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Tuesday, May 21st, 2024
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| 4:06a | [Funga • 2024] Favolaschia imbricata, F. miscanthi & F. sinarundinariae (Agaricales: Mycenaceae) • Three New Species from South China
Abstract The genus Favolaschia within the family Mycenaceae is characterised by the gelatinous basidiomata with poroid hymenophore and most species inhabit monocotyledonous plants. In this study, many samples covering a wide geographic range in China were examined morphologically and phylogenetically using concatenated ITS1-5.8S-ITS2-nLSU sequence data. Three new species clustering in Favolaschia sect. Anechinus, namely Favolaschia imbricata, F. miscanthi and F. sinarundinariae, are described. Favolaschia imbricata is characterised by imbricate basidiomata with pale grey to greyish colour when fresh and broadly ellipsoid basidiospores measuring 7–9 × 5–6.8 µm; F. miscanthi is characterised by satin white basidiomata when fresh, broadly ellipsoid basidiospores measuring 7.5–10 × 5.5–7 µm and inhabit rotten Miscanthus; F. sinarundinariae is characterised by greyish-white basidiomata when fresh, dark grey near the base upon drying, broadly ellipsoid to subglobose basidiospores measuring 7–9 × 5–7 µm and inhabit dead Sinarundinaria. The differences amongst the new species and their morphologically similar and phylogenetically related species are discussed. In addition, an updated key to 19 species of Favolaschia found in China is provided. Key words: New taxa, phylogeny, taxonomy, wood-decaying fungi
Favolaschia imbricata Q.Y. Zhang, L.S. Bian, F. Wu & Y.C. Dai, sp. nov. Favolaschia miscanthi Q.Y. Zhang, L.S. Bian, F. Wu & Y.C. Dai, sp. nov.
Favolaschia sinarundinariae Q.Y. Zhang, L.S. Bian, F. Wu & Y.C. Dai, sp. nov. Qiu-Yue Zhang, Hong-Gao Liu, Wan-Ying Li, Xin Zhang, Yu-Cheng Dai, Fang Wu and Lu-Sen Bian. 2024. Three New Species of Favolaschia (Mycenaceae, Agaricales) from South China. MycoKeys. 104: 71-89. DOI: 10.3897/mycokeys.104.117310 [Part of: Taxonomy and secondary metabolites of wood-associated fungi] | ||||||
| 7:32a | [Mollusca • 2024] Sinocamaena cheni • New camaenid Genus and Species (Eupulmonata: Helicoidea) from Zhejiang, East China
Abstract We report a new land snail species representing a new genus from the mountainous area of Zhejiang, China. The snail has a depressed shell with granules all over the surface. The soft part of the new taxon is characterized by the presence of a mantle lobe whose form is reviewed herein across a wide range of helicoid snails, the presence of a developed epiphallic papilla, and the absence of a penial sheath, a dart sac apparatus and a flagellum. As indicated by a molecular-based phylogeny (16S + ITS2), the new taxon is deeply nested in the eastern Asian camaenid genera and shows a close relationship with the camaenids distributed in Central China. Key words: Anatomy, Camaenidae, mantle lobe, molecular phylogenetics, new genus, new species, taxonomy
Helicoidea Rafinesque, 1815 Camaenidae Pilsbry, 1895 Sinocamaena Wu, gen. nov. Chinese name: 中华坚螺属. Diagnosis: Shell depressed. Protoconch and teleoconch granulate. Protoconch strongly sculptured. Peristome expanded. Head wart low and tiny. Between the ommatophore insertions, a gland pore present. A mantle lobe present. Penial sheath absent. Epiphallus very short. Epiphallic papilla well developed. Flagellum absent. Etymology: This new genus is named after “sino” (= China) and “camaena” which is a camaenid genus that includes many large-sized helicoid species.
Sinocamaena cheni Wu, gen. et, sp. nov. Chinese name: 陈氏中华坚螺. Etymology: This new species is named in memory of Professor Chen De-Niu [陈德牛 Nov 1939 – March 2024], a known malacologist working on Chinese land molluscs. Prof. Chen was one of the doctoral supervisors for Wu M. Distribution: Zhejiang (only from type localities: Yunhe, Longquan). Min Wu, Tian Chen and Wang Shen. 2024. New camaenid Genus and Species from Zhejiang, East China (Eupulmonata, Helicoidea). ZooKeys. 1202: 135-154. DOI: 10.3897/zookeys.1202.118964 | ||||||
| 4:25p | [Paleontology • 2024] Koleken inakayali • A New abelisaurid Dinosaur from the end Cretaceous of Patagonia and Evolutionary Rates among the Ceratosauria
Abstract Gondwanan dinosaur faunae during the 20 Myr preceding the Cretaceous–Palaeogene (K/Pg) extinction included several lineages that were absent or poorly represented in Laurasian landmasses. Among these, the South American fossil record contains diverse abelisaurids, arguably the most successful groups of carnivorous dinosaurs from Gondwana in the Cretaceous, reaching their highest diversity towards the end of this period. Here we describe Koleken inakayali gen. et sp. n., a new abelisaurid from the La Colonia Formation (Maastrichtian, Upper Cretaceous) of Patagonia. Koleken inakayali is known from several skull bones, an almost complete dorsal series, complete sacrum, several caudal vertebrae, pelvic girdle and almost complete hind limbs. The new abelisaurid shows a unique set of features in the skull and several anatomical differences from Carnotaurus sastrei (the only other abelisaurid known from the La Colonia Formation). Koleken inakayali is retrieved as a brachyrostran abelisaurid, clustered with other South American abelisaurids from the latest Cretaceous (Campanian–Maastrichtian), such as Aucasaurus, Niebla and Carnotaurus. Leveraging our phylogeny estimates, we explore rates of morphological evolution across ceratosaurian lineages, finding them to be particularly high for elaphrosaurine noasaurids and around the base of Abelisauridae, before the Early Cretaceous radiation of the latter clade. The Noasauridae and their sister clade show contrasting patterns of morphological evolution, with noasaurids undergoing an early phase of accelerated evolution of the axial and hind limb skeleton in the Jurassic, and the abelisaurids exhibiting sustained high rates of cranial evolution during the Early Cretaceous. These results provide much needed context for the evolutionary dynamics of ceratosaurian theropods, contributing to broader understanding of macroevolutionary patterns across dinosaurs.      DINOSAURIA Owen, 1842. THEROPODA Marsh, 1881. CERATOSAURIA Marsh, 1884. ABELISAURIDAE Bonaparte and Novas, 1985 BRACHYROSTRA Canale et al., 2009 FURILEUSAURIA Filippi et al., 2016 Koleken gen. n. Derivation of name: Adapted from Kóleken, a name in Teushen language spoken by the native population of central Patagonia that means “coming from clay and water”, given the specimen was found in a sedimentary section dominated by claystone representing an estuarine environment. Koleken inakayali gen. et sp. n. Derivation of name: Honouring Inakayal, one of the last chiefs of Tehuelches, native people from central Patagonia. He is known for his resistance against Argentina's Conquest of the Desert military campaign, which resulted in the decimation and displacement of native communities from Patagonia. After his capture and eventual death in 1888, Inakayal's skeleton was stored at the La Plata Museum Anthropology collection but in 1994 his skeleton was respectfully restituted in its native place and buried by his people near the town of Tecka, in central Patagonia (Chubut Province, Argentina). Holotype: MPEF-PV 10826. The specimen includes closely associated (but disarticulated) remains of the skull and atlas, as well as the articulated postcranial skeleton composed of the posteriormost eight dorsal vertebrae, a complete sacrum, eight caudal vertebrae, an almost complete pelvis and hind limbs. Select measurements are provided in Table S1. Locality and horizon: The specimen was found at the Cerro Bayo Norte area, east of the Sierra de La Colonia, centre north of Chubut Province, Argentina (Fig. 1). Precise geographical provenance is deposited at the MPEF collection. The specimen was found close to the base of the stratigraphic section of the La Colonia Formation that crops out in this region (see Gasparini et al., 2015: Fig. 2). The age of the base of this unit has been recently restricted to the early Maastrichtian (Clyde et al., 2021), constraining the age of the new taxon to the Maastrichtian. Diagnosis: Koleken inakayali is a brachyrostran abelisaurid different from other theropods in having the following set of autapomorphies (marked with a *): (i) medially smooth paradental plates; (ii) dorsal surface of the nasal with a row of foramina orientated obliquely with respect to the longitudinal skull axis; (iii) *anterior ramus of the postorbital lacking the lateral wall reflected by a dorsoventral height less than half of its anteroposterior length, which makes the orbital surface face ventrally instead ventromedially; (iv) *dorsal surface of the postorbital with a ...    Diego Pol, Mattia Antonio Baiano, David Černý, Fernando E. Novas, Ignacio A. Cerda and Michael Pittman. 2024. A New abelisaurid Dinosaur from the end Cretaceous of Patagonia and Evolutionary Rates among the Ceratosauria. Cladistics. DOI: 10.1111/cla.12583  |
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