Phylogenetic relationships among the Stiletto Snakes (genus<i>Atractaspis</i>) based on external morphology

Moyer, Katie; Jackson, Kate

doi:10.1080/21564574.2010.520034

Cited by 10 publications

(11 citation statements)

References 24 publications

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“…Recently, several studies generated phylogenies of advanced African snakes, including colubrids, lamprophiids, elapids, and viperids [1–9]. In contrast, there has been only one morphology-based, phylogenetic study that focused on atractaspidines [10]. The Family Atractaspididae was originally erected by Günther [11] for species of Atractaspis , renowned for their unique and exceptionally long and mobile fangs [12].…”

Section: Introductionmentioning

confidence: 99%

“…Several recent molecular [7–9] and morphological studies [17–18] recovered a monophyletic group containing both aparallactines and atractaspidines, and with few exceptions [19–21], current classification recognizes Aparallactinae and Atractaspidinae as sister taxa in the Family Lamprophiidae [2, 7–9, 22–25]. Phylogenetic relationships within atractaspidines are not well known, because many phylogenetic studies that included atractaspidines were limited by low sample sizes [2, 8–10, 21–23, 26–27].…”

Section: Introductionmentioning

confidence: 99%

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Evolutionary history of burrowing asps (Lamprophiidae: Atractaspidinae) with emphasis on fang evolution and prey selection

et al. 2019

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Atractaspidines are poorly studied, fossorial snakes that are found throughout Africa and western Asia, including the Middle East. We employed concatenated gene-tree analyses and divergence dating approaches to investigate evolutionary relationships and biogeographic patterns of atractaspidines with a multi-locus data set consisting of three mitochondrial ( 16S , cyt b , and ND4 ) and two nuclear genes ( c-mos and RAG1 ). We sampled 91 individuals from both atractaspidine genera ( Atractaspis and Homoroselaps ). Additionally, we used ancestral-state reconstructions to investigate fang and diet evolution within Atractaspidinae and its sister lineage (Aparallactinae). Our results indicated that current classification of atractaspidines underestimates diversity within the group. Diversification occurred predominantly between the Miocene and Pliocene. Ancestral-state reconstructions suggest that snake dentition in these taxa might be highly plastic within relatively short periods of time to facilitate adaptations to dynamic foraging and life-history strategies.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evolutionary history of burrowing asps (Lamprophiidae: Atractaspidinae) with emphasis on fang evolution and prey selection

et al. 2019

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“…The phylogenetic relationships within the genus Atractaspis are still unclear. Two recent contributions included only some species of Atractapis (Underwood and Kochva 1993;Moyer and Jackson 2011). The study by Underwood and Kochva (1993) deviates in its phylogenetic conclusions partly from Laurent's (1950) species grouping.…”

Section: Discussionmentioning

confidence: 97%

A new stiletto snake (Lamprophiidae, Atractaspidinae, Atractaspis) from Liberia and Guinea, West Africa

Rödel¹,

Kucharzewski²,

Mahlow³

et al. 2019

ZSE

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We describe a new stiletto snake,Atractaspis, from western Liberia and southeastern Guinea. The new species shares with morphologically similar western AfricanAtractaspisspecies,A.reticulataandA.corpulenta, the fusion of the 2ndinfralabial with the inframaxillary. FromA.corpulentathe new species differs by a more slender body (276–288 ventrals and 19 or 20 dorsal scale rows versus 178–208 ventrals with 23–29 dorsal scale rows), a divided anal plate and divided subcaudal scales (both non-divided inA.corpulenta). The new species differs from mostA.reticulataby having 19 or 20 dorsal scale rows at midbody (versus 21–23, rarely 19), and a lower ventral count (276–288 versus 304–370). The new species thus has a relatively longer tail: snout-vent-length / tail-length in the female holotype (15.7) and paratype (21.5) versus a mean of 23.6 in seven femaleA.reticulata. The newAtractaspislikely is endemic to the western part of the Upper Guinea forest zone and thus adds to the uniqueness of this diverse and threatened biogeographic region.

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“…Specimens were examined under a Zeiss Stemi 2000-C stereo microscope, and photographs were taken with a Canon Rebel T3i DSLR camera and Canon 6D full frame DSLR camera. Characters were chosen from previous taxonomic studies of advanced snakes (LaDuc and Johnson, 2003;Devitt et al, 2008;Moyer and Jackson, 2011;Anderson and Greenbaum, 2012;Greenbaum et al, 2015). Snout-vent length (SVL) was measured with a metric ruler and rounded to the nearest 1.0 mm.…”

Section: Methodsmentioning

confidence: 99%

A Cryptic New Species of Polemon (Squamata: Lamprophiidae, Aparallactinae) from the Miombo Woodlands of Central and East Africa

Portillo

Branch

Tilbury

et al. 2019

Copeia

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African snake-eaters of the genus Polemon are cryptic, fossorial snakes that mainly inhabit the forests of central, eastern, and western Africa. Molecular results from a previous study demonstrated that Polemon christyi is not monophyletic-two distinct lineages were recovered from Uganda (the type locality) and southeastern Democratic Republic of the Congo (DRC). Genetic data indicated differences in sequence divergence and encoded amino acids between these lineages. Based on these molecular differences and diagnostic differences in morphology, we describe the lineage from southeastern DRC as a new species. Literature records indicate that it likely occurs in adjacent Tanzania and Zambia. It is the first species of Polemon to be described in over 70 years.

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Phylogenetic relationships among the Stiletto Snakes (genusAtractaspis) based on external morphology

Cited by 10 publications

References 24 publications

Evolutionary history of burrowing asps (Lamprophiidae: Atractaspidinae) with emphasis on fang evolution and prey selection

Evolutionary history of burrowing asps (Lamprophiidae: Atractaspidinae) with emphasis on fang evolution and prey selection

A new stiletto snake (Lamprophiidae, Atractaspidinae, Atractaspis) from Liberia and Guinea, West Africa

A Cryptic New Species of Polemon (Squamata: Lamprophiidae, Aparallactinae) from the Miombo Woodlands of Central and East Africa

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