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Tuesday, July 8th, 2025

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    4:56a
    [Entomology • 2025] Pterotiltus bioko • A New Species of Pterotiltus Karsch (Orthoptera: Acrididae: Oxyinae) from Equatorial Guinea

     

     Pterotiltus bioko Oumarou-Ngoute & Rowell, 

    in Oumarou-Ngoute, Song, Mariño-Pérez, Woo, Linde et Rowell, 2025. 

    Abstract
    The genus Pterotiltus Karsch, 1893 currently contains 18 described species. The genus is distributed in West, Central, and East Africa from Ghana to the Congo basin as far as Western Uganda. Pterotiltus bioko sp. nov. is described from specimens recently collected on Bioko Island in Equatorial Guinea. A key to Pterotiltus species is provided.

    Keywords: Caelifera, grasshopper, humid forest, new species, taxonomy, West-Central Africa

    Habitus of Pterotiltus bioko sp. nov.
    A. Male lateral view, road to Ureka, Reserva Cientifica de la Caldera de Luba, Bioko Island, 15-xii-2023; B. Male dorsal view, same data than A;
    C. Female with red patches, lateral view, same data than A; D. Female with yellow patches, lateral view (maybe newly molted female), Pico Basile National Park, Bioko Island, 18-xii-2023;
    E. Holotype, male for MfN, lateral view; F. Paratype, female for MfN, lateral view.

     Pterotiltus bioko Oumarou-Ngoute & Rowell, sp. nov.

    Type locality.— Reserva Cientifica de la Caldera de Luba, Bioko Island, EQUATORIAL GUINEA.

    Etymology.— Toponymic, referring to Bioko Island, Equatorial Guinea.


     Charly Oumarou-Ngoute, Hojun Song, Ricardo Mariño-Pérez, Brandon M. Woo, Jackson Linde and C.H.F. Rowell. 2025. A New Species of Pterotiltus Karsch (Orthoptera, Acrididae, Oxyinae) from Equatorial Guinea. Journal of Orthoptera Research. 34(2): 201-212. DOI: doi.org/10.3897/jor.34.141073

    1:19p
    [Paleontology • 2025] Eotephradactylus mcintireae • Unusual Bone Bed reveals A Vertebrate Community with Pterosaurs and Turtles in equatorial Pangaea before the end-Triassic Extinction


    Eotephradactylus mcintireae 
     Kligman, Whatley, Ramezani1, Marsh, Lyson, Fitch, Parker & Behrensmeyer, 2025

    artwork: Brian Engh.
     
    Significance: 
    PFV 393 is the first radioisotopically dated (209.187 ± 0.083 Ma old) high-diversity continental vertebrate fossil assemblage to fill a 12-Ma fossil gap preceding the end-Triassic extinction. The taphonomy and depositional setting of this assemblage show that key members of post–Triassic Mesozoic vertebrate communities, including frogs, lepidosaur reptiles, pterosaurs, and turtles, coexisted with archaic lineages such as metoposaurid amphibians, trilophosaurid archosauromorphs, Vancleavea, doswelliids, phytosaurs, and aetosauriforms in the mesic fluvial environments of aridifying equatorial Pangaea approximately 7 Ma prior to the end-Triassic extinction. A member of this paleocommunity and one of the earliest few pterosaurs found outside of Europe, the newly described Eotephradactylus mcintireae gen. et sp. nov., reveals novel aspects of pterosaur mandibular evolution, ecology, and biogeography.

    Abstract
    Temporally constrained microvertebrate bone beds are powerful tools for understanding continent-scale biotic change. Such sites are rare globally in nonmarine settings during the 12 million years (Ma) preceding the end-Triassic extinction (ETE; ~201.5 Ma), obscuring patterns of faunal change across this interval. A vertebrate assemblage from Arizona, USA, provides unique insights into community composition and ecology prior to the ETE. PFV 393 is a macro- and microvertebrate bone bed preserved in a volcaniclastic fluvial channel-fill with a high-precision U-Pb zircon age of 209.187 ± 0.083 Ma. The fossil assemblage consists of three-dimensionally preserved, delicate, and small skeletal elements of known and new taxa that document a local paleocommunity including hybodontiformes, actinopterygians, actinistians, metoposaurids, salientians, synapsids, lepidosaurs, testudinatans, trilophosaurids, Vancleavea, doswelliids, Revueltosaurus, loricatans, phytosaurs, and pterosaurs. The new early-diverging pterosaur is one of the few Triassic pterosaurs found outside of Europe and the only one with a documented precise radioisotopic age. The testudinatan material shows the rapid dispersal of terrestrial stem-turtles across the Pangaean supercontinent in the Norian and refines temporal constraints on the origin of the turtle shell. The presence of vertebrate lineages endemic to the Triassic highlights their persistence in a mesic, fluvial paleocommunity through a prolonged phase of environmental change preceding the ETE. These lineages coexisted with frogs, lepidosaurs, turtles, and pterosaurs- all key elements of post–Triassic Mesozoic communities. The arrival of turtles and pterosaurs in west-central Pangaea therefore may have been driven by the northward drift of Laurentia from humid equatorial conditions into more arid subtropical latitudes.

    life restoration of Eotephradactylus mcintireae catching a fish in the Chinle Formation environment.
    An artist's reconstruction of the fossilized landscape, plants and animals found preserved in a remote bonebed in Petrified Forest National Park in Arizona. Researchers led by paleontologist Ben Kligman,, present the fossilized jawbone of a new pterosaur species and describe the sea gull-sized flying reptile along with hundreds of other fossils they unearthed from the site. These fossils, which date back to the late Triassic period around 209 million years ago, preserve a snapshot of a dynamic ecosystem where older groups of animals lived with evolutionary upstarts.
    The newly described pterosaur Eotephradactylus mcintireae is seen eating an ancient ray-finned fish alongside an early species of turtle and an early frog species, with the skeleton of an armored crocodile relative lying on the ground and a palm-like plant growing in the background.
    artwork: Brian Engh.

    Eotephradactylus mcintireae gen. et sp. nov.


    Ben T. Kligman, Robin L. Whatley, Jahandar Ramezani1, Adam D. Marsh, Tyler R. Lyson, Adam J. Fitch, William G. Parker and Anna K. Behrensmeyer. 2025. Unusual Bone Bed reveals A Vertebrate Community with Pterosaurs and Turtles in equatorial Pangaea before the end-Triassic Extinction. Proceedings of the National Academy of Sciences. 122 (29) e2505513122. DOI: doi.org/10.1073/pnas.2505513122 [July 7, 2025]

    2:45p
    [Invertebrate • 2025] Clavelina ossipandae • A New Species of Eusynstyela (Ascidiacea: Stolidobranchia) from Okinawa, Japan with Molecular Insight into Its Phylogenetic Position


    Eusynstyela sesokoensis 
    Hasegawa, 2025


    Abstract
    The colonial styelid genus Eusynstyela Michaelsen, 1904 comprises 12 species. Seven colonies of Eusynstyela were collected via SCUBA diving from three coastal sites in Okinawa, Japan, between 2018 and 2023. Morphological observations in this study identified these specimens as a new species, described here as Eusynstyela sesokoensis sp. nov. This species can be distinguished from its congeners by the following characteristics: i) ten oral tentacles, ii) twelve stomach plications, iii) absence of a stomach caecum, iv) no lobes on the anal rim, and v) two testes per gonad. Intraspecific variations were observed in zooid coloration and the number of longitudinal vessels on the pharyngeal folds. The molecular phylogenetic analysis based on a partial sequence of 18S rRNA and the mitochondrial cytochrome c oxidase subunit I genes indicates a possible sister relationship between the new species and E. latericius (Sluiter, 1904).
     
    Keywords: ascidian, Chordata, Sesoko Island, subtropical, Styelidae, systematics, taxonomy, Tunicata

    Eusynstyela sesokoensis sp. nov.
    A, In situ live colony of the holotype, NCHSU 962, photographed by N. Hasegawa; B, in situ live colony of one of the paratypes, NCHSU 966, photographed by Y. Kushida;
    C, zooid, viewed from the ventral side; D, peripharyngeal area in the dorsal side; E, gonad, viewed from atrial cavity.
     
    Eusynstyela sesokoensis sp. nov. 


    Naohiro Hasegawa. 2025. Description of A New Species of Eusynstyela (Ascidiacea: Stolidobranchia) from Okinawa, Japan with Molecular Insight into Its Phylogenetic Position. Species Diversity. 30(1); 99-106. DOI: doi.org/10.12782/specdiv.30.99
    https://x.com/Species_Divers/status/1925746069654110374

    2:45p
    [Entomology • 2025] Chremistica doiluangensis, Pomponia bimaculosalaria, Megapomponia isanensis, Muda songkhlensis, ... • Thirteen New cicada Species (Hemiptera: Cicadidae) from Thailand with the Resurrection of Pomponiini Kato, 1932, A New Combination, a

     

    Abstract
    The species Chremistica doiluangensis sp. nov., Chremistica kalasinensis sp. nov., Pomponia bimaculosalaria sp. nov., Aetanna lannensis sp. nov., Vietanna oresbia sp. nov., Metapurana phuruensis sp. nov., Minipomponia doiinthanonensis sp. nov., Megapomponia isanensis sp. nov., Meimuna chiangmaiensis sp. nov., Meimuna maehongsonensis sp. nov., Muda songkhlensis sp. nov., Muda phetchabunensis sp. nov., and Muda chanthaburensis sp. nov. are described as new clarifying the taxonomy of undescribed species in a previous publication on Thailand cicadas. In addition, Pomponiini Kato, 1932 rev. stat. is resurrected from junior synonymy of Psithyristriini Distant, 1905, Pomponia adusta (Walker, 1850) is reassigned to become Megapomponia adusta (Walker, 1850) comb. nov., and Muda Distant, 1897 is reassigned from Chlorocystini Distant, 1905 to Katoini Moulds & Marshall, 2018 (in Marshall et al., 2018).

    Hemiptera, Taxonomy, Cicadinae, Tacuini, Dundubiini, Cicadettinae, Chlorocystini, Katoini
       

    Allen F. SANBORN. 2025. Thirteen New cicada Species (Hemiptera: Cicadidae) from Thailand with the Resurrection of Pomponiini Kato, 1932, A New Combination, and A New Tribal Assignment for Muda Distant, 1897. Megataxa. 17(1); 41-90. DOI: doi.org/10.11646/megataxa.17.1.2 [2025-06-05]
     

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