specific epithet, stenigrammi, is a Greek substantive used as an adjective and meaning narrow-lined, derived from the Greek adjective stenos (narrow) and the Greek noun grammi (line), in allusion to the narrow middorsal stripe that is characteristic of the species.|
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