Thursday, January 28, 2021

[Herpetology • 2020] Tantilla lydia • A New Species of Tantilla of the taeniata group (Squamata: Colubridae) from Refugio de Vida Silvestre Barras de Cuero y Salado in Caribbean coastal Honduras


Tantilla lydia 
Antúnez-Fonseca, Castro, España, Townsend & Wilson, 2020


Abstract
A new species of Tantilla is described from the Refugio de Vida Silvestre Barras de Cuero y Salado (RVSBCS), on the Caribbean coast of Honduras. Assigned to the Tantilla taeniata group, this species differs from others in this group in color pattern, numbers of scales, measurements, and habitat. An incomplete pale nuchal collar and a pale mediodorsal stripe extending to the proximal edge of the paravertebral rows on the anterior third of the body are present. The lateral extension of the head cap does not completely separate the postocular pale spot from the pale nuchal collar. A pale lateral stripe is present on the adjacent halves of dorsal scale rows 3 and 4. The ventrolateral ground color is much darker than that of the dorsolateral ground color. The ventral + subcaudal number of 244 is the highest figure for the males of species in the group. The RVSBCS is an important coastal protected area in Mesoamerica, due to its signifcant coastal diversity, including iconic species, in addition to harboring this centipede snake.

 Keywords. Centipede snake, Departamento de Atlántida, protected area, Reptilia, Río Salado, taxonomy 

Fig. 1. Dorsolateral view of the holotype of Tantilla lydia sp. nov. (UVS-V 1189) in life.
Photo by Cristopher Antúnez-Fonseca.

Fig. 2. Dorsal (A), lateral (B), and ventral (C) views of the head and nape of the holotype of Tantilla lydia sp. nov. (UVS-V 1189).
Photos by Cristopher Antúnez-Fonseca.

Tantilla lydia sp. nov. 
Suggested common name. Lydia’s Little Snake.

Diagnosis. Tantilla lydia sp. nov. is a member of the Tantilla taeniata species group, but distinguished from all other congeners by possessing the following combination of characteristics: (1) pale middorsal stripe dark-edged, occupying middorsal scale row and adjacent third of paravertebral rows on anterior third of body, reducing to median half of vertebral row on remainder of body, beginning approximately on tenth middorsal scale past parietals, posterior to more or less circular pale spot just posterior to dark nape band located behind pale nuchal collar; (2) pale nuchal collar incomplete dorsally, divided by dark coloration on vertebral scales and connecting to dark posterior border of dark head cap and dark nape band; (3) lateral extension of dark head cap incomplete, not completely separating postocular pale spot from pale nuchal band; (4) subocular dark spot present, not extending to lip; (5) ventrolateral region of body a much darker shade of brown than dorsolateral region; (6) pale lateral stripe well defned, dark edged, located on adjacent halves of dorsal scales 3 and 4; (7) paraventral scale completely pale on anterior portion, gradually darkening dorsally, until becoming completely dark at the beginning of tail; (8) postnasal and preocular narrowly separated; (9) 169 ventrals, 75 subcaudals, and 244 ventrals + subcaudals in the single male holotype. 
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Etymology. We are privileged to name this new species of snake in honor of Dr. Lydia Allison Fucsko who resides in Melbourne, Australia, and is an amphibian conservationist and environmental activist. As an internationally published photographer, she has taken countless pictures of amphibians, including photo galleries of mostly southeastern Australian frogs. Dr. Fucsko has a Bachelor of Arts in Humanities from La Trobe University (Bundoora, Victoria, Australia), and a Diploma in Education from The University of Melbourne (Parkville, Victoria, Australia). She has postgraduate diplomas in computer education and in vocational education and training from The University of Melbourne (Parkville). Additionally, Dr. Fucsko holds a Master’s Degree in Counseling from Monash University (Clayton, Victoria, Australia). She received her Ph.D. on environmental education, which promoted habitat conservation, species perpetuation, and global sustainable management, from Swinburne University of Technology (Hawthorn, Victoria, Australia), while being mentored by the late world-renowned Australian herpetologist and academic Dr. Michael James Tyler (Order of Australia recipient). Dr. Fucsko, an educational consultant, was responsible for major enhancements in the quality of the images provided herein and is also a research collaborator with the fifth author (LDW). Dr. Fucsko’s academic interests include: clinical psychology, focusing on psychopathology; neuroscience and empathy; environmental education for sustainable development; sentient ecology; academic writing; and creative writing, including poetry and creative nonfiction books for children and young adults. We use Dr. Fucsko’s given name as a noun in apposition, with the spelling of the Latin transliteration from the Ancient Greek Λυδία (Ludia), meaning “beauty, beautiful, noble one.” Thus, the snake named here as Tantilla lydia sp. nov. can be envisioned as the “beautiful one.”


Cristopher A. Antúnez-Fonseca, Jocelyn A. Castro, Farlem G. España, Josiah H. Townsend and  Larry D. Wilson. 2020. A New Species of Tantilla of the taeniata group (Squamata: Colubridae) from Refugio de Vida Silvestre Barras de Cuero y Salado in Caribbean coastal Honduras. Amphibian & Reptile Conservation. 14(3) [Taxonomy Section]: 86–102 (e258). 

Resumen.—Describimos una nueva especie de Tantilla del Refugio de Vida Silvestre Barras de Cuero y Salado (RVSBCS), en la costa caribeña de Honduras. Asignada al grupo Tantilla taeniata, esta especie difere de otras en este grupo en cuanto a patrón de color, número de escamas, medidas y hábitat. Están presentes un collar nucal pálido incompleto y una franja mediodorsal pálida que se extiende hasta el borde proximal de las flas paravertebrales en el tercio anterior del cuerpo. La extensión lateral de la tapa de la cabeza no separa completamente la mancha pálida postocular del collar nucal pálido. Una franja lateral pálida está presente en las mitades adyacentes de las flas de escamas dorsales 3 y 4. El color de fondo ventrolateral es mucho más oscuro que el color de fondo dorsolateral. El número ventral + subcaudal de 244 es la cifra más alta para los machos de las especies del grupo. El RVSBCS es una importante área costera protegida en Mesoamérica, ya que tiene una importante diversidad costera, incluidas especies icónicas, además de albergar a esta serpiente tragaciempiés. 
Palabras Claves. Área protegida, Departamento de Atlántida, Reptilia, Río Salado, serpiente ciempiés, taxonomía