[Most Recent Entries] [Calendar View]
Saturday, June 18th, 2022
| Time | Event | ||||||
| 3:07p | [Botany • 2021] Impatiens macrantha (Balsaminaceae) • A New Species from Limestone Areas in Guangxi, China
Abstract Impatiens macrantha S. X. Yu & Ying Qin (Balsaminaceae), a new species from Guangxi, China, is described and illustrated. Phylogenetic analysis based on molecular data shows the new species to belong to I. subg. Clavicarpa and to be closely related to I. tubulosa with which it shares succulent stems and racemose inflorescences, but it can be easily distinguished by having a 4 – or 5 – ridged stem, obovate or elliptic leaf blade, and saccate lower sepal. Furthermore, I. macrantha is distinguishable from other Impatiens in China by its obviously larger leaves and flowers. The evidence from morphology and molecular data both support I. macrantha as new to science. Keywords: Balsaminaceae, Impatiens subg. Clavicarpa, limestone areas, morphology, phylogeny
Ying Qin, Chang-Ying Xia, Xu-Dong Yang, Pramote Triboun, Hoang Thanh Son, Xue-Xue Wu, Zi-Xin Pei and Sheng-Xiang Yu. 2021. Impatiens macrantha (Balsaminaceae) sp. nov., A New Species from Limestone Areas in Guangxi, China. Nordic Journal of Botany. 38(10); DOI: 10.1111/njb.02784 Researchgate.net/publication/355485600_Impatiens_macrantha_a_new_species_from_Guangxi_China | ||||||
| 3:08p | [PaleoMammalogy • 2022] Tartarocyon cazanavei • A New Gigantic Carnivore (Carnivora, Amphicyonidae) from the late middle Miocene of France
Abstract Serravallian terrestrial vertebrates are very uncommon in the northern margin of the Pyrenean Mountains. A mandible of a new large sized amphicyonid (ca. 200 kg) is here described from the marine deposits of Sallepisse (12.8–12.0 Mya). Despite that this new taxon is close in size to some European amphicyonids from the Miocene (e.g., Amphicyon, Megamphicyon, and Magericyon), the unique morphology of its p4, unknown in this clade, allows the erection of the new genus Tartarocyon cazanavei nov. gen. & sp. This taxon may be derived from a Cynelos-type amphicyonine. The description of this new taxon highlights the erosion of the ecological and morphological diversity of the Amphicyonidae in response to well-known Miocene events (i.e., Proboscidean Datum Event, Middle Miocene Climatic Transition, Vallesian Crisis).
Order CARNIVORA Bowdich, 1821 Suborder CANIFORMIA Kretzoi, 1943 Family Amphicyonidae Trouessart, 1885 Tribe Amphicyonini Trouessart, 1885 Genus Tartarocyon nov. gen. Etymology. Tartaro is the name of a legendary man-eater giant living in the Southwestern French Pyrenees, including the Bearn where the fossil has first been described. –cyon is the Greek for dog. Tartarocyon cazanavei nov. gen. et sp. Etymology. Dedicated to Mr Alain Cazanave, owner of the locality, who helped with the excavation during many years. Diagnosis. Large size Amphicyoninae possessing a complete dental formula. The taxon is characterized by the following features: long diastemata between the premolars, low p2 and p3, absent anterior accessory cuspid on p4, large and individualized distal accessory cuspid on p4, and unreduced m2 and m3. The taxon differs from all the European amphicyonids from the Miocene by the individualization of the distal accessory cuspid from the main cuspid on p4 and the extreme reduction of the distal shelf and cingulid.   Conclusions: Tartarocyon cazanavei nov. gen. & sp. is a new large amphicyonid from the French locality Sallespisse (12.8–12.0 Ma, France). The specimen may represent a new genus that will be further confirmed or not by future finds. It clearly differs morphologically from the Thaumastocyoninae and Haplocyoninae. It seems that this amphicyonid is a part of the radiation of a group of amphicyonines during the Miocene after MN3 (as exemplified by the genera Pseudocyon, Cynelos, Amphicyon, and Magericyon); it probably derived from a Cynelos-type amphicyonine. Tartarocyon nov. gen. illustrates the diversity of the amphicyonids in Europe: during MN7/8 amphicyonids were diversified in both the body mass and diet. However, the ecological and diversity reduction of the Amphicyonidae is polyphased. A new comprehensive analysis of the taxonomic and ecologic diversity of the amphicyonids is necessary to better understand the impact of biotic and abiotic factors on the evolution of these predators. Floréal Solé, Jean-François Lesport, Antoine Heitz and Bastien Mennecart. 2022. A New Gigantic Carnivore (Carnivora, Amphicyonidae) from the late middle Miocene of France. PeerJ. 10:e13457. DOI: 10.7717/peerj.13457  | ||||||
| 3:08p | [Botany • 2022] Ophiorrhiza sasidharaniana (Rubiaceae) • A New Species from the southern Western Ghats, Kerala, India
Abstract Ophiorrhiza sasidharaniana A.S.V. Nair, A. Gangapr., K.B. Rameshk. & E.S.S. Kumar sp. nova (Rubiaceae) is described from the southern Western Ghats, Kerala, India. It is morphologically similar to O. grandiflora, an endemic of the Western Ghats, but differs from it by the characters of the leaves, stipules, bracts, bracteoles, and flowers. A detailed description, distribution, notes on the habitats and colour images are provided.  Ophiorrhiza sasidharaniana A.S.V. Nair, A. Gangapr., K.B. Rameshk. & E.S.S. Kumar sp. nov.  Akhilesh Sasidharan Vasantha Nair, Gangaprasad Appukuttan Nair, Rameshkumar Koranappallil Bahuleyan and Ettickal Sukumaran Santhosh Kumar. 2022. Ophiorrhiza sasidharaniana (Rubiaceae), A New Species from the Southern Western Ghats, Kerala, India. Annales Botanici Fennici. 59(1); 149-152. DOI: 10.5735/085.059.0122  | ||||||
| 3:10p | [Mammalogy • 2022] Glischropus meghalayanus • Out of Southeast Asia: A New Species of Thick-thumbed Bat (Chiroptera: Vespertilionidae: Glischropus) from Meghalaya, north-eastern India
Abstract Thick-thumbed bats of the genus Glischropus are currently composed of four recognized species from Southeast Asia, two of which were described in recent times. Among these species, G. aquilus is endemic to Sumatra, G. javanus is restricted to western Java, whereas G. bucephalus is widely distributed north to the Isthmus of Kra and G. tylopus is widespread south to this zoogeographic boundary. Two recently collected Glischropus specimens from Meghalaya state in north-eastern India extend the known distribution range of the genus westward into South Asia by ca. 1000 km. Morphological examination of these specimens and comparison with all known species in this genus revealed marked differences in colouration, dental characters and bacular traits. We therefore describe the Meghalaya specimens as a new species. The discovery of the new species from a forest patch adjacent to Nongkhyllem Wildlife Sanctuary from where another specialized bamboo-dwelling species (Eudiscopus denticulus) was reported recently also underscore the importance of the area from a conservation point of view. Keywords: baculum, South Asia, taxonomy, wing morphology, Mammalia   Glischropus meghalayanus Uttam Saikia, Manuel Ruedi and Gabor Csorba. 2022. Out of Southeast Asia: A New Species of Thick-thumbed Bat (Chiroptera: Vespertilionidae: Glischropus) from Meghalaya, north-eastern India. Zootaxa. 5154(3); 355-364. DOI: 10.11646/zootaxa.5154.3.8 |
| << Previous Day |
2022/06/18 [Calendar] |
Next Day >> |