English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

African Shovel-snout snakes (   Prosymna    Gray, 1849) are small, semi-fossorial snakes with a unique compressed and beak-like snout.    Prosymna    occur mainly in the savanna of sub-Saharan Africa. Of the 16 currently recognised species, four occur in Angola:    Prosymna   ambigua    Bocage, 1873,    P.   angolensis    Boulenger, 1915,    P.   frontalis    (Peters, 1867), and    P.   visseri    FitzSimons, 1959. The taxonomical status and evolutionary relationships of    P.   angolensis    have never been assessed due to the lack of genetic material. This species is known to occur from western Angola southwards to Namibia, and eastwards to Zambia, Botswana and Zimbabwe. The species shows considerable variation in dorsal colouration across its range, and with the lower ventral scales count, an ‘eastern race’ was suggested. In recent years,    Prosymna    material from different parts of Angola has been collected, and with phylogenetic analysis and High Resolution X-ray Computed Tomography, the taxonomic status of these populations can be reviewed. Strong phylogenetic evidence was found to include theangolensis    subgroup as part of the largersundevalli    group, and the existence of three phylogenetic lineages within theangolensis    subgroup were identified, which each exhibit clear morphological and colouration differences. One of these lineages is assigned to the nominotypical    P.   angolensis    and the other two described as new species, one of which corroborates the distinct eastern population previously detected. These results reinforce that a considerable part of Angolan herpetological diversity is still to be described and the need for further studies.

Taxonomical review of Prosymna angolensis Boulenger, 1915 ( Elapoidea , Prosymnidae ) with the description of two new species