scholarly journals A new species of Proegernia from the Namba Formation in South Australia and the early evolution and environment of Australian egerniine skinks

2021 ◽  
Vol 8 (2) ◽  
pp. 201686
Author(s):  
K. M. Thorn ◽  
M. N. Hutchinson ◽  
M. S. Y. Lee ◽  
N. J. Brown ◽  
A. B. Camens ◽  
...  

The diverse living Australian lizard fauna contrasts greatly with their limited Oligo-Miocene fossil record. New Oligo-Miocene fossil vertebrates from the Namba Formation (south of Lake Frome, South Australia) were uncovered from multiple expeditions from 2007 to 2018. Abundant disarticulated material of small vertebrates was concentrated in shallow lenses along the palaeolake edges, now exposed on the western of Lake Pinpa also known from Billeroo Creek 2 km northeast. The fossiliferous lens within the Namba Formation hosting the abundant aquatic (such as fish, platypus Obdurodon and waterfowl) and diverse terrestrial (such as possums, dasyuromorphs and scincids) vertebrates and is hereafter recognized as the Fish Lens. The stratigraphic provenance of these deposits in relation to prior finds in the area is also established. A new egerniine scincid taxon Proegernia mikebulli sp. nov. described herein, is based on a near-complete reconstructed mandible, maxilla, premaxilla and pterygoid. Postcranial scincid elements were also recovered with this material, but could not yet be confidently associated with P. mikebulli . This new taxon is recovered as the sister species to P. palankarinnensis , in a tip-dated total-evidence phylogenetic analysis, where both are recovered as stem Australian egerniines. These taxa also help pinpoint the timing of the arrival of scincids to Australia, with egerniines the first radiation to reach the continent.

Phytotaxa ◽  
2015 ◽  
Vol 231 (1) ◽  
pp. 53
Author(s):  
Leonardo Biral ◽  
Eric De Camargo Smidt ◽  
Mônica Bolson ◽  
Julio Antônio Lombardi

A new species of Maytenus has been discovered in the Brazilian Atlantic Forest. The new taxon, Maytenus nemorosa, occurs mostly in ombrophilous rain forests at an elevation of 500 m to 1200 m. Maytenus nemorosa resembles M. gonoclada but differs from it by possessing oblong-elliptical leaves with entire margins and larger fruits with thicker pericarp walls. A phylogenetic analysis was conducted with nrITS and plastid matK regions, including the new species and additional taxa available from the NCBI-GenBank. The results from the phylogenetic analysis places Maytenus nemorosa nested within a clade of species that have fruits possessing a coriaceous pericarp and close to both Maytenus gonoclada and Maytenus salicifolia, as expected from morphological similarities. Additionally, M. cardenasii and M. erythrocarpa, from Bolivia, are both recognized as new synonyms for M. floribunda after an examination of their descriptions, types, and diverse collections.


Phytotaxa ◽  
2016 ◽  
Vol 244 (1) ◽  
pp. 45 ◽  
Author(s):  
CHUN LI ◽  
LI-HUA YANG ◽  
DAI-KE TIAN ◽  
YUE CHEN ◽  
RUI-JUAN WU ◽  
...  

Begonia leipingensis D. K. Tian, L. H. Yang & C. Li (2n = 30), a new species in Begonia sect. Coelocentrum from the limestone area of Guangxi, China. B. leipingensisis is easily distinguished from any other compound-leaved species in Begonia by its large variation in petiolule number and its unique spirally-arranged petiolule pattern, which has never been seen in Begoniaceae before and rarely seen even in other angiosperm taxa. Besides having non-overlapping flowering periods, it is clearly different from B. fangii, the most morphologically similar species in the same section and with the same chromosome number. In addition to its unique petiolule pattern, B. leipingensis has longer abaxial wings, shorter internodes, and usually larger leaves, leaflets and habit. Molecular phylogenetic analysis showed that B. leipingensis formed an independent lineage belonging to Sect. Coelocentrum. Morphological and phylogenetic evidence strongly supports this species as a new taxon in Sect. Coelocentrum of Begonia. B. leipingensis was assessed to be critically endangered based on criterion outlined by IUCN Red List Categories and Criteria.


Phytotaxa ◽  
2018 ◽  
Vol 371 (2) ◽  
pp. 102 ◽  
Author(s):  
LUCA BORGATO ◽  
DAMIEN ERTZ

Astrochapsa martinicensis is described as new to science. It is characterized by a whitish-farinose thallus, 6–8-spored asci, (4–)5–7(–9)-septate ascospores of (12.5–)14–24(–29) × (4.5–)5–6.5(–7) µm and a chemistry with one terpenoid and traces of UV+ substances. The new species was discovered among lichen specimens collected in 2013 on the island of Martinique (Lesser Antilles). A phylogenetic analysis using nuLSU sequences places the new species in the genus Astrochapsa, as sister species to an unidentified specimen from Venezuela. An identification key to all currently accepted Astrochapsa species is provided.


Phytotaxa ◽  
2019 ◽  
Vol 392 (2) ◽  
pp. 147
Author(s):  
SALVADOR ARIAS ◽  
HÉCTOR J. TAPIA ◽  
ULISES GUZMÁN

Cephalocereus parvispinussp. nov. (Cactaceae) from the Mixtecan region (Oaxaca state, Mexico) is described and illustrated. The morphological and molecular evidence support its recognition as a distinct species within the genus Cephalocereus. The new species is characterized by arborescent habit up to 8 m in height, acrotonic branching, stems with 15−23 ribs; flowers 3.5−4 cm long, pericarpel and receptacular tube without podaria nor spines; fruit 1.7−2.2 cm long, dark red, with white flesh; seeds ca. 1.4 ×0.6 mm, dark brown, with a rugose micro-relief. The phylogenetic analysis usingseven cpDNA markers,shows that C. parvispinusis the sister species of C. polylophusand C. euphorbioides.


Zootaxa ◽  
2020 ◽  
Vol 4819 (3) ◽  
pp. 589-594
Author(s):  
JUNGGON KIM ◽  
ARTUR TASZAKOWSKI ◽  
ALEKSANDER HERCZEK ◽  
KWANG-HO KIM ◽  
SUNGHOON JUNG

The second fossil record of deraeocorine species from Miocene Dominican amber is presented with description of a new taxon, Amberderaeous gigophthalmus gen. and sp. nov. based on a well-preserved specimen. The need for revision of related group Eustictus and a comprehensive study of its tribal placement within Deraeocorinae are discussed.


Phytotaxa ◽  
2016 ◽  
Vol 273 (1) ◽  
pp. 34 ◽  
Author(s):  
JUNFU LI ◽  
RUNGTIWA PHOOKAMSAK ◽  
AUSANA MAPOOK ◽  
SARANYAPHAT BOONMEE ◽  
JARAYAMA D. BHAT ◽  
...  

A new Seifertia species was isolated from hanging rachides of Rhododendron decorum in Yunnan Province, Southwest China. The new taxon was compared with the type species, S. azalea and differs in having wider conidiophores, with hyaline to subhyaline and smaller conidia, while S. azalea has olive-brown to brown, rarely branched conidiophores, and pale brown or olive-brown, very rarely septate conidia. Phylogenetic analyses of combined LSU, SSU and TEF1-α sequence data show that S. shangrilaensis forms a robust clade with S. azalea nested among the species of Melanommataceae in the order Pleosporales. A new species, S. shangrilaensis is introduced in this study, and Seifertia should be placed in Melanommataceae (Pleosporales, Dothideomycetes) based on phylogenetic analysis. Description and illustration of Seifertia shangrilaensis are provided with notes and its introduction is supported by molecular data.


PhytoKeys ◽  
2020 ◽  
Vol 165 ◽  
pp. 115-126
Author(s):  
Herison Medeiros ◽  
Jenifer de Carvalho Lopes ◽  
Pedro Acevedo-Rodríguez ◽  
Rafaela Campostrini Forzza

Thinouia is a Neotropical genus of lianas with approximately 12 species and is the only genus in tribe Paullinieae with actinomorphic flowers. During a taxonomic revision of the genus and fieldwork in south-western Amazonia, we found a new species that appears similar to Thinouia trifoliata (ex Allosanthus) because of its racemiform inflorescence. However, before describing the new species, we had to confirm that Allosanthus was congeneric with Thinouia so we could place the new species in the correct genus. The results of the phylogenetic analysis, based on molecular data (trnL intron and ITS sequences), show that Allosanthus should be included in Thinouia. Thus, the new taxon is described here as Thinouia cazumbensissp. nov. The new species is described, illustrated and phylogenetic trees showing relationships within supertribe Paulliniodae and Thinouia and the congeneric Allosanthus are given.


Zootaxa ◽  
2009 ◽  
Vol 1983 (1) ◽  
pp. 45-53 ◽  
Author(s):  
YU-FENG HSU

Antigius jinpingi, new species, is described from Taiwan, which Theclini fauna has been investigated extensively. The sister species of the new taxon is presumed to be A. butleri, a species distributed in the Asiatic continent and Japan. The larval host plant of A. jinpingi is unknown, but the most likely candidate is Quercus dentata, a deciduous oak with a relictual distribution in Taiwan.


Phytotaxa ◽  
2018 ◽  
Vol 369 (4) ◽  
pp. 251
Author(s):  
GABRIEL CERÉN ◽  
MIGUEL ÁNGEL CRUZ ◽  
JENNY MENJÍVAR ◽  
SALVADOR ARIAS

Deamia montalvoae sp. nov. (Cactaceae) from the Mesoamerican region (El Salvador, Guatemala, and Mexico) is described and illustrated based on morphological and molecular evidences. The new species is morphologically characterized by stems up to 2 cm in diameter, 7−8-ribbed, flowers (23−)27−30 cm long, with pericarpel covered by bristles and trichomes, but without spines; fruit 5−6 cm long and pale-red, covered by bristles and trichomes, with white flesh; seeds 3.1−3.5 mm long, dark brown, with a smooth microrelief. The phylogenetic analysis using two introns, rpl16 and trnL-trnF, and a spacer, psbA-trnH, shows that D. testudo is the sister species of D. montalvoae and D. chontalensis.


ZooKeys ◽  
2020 ◽  
Vol 912 ◽  
pp. 13-23 ◽  
Author(s):  
Menglin Wang ◽  
Thierry Bourgoin

A new genus with a new species Eusarimissus hezhouensisgen. nov. et sp. nov. from Guangxi Province of China are described in the tribe Sarimini of the family Issidae. Molecular sequences of 18S, 28S and COXI genes are provided for the new taxon. Phylogenetic analysis places this taxon sister to a previously sequenced but not yet described Sarimini genus ‘Eusarima sp. 4’. Taxonomic notes are provided for the genus Eusarima Yang, 1994. The species Eusarima (Nepalius) iranica Gnezdilov & Mozaffarian, 2011 is transferred to the genus Sarima Melichar 1903.


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