[Most Recent Entries] [Calendar View]
Thursday, April 10th, 2025
| Time | Event | ||||||
| 4:46a | [Ichthyology • 2025] Hypoplectrus espinosai (Teleostei: Serranidae) • A New hamlet on Coral Reefs in the southwestern Gulf of Mexico
Abstract The hamlets (Hypoplectrus spp., Teleostei: Serranidae) are a group of small predatory reef-associated fishes endemic to the tropical northwestern Atlantic that are characterized by an exceptionally high diversification rate. Currently 18 species are recognized, with seven described or redescribed in the last 14 years. Here, we describe the Campeche Bank hamlet, Hypoplectrus espinosai sp. nov. As indicated by its common name, this species is distributed throughout the Campeche Bank in the southwest Gulf of Mexico. Hypoplectrus espinosai sp. nov. differs from two similar hamlets, the butter hamlet H. unicolor (Walbaum) and the Veracruz hamlet H. castroaguirrei Del Moral Flores, Tello-Musi & Martínez-Pérez in terms of geographic distribution and color pattern. Furthermore, phylogenetic and population genetic analyses based on whole-genome data from 68 individuals indicate that H. espinosai sp. nov. is genetically distinct from H. unicolor and H. castroaguirrei. Pisces, Gulf of Mexico, Campeche Bank, Serranidae, reef fishes, hamlets, Hypoplectrus
Hypoplectrus espinosai sp. nov. Puebla, Aguilar-Perera, Robertson & Domínguez-Domínguez 2025 English common name: Campeche Bank hamlet Spanish common names: mero del Banco de Campeche (AFS), vaca del Banco de Campeche (FAO), hamlet del Banco de Campeche (vernacular) Diagnosis. Hypoplectrus espinosai sp. nov. is distinguished from all named congeners by coloration. Body white with thin vertical lines but no bars (or very faint). Black spot on snout surrounded by electric blue lines. Caudal peduncle entirely covered by black saddle blotch, which extends over posterior part of body, and sometimes over posterior part of dorsal fin. Black saddle blotch is more extensive than in H. unicolor. Black eye-mask characteristic of H. castroaguirrei absent. Etymology. We assign the species name espinosai sp. nov. in honor of Héctor Salvador Espinosa Pérez (1954–2022), a dedicated Mexican ichthyologist, founder of the Mexican Ichthyological Society and curator of the Mexican National Fish Collection. The common name refers to the geographic distribution of the species, the Campeche Bank off the north coast of the Yucatan Peninsula in the southwestern Gulf of Mexico, Mexico. Oscar PUEBLA, Alfonso AGUILAR-PERERA, Martin HELMKAMPF, D. Ross ROBERTSON, Carlos J. ESTAPÉ, Allison Morgan ESTAPÉ and Omar DOMÍNGUEZ-DOMÍNGUEZ. 2025. Hypoplectrus espinosai sp. nov. (Teleostei: Serranidae), A New hamlet on Coral Reefs in the southwestern Gulf of Mexico. Zootaxa. 5618(4); 509-524. DOI: doi.org/10.11646/zootaxa.5618.4.3 [2025-04-04] | ||||||
| 4:55a | [Paleontology • 2025] Huadanosaurus sinensis & Sinosauropteryx lingyuanensis • Two New compsognathid-like Theropods (Coelurosauria: Sinosauropterygidae) show diversified predation strategies in Theropod Dinosaurs
ABSTRACT The Compsognathidae was originally considered an early-diverging clade of coelurosaur theropods. However, recent study suggests that Compsognathidae is not monophyletic. Here, we describe two new compsognathid-like species, Sinosauropteryx lingyuanensis sp. nov. and Huadanosaurus sinensis gen. et sp. nov. from the Lower Cretaceous Yixian Formation of Dawangzhangzi (Lingyuan, Western Liaoning, China). The phylogenetic results indicate that all compsognathid-like theropods from the Early Cretaceous Jehol Biota form a monophyletic group Sinosauropterygidae nested among early-diverging coelurosaurs. Morphological comparison between various species of sinosauropterygids from the Early Cretaceous of Northeast China, combined with the phylogenetic results, suggests that at least three distinct hunting strategies were present among coeval species. The diversification of theropods should be attributed to the landscape caused by the destruction of the North China craton. Early Cretaceous, Jehol Biota, Yixian Formation, Sinosauropterygidae, North China craton
Dinosauria Owen, 1842 Saurischia Seeley, 1888 Theropoda Marsh, 1881 Coelurosauria Von Huene, 1914 Sinosauropterygidae Ji et Ji, 1996 Sinosauropteryx Ji et Ji, 1996 Sinosauropteryx lingyuanensis sp. nov Diagnosis. Differs from other sinosauropterygids in possessing the following autapomorphies: the jugal ramus of the maxilla subequal to the length of the snout; maxilla relatively low and elongated, maxillary fenestra large and subequal in size to the external naris; absence of the ischiatic boot. Huadanosaurus sinensis gen. et sp. nov. Diagnosis. Differs from other sinosauropterygids in possessing the following autapomorphies: large oval concavity between the anterior margin of the antorbital fossa and the maxilla; large lacrimal recess on the lacrimal, U-shaped bifurcation at the posteroventral margin of the dentary, small and crescent-shaped external mandibular fenestra, fanshaped neural spine on the axis, strongly anteroposteriorly elongated centrum in the posterior cervical vertebrae, small pleurocoel on centrum of the anterior dorsal vertebrae, the coracoid elongated lateromedially, not oval-shaped, the supracetabular crest well developed on the ilium, the obturator process >70% of the length of the ischial shaft, and the tibia ∼1.3 times of the femoral length. Etymology. ‘Huadan’, a Chinese word meaning the birthday of a great person or a great institution, commemorating the 75th anniversary of the founding of the People’s Republic of China and the Chinese Academy of Sciences, the 95th anniversary of the founding of the Palaeontological Society of China and the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, and the 40th anniversary of the founding of the Chinese Society of Vertebrate Paleontology; ‘saurus’, Greek for lizard. ‘sine’, Latin referring to China.
Rui Qiu, Xiaolin Wang, Shunxing Jiang, Jin Meng and Zhonghe Zhou. 2025. Two New compsognathid-like Theropods show diversified predation strategies in theropod dinosaurs. National Science Review, Volume 12(5); nwaf068. DOI: doi.org/10.1093/nsr/nwaf068 [22 February 2025]     | ||||||
| 1:46p | [Botany • 2025] Begonia himalaica (Begoniaceae, sect. Platycentrum) • A New Species from the Indian Eastern Himalayas
Abstract Repeated expeditions conducted in Arunachal Pradesh resulted in the discovery of a unique Begonia, Begonia himalaica D.Borah, Chowlu, A.Shenoy and Taram, belonging to sect. Platycentrum. It is close to Begonia rockii Irmsch. in having broadly ovate leaves, hairy petioles, and bearing inflorescences directly from the rhizome, but differs in having leaves glabrous adaxially and sparsely setose abaxially, irregular purplish red patches between veins, 20–40 cm long petiole covered with setose hairs, large glabrous navicular bracts at the base of the inflorescence, and glabrous ovary. This species is described here based on collections made in Chayang Tajo, East Kameng District of Arunachal Pradesh. The new species is assessed as ‘Data Deficient' according to IUCN Guidelines for Using the IUCN Red List Categories and Criteria. Keywords: Arunachal Pradesh, India, northeast India, sect. Platycentrum, Taxonomy  Begonia himalaica D.Borah, Chowlu, A.Shenoy & Taram sp. nov.  Dipankar Borah, Krishna Chowlu, Momang Taram, Althaf Ahamed Kabeer, Mark Hughes and Akshath Shenoy. 2025. Begonia himalaica, A New Species from the Indian Eastern Himalayas. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.04745 [02 April 2025]  | ||||||
| 4:33p | [PaleoMammalogy • 2025] Cambelodon torreensis • A New pinheirodontid multituberculate from the Upper Jurassic of western Portugal
Abstract Cambelodon torreensis gen. et sp. nov. is described based on a recently discovered, well-preserved right hemimandible of a pinheirodontid multituberculate from the Upper Jurassic (Tithonian) Freixial Formation at the Ulsa quarry, Cambelas, Portugal. This discovery marks a pivotal advancement in understanding the anatomy of Pinheirodontidae, a family previously known only from isolated teeth. Cambelodon torreensis has a distinctive suite of morphological characteristics, including high-crowned premolars with prominent subtriangular lobes, an elongated diastema, a well-developed masseteric fossa, and a large complement of basal cusps on the fourth lower premolar. Notably, it may have had a non-sequential posteroanterior tooth replacement, a pattern previously documented only in paulchoffatiids from the Oxfordian and Kimmeridgian. This finding extends the temporal range of this dental developmental trait to include late Tithonian multituberculates, providing new insights into the dental evolution of early mammals. Geological and palynological analyses of productive sites at the Freixial Fm. suggest a low-energy depositional environment with periodic soil formation in an arid or semi-arid palaeoclimate. The composition and taphonomy of the bonebed, which contains both macrofossils and microfossils, indicate a mud-entrapment episode. Parsimony-based phylogenetic analysis confirms the placement of Cambelodon torreensis in Pinheirodontidae, validating this family as a distinct and monophyletic group within multituberculates. This research fills gaps in our knowledge of the early multituberculate fossil record and provides insights into the ecological dynamics that shaped the ancient environments of the Iberian Peninsula. Keywords: Multituberculata, Pinheirodontidae, tooth replacement, Lusitanian Basin, Tithonian, palaeoenvironment  Cambelodon torreensis gen. et sp. nov. Victor F. Carvalho, Bruno Camilo, Ricardo Araújo, Lígia Castro, José C. Kullberg, Hilde G. B. Desmet, Ignace Nerinckx, Marco Leite and Diego Reis. 2025. Cambelodon torreensis, a new pinheirodontid multituberculate from the Upper Jurassic of western Portugal. Papers in Palaeontology. 11(2); e70012. DOI: doi.org/10.1002/spp2.70012 [10 April 2025] https://x.com/raraujopaleo/status/191030  | ||||||
| 6:41p | [Botany • 2025] Bulbophyllum sandfordiorum (Orchidaceae: Epidendroideae: Bulbophyllinae) • A New Species of section Papulipetalum from West Papua Province, Indonesia
Summary A new species of Bulbophyllum from section Papulipetalum, B. sandfordiorum Saputra & Schuit., is described based on a specimen from West Papua, Indonesia, and its sectional placement is discussed. A detailed morphological description and diagnosis, information on distribution and ecology and a preliminary conservation assessment are provided. Key Words: Anggrek, Arfak Mountains, Jenis baru, New Guinea, Papua Barat   Bulbophyllum sandfordiorum Saputra & Schuit., sp. nov. (sect. Papulipetalum). Etymology. The epithet sandfordiorum honours the late Elodie Sandford and her family, who inspired young explorers and amateur photographers to engage in adventurous and innovative projects. These projects highlight how photography can deliver a strong conservation message and bring benefit to the people, the environment, and biodiversity in general. Reza Saputra, André Schuiteman, Jimmy F. Wanma, Laura Jennings, Yanuar I. D. Cahyo, Taufik Haryanto, Bianza F. Putri and Charlie D. Heatubun. 2025. Bulbophyllum sandfordiorum (Orchidaceae), A New Species of Bulbophyllum section Papulipetalum from West Papua Province, Indonesia. Kew Bulletin. DOI: doi.org/10.1007/s12225-025-10259-y [25 March 2025]   |
| << Previous Day |
2025/04/10 [Calendar] |
Next Day >> |