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Sunday, July 28th, 2024
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| 12:41a | [Entomology • 2020] Aenetus maiasinus, A. trigonogrammus, etc. • Four New Species of Splendid Ghost Moths (Lepidoptera: Hepialidae: Aenetus) from Australia and Papua New Guinea
Abstract Four new Aenetus Herrich-Schäffer species are described from northern Australasia; Aenetus simonseni sp. nov. from the top-end of the Northern Territory, Australia, A. maiasinus sp. nov. from the Kimberley region of Western Australia, A. trigonogrammus sp. nov. from south-eastern Queensland, Australia, and A. albadamanteum sp. nov. from eastern Papua New Guinea. Aenetus simonseni sp. nov. and A. maiasinus sp. nov. appear to belong to the tegulatus-group of species (sensu Grehan et al. 2018), A. trigonogrammus sp. nov. is part of the splendens-group of species (sensu Simonsen 2018), while A. albadamanteum sp. nov. shares morphological similarities with A. hampsoni (Joicey & Noakes, 1914), A. crameri Viette, 1956, and A. toxopeusi Viette, 1956, from New Guinea, and A. cohici Viette, 1961 from New Caledonia. The four new species are illustrated and compared with superficially similar species in morphology and, for two species, molecular (mtDNA COI gene) sequences. Lepidoptera, Aenetus albadamanteum, Aenetus maiasinus, Aenetus simonseni, Aenetus trigonogrammus, Australasia, biogeography, COI, DNA Barcodes, taxonomy  Ethan P. Beaver, Michael D. Moore, John R. Grehan, Alejandro Velasco-Castrillón and Mark I. Stevens. 2024. Four New Species of Splendid Ghost Moths (Lepidoptera: Hepialidae: Aenetus) from Australia and Papua New Guinea. Zootaxa. 4809(3); 449–474. DOI: doi.org/10.11646/zootaxa.4809.3.2  | ||||||||
| 2:40a | [Botany • 2024] Sonerila quangnamensis (Melastomataceae: Sonerileae) • A New Species from the Truong Son Mountain Range, Vietnam
Abstract Sonerila quangnamensis, a new species from Truong Son Mountain Range, Vietnam, is described and illustrated here. Like S. plagiocardia, S. quangnamensis has obliquely ovate leaves, which are unequal in size within each pair. However, S. quangnamensis is obviously distinct in several characters: the cross-section of its stems and petioles is terete (vs. 4-winged), the adaxial surface of its leaves is covered with hispidulous-pilose (vs. puberulous), the hypanthium is unribbed (vs. 6-ribbed), and its anthers are uniformly yellow (vs. purple to purplish-pink, yellow-tinged towards the base). Keyword: biodiversity, endemism, Indochina, Sonerila plagiocardia, Sonerila montana, taxonomy  
Sonerila quangnamensis K.S.Nguyen, H.H.Truong,
Aver. & C.W.Lin, sp. nov. Diagnosis: Resembling S. plagiocardia in its obliquely ovate foliage, S. quangnamensis clearly differs in several key characteristics. It has terete (vs. 4-winged) stems and petioles, hispidulous-pilose (vs. puberulous) adaxial leaf surface, unribbed (vs. 6-ribbed) hypanthium, and uniformly yellow (vs. purple to purplish-pink, yellow-tinged towards the base) anthers. Etymology: The specific epithet refers to its type locality, Quang Nam province. The Vietnamese name “Sơn linh quảng nam” is proposed. Khang Sinh Nguyen, Hoang Hap Truong, Van Tien Tran, Leonid V. Averyanov and Che Wei Lin. 2024. Sonerila quangnamensis (Tribe Sonerileae, Melastomataceae), A New Species from the Truong Son Mountain Range, Vietnam. Taiwania. 69(3); 288-293. DOI: 10.6165/tai.2024.69.288  | ||||||||
| 3:39a | [Paleontology • 2024] Asiatyrannus xui • The first deep-snouted tyrannosaur from Upper Cretaceous Ganzhou City of southeastern China
Abstract Tyrannosaurids were the most derived group of Tyrannosauroidea and are characterized by having two body plans: gracile, long-snouted and robust, deep-snouted skulls. Both groups lived sympatrically in central Asia. Here, we report a new deep-snouted tyrannosaurid, Asiatyrannus xui gen. et sp. nov., from the Upper Cretaceous of Ganzhou City, southeastern China, which has produced the large-bodied and long-snouted Qianzhousaurus. Based on histological analysis, the holotype of Asiatyrannus xui is not a somatically mature adult, but it already passed through the most rapid growth stages. Asiatyrannus is a small to medium-sized tyrannosaurine, with a skull length of 47.5 cm and an estimated total body length of 3.5–4 m; or around half the size of Qianzhousaurus and other large-bodied tyrannosaurines in similar growth stages. Asiatyrannus and Qianzhousaurus are sympatric tyrannosaurid genera in the Maastrichtian of southeastern China. Asiatyrannus differs from Qianzhousaurus in that it has a proportionally deeper snout, longer premaxilla, deeper maxilla, and deeper dentary, and the cornual process of the lacrimal is inflated without developing a discrete horn. The different skull proportions and body sizes suggest that Asiatyrannus and Qianzhousaurus likely had different feeding strategies and occupied different ecological niches. Keywords: Asiatyrannus xui, Tyrannosauridae, Nanxiong Formation, Upper Cretaceous, China
Systematic paleontology Theropoda Marsh, 1881 Tetanurae Gauthier, 1986 Coelurosauria Huene, 1914 Tyrannosauroidea Osborn, 1905 Tyrannosauridae Osborn, 1905 Tyrannosaurinae Osborn, 1905 Asiatyrannus xui gen. et sp. nov. Diagnosis: Asiatyrannus xui is a small to medium-sized tyrannosaurine theropod that differs from other tyrannosauroids in possessing the following autapomorphies: two small, deep fossae located on the lateral surface of the premaxilla just lateral to the anteroventral border of the external naris, a large and sub-rectangular shaped maxillary fenestra, the posterior protuberances of the nasals connect to form two separated medium low ridges, a low ridge-like jugal accessory horn, the ventral margin of the anterior ramus of the jugal curving ventrally anterior to the accessory horn, the lateral surface of the descending process of the postorbital developed the anterodorsally trending fine lineations, the slender, straight, and banded-shaped postorbital bar, with almost straight and parallel anterior and posterior margins in lateral view, and the lateral surangular shelf extends to the posterior end of the surangular. Type locality: Nanxiong Formation (Upper Cretaceous, Maastrichtian) of Shahe Town, Nankang District, Ganzhou City, Jiangxi Province, China.
Etymology: The generic name is derived from Asia, and the suffix ‘tyrannus’ is derived from the Latin word for ‘king’ or ‘tyrant’, to emphasize that this is the new tyrannosaur collected in the continent of Asia. The specific name honors Dr. Xing Xu (Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences), a distinguished dinosaurologist who contributed greatly to the study of dinosaurs from China, including the research of several tyrannosaurs: Guanlong, Dilong, and Yutyrannus. Dr. Xing Xu has also been a great supporter of the paleontological research and science popularization work of the Zhejiang Museum of Natural History.   Wenjie Zheng, Xingsheng Jin, Junfang Xie and Tianming Du. 2024. The first deep-snouted tyrannosaur from Upper Cretaceous Ganzhou City of southeastern China. Scientific Reports. 14, 16276. DOI: doi.org/10.1038/s41598-024-66278-5 |
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