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Sunday, March 17th, 2024
| Time | Event | ||||||
| 3:08a | [Botany • 2024] Piriqueta velutina (Turneraceae: Passifloraceae s.l.) • A New endangered Species from the Brazilian Cerrado
Summary Piriqueta velutina is described as a new species, illustrated, geographically mapped and its diagnostic characteristics and taxonomic affinities are described. The new species can be recognised mainly by the presence of serial branches (branches from serial buds predominantly in the apical portion of the plant), the short internodes and oblique or erect leaves which partially overlap in dried specimens; the ovate to elliptic leaf blade with a golden brown velutinous indumentum, and the conical or bulbous bases of the glandular setiform trichomes, frequently darkened on young leaf margins and on the abaxial surface. Its conservation status is preliminarily assessed as Endangered, it occurs in Brazilian Cerrado (savanna vegetation), in the Jalapão region, state of Tocantins, North region of Brazil. Key Words: Brazilian flora, Malpighiales, taxonomy, Tocantins, Turneroideae.
Piriqueta velutina L.Rocha & Arbo sp. nov. ETYMOLOGY. The epithet “velutina” refers to the species’ indumentum. Lamarck Rocha, Maria Mercedes Arbo, Guilherme Medeiros Antar and Fabiane Rabelo da Costa Batista. 2024. Piriqueta velutina (Turneraceae, Passifloraceae s.l.): A New endangered Species from the Brazilian Cerrado. Kew Bull. DOI: 10.1007/s12225-023-10157-1 | ||||||
| 3:17a | [Mollusca • 2024] Pleurobranchaea britannica • First Occurrence of the Genus Pleurobranchaea Leue, 1813 (Heterobranchia: Nudipleura: Pleurobranchida) in British Waters, with the Description of A New Species
Abstract In the north-eastern Atlantic and Mediterranean Sea, the pleurobranchid genus Pleurobranchaea Leue, 1813 is represented by two species, Pleurobranchaea meckeli (Blainville, 1825) and Pleurobranchaea morosa (Bergh, 1892). The former is a well-known species distributed from northern Spain to Senegal and the Mediterranean Sea, while the second is a poorly-described species. In this contribution, species delimitation analyses (ABGD and COI/16S p-distances) identified a third undescribed Pleurobranchaea species from samples collected in south-western UK waters and the Gulf of Cadiz (SW Spain). This new species, Pleurobranchaea britannica sp. nov., is also supported by several morphological synapomorphies. The British specimens constitute the first occurrence of the genus Pleurobranchaea in UK waters. Key Words: Atlantic Ocean, Gulf of Cadiz, Mediterranean Sea, molluscan diversity, Pleurobranchaea britannica, Pleurobranchaeidae, southwest UK, systematics
Superorder Nudipleura Wägele & Willan, 2000 Order Pleurobranchida Gray, 1827 Superfamily Pleurobranchoidea Gray, 1827 Family Pleurobranchaeidae Pilsbry, 1896 Genus Pleurobranchaea Leue, 1813 Pleurobranchaea britannica sp. nov. Diagnosis: Body oval, large, translucent with a minute cream/ochre pigmentation. Some specimens with opaque white specks irregularly spread all over mantle, oral veil, gill and posterior region of the foot not covered by the mantle. Rhinophores with dark spots on the front and white ones on the back. Gill bipinnate, with 15–18 pairs of pinnules and smooth rachis. Caudal spur absent. Outermost radular teeth bicuspid. Seminal receptacle short; bursa copulatrix at the end of the vagina and directly fused to it. Etymology: The species name in Latin refers to the British waters where this species was initially found. Martina Turani, Leila Carmona, Peter J. Barry, Hayden L. Close, Ross Bullimore and Juan Lucas Cervera. 2024. First Occurrence of the Genus Pleurobranchaea Leue, 1813 (Pleurobranchida, Nudipleura, Heterobranchia) in British Waters, with the Description of A New Species. Zoosystematics and Evolution. 100(1): 49-59. DOI: 10.3897/zse.100.113707 | ||||||
| 9:01a | [Botany • 2024] Checklist of the Genus Ridsdalea (Rubiaceae: Gardenieae) in Vietnam with Description of the New Species Ridsdalea backanensis
Abstract The paper provides an identification key and an annotated list of all six species of the genus Ridsdalea J.T.Pereira & K.M.Wong (Rubiaceae, Gardenieae) recorded in the flora of Vietnam, along with data on their valid names, synonyms, types, and distribution. A new species, R. backanensis, discovered in the limestone area of Bac Kan Province (northern Vietnam), is described and illustrated. Detailed data on its characters, ecology, distribution, phenology, preliminary IUCN conservation status, and taxonomical notes are given. The newly discovered species is potentially interesting for cultivation as an ornamental tree that may be effectively used in garden and urban green architecture. Key words: Ba Be National Park, Bac Kan Province, endemism, flora of Vietnam, new species, plant diversity, plant taxonomy, Rothmannia
Ridsdalea backanensis C.H.Nguyen & Aver., sp. nov. Diagnosis: Ridsdalea backanensis differs from R. daweishanensis mainly in the smaller leaves, 7–11 cm long (vs. leaves 10–14 cm long in R. daweishanensis), the 1–3-flowered inflorescence (vs. inflorescences uniflorous), the much shorter pedicels, 3.5–7 mm long (vs. pedicels 20–25 mm long), the shorter subulate calyx lobes, 6.5–11 mm long (vs. calyx lobes narrowly oblanceolate, 14–16 mm long), the corolla outside sparsely hairy (vs. corolla outside glabrous), and the oblanceolate anthers, 2–3 mm wide (vs. anthers linear, about 1.5 mm wide). Etymology: The species is named after the area of origin (Bac Kan Province, northeastern Vietnam). Khoa Van Phung, Leonid V. Averyanov, Tatiana V. Maisak, Ludmila I. Krupkina, Hai Xuan Cao and Cuong Huu Nguyen. 2024. Checklist of the Genus Ridsdalea (Rubiaceae, Gardenieae) in Vietnam with Description of the New Species R. backanensis. PhytoKeys. 239: 1-12. DOI: 10.3897/phytokeys.239.113017 | ||||||
| 9:02a | [Invertebrate • 2024] Pectinereis strickrotti • A remarkable New deep-sea nereidid (Annelida: Nereididae) with gills
Abstract Nereidid polychaetes are well known from shallow marine habitats, but their diversity in the deep sea is poorly known. Here we describe an unusual new nereidid species found at methane seeps off the Pacific coast of Costa Rica. Specimens of Pectinereis strickrotti gen. nov., sp. nov. had been observed dating back to 2009 swimming just above the seafloor at ~1,000 m depth but were not successfully captured until 2018. Male epitokes were collected as well as a fragment of an infaunal female found in a pushcore sample. The specimens were all confirmed as the same species based on mitochondrial COI. Phylogenetic analyses, including one based on available whole mitochondrial genomes for nereidids, revealed no close relative, allowing for the placement of the new species in its own genus within the subfamily Nereidinae. This was supported by the unusual non-reproductive and epitokous morphology, including parapodial cirrostyles as pectinate gills, hooked aciculae, elfin-shoe-shaped ventral cirrophores, and elongate, fusiform dorsal ligules emerging sub-medially to enlarged cirrophores. Additionally, the gill-bearing subfamily Dendronereidinae, generally regarded as a junior synonym of Gymnonereidinae, is reviewed and it is here reinstated and as a monogeneric taxon.
Family NEREIDIDAE de Blainville, 1818 Subfamily NEREIDINAE de Blainville, 1818 Pectinereis Villalobos-Guerrero, Huč, Tilic, Hiley & Rouse gen. nov. Diagnosis: Prostomial anterior region entire. Esophageal caeca absent. Anterior parapodial cirrostyles as comb-like gills. Dorsal cirrostyles attached sub-distally and dorsal ligule attached sub-medially to expanded cirrophores. Notopodial prechaetal, neuropodial postchaetal and inferior lobes present. First two chaetigers without notoacicula. Neuropodial spinigers and falcigers very long, homogomph. Epitoke males divided into four body regions, with distally-bilamellated dorsal cirrophore, elfin-shoe shaped ventral cirrophore, pre-pygidial hooked aciculae, and ensiform spinigers. Etymology: This genus is named by combining the Latin word pectinis (= ‘comb’) with the name of the type genus of the family, Nereis. The name emphasizes the pectinate (i.e., comb-like) parapodial cirrostyles (gills) in the first anterior chaetigers formed by digitiform filaments. The gender is feminine, as the stem genus-group name. Pectinereis strickrotti Villalobos-Guerrero, Huč, Tilic, Hiley & Rouse sp. nov. Etymology: The species is named in honor of Bruce Strickrott, Group Manager and lead submersible pilot of the DSV Alvin (Woods Hole Oceanographic Institution), who chased these worms for many years before finally skillfully succeeding in their capture. Tulio F. Villalobos-Guerrero, Sonja Huč, Ekin Tilic, Avery S. Hiley and Greg W. Rouse. 2024. A remarkable New deep-sea nereidid (Annelida: Nereididae) with gills. PLoS ONE. 19(3): e0297961. DOI: 10.1371/journal.pone.0297961 | ||||||
| 9:32a | [Entomology • 2024] Clavicornaltica mataikanensis • A New, unusually large, Clavicornaltica Scherer, 1974 (Coleoptera: Chrysomelidae: Galerucinae) flea beetle from Borneo, described and sequenced in the field by citizen scientists
Abstract Background: The genus Clavicornaltica Scherer 1974 consists of very small, soil-dwelling flea beetles in South, Southeast and East Asia. Due to their diminutive size and morphological similarities, very little is known about their ecology and taxonomical diversity. It is likely that further studies will reveal this genus to be much more speciose than the 30 species currently recognised. New information: A new species of Clavicornaltica from Brunei Darussalam is described, C. mataikanensis Otani et al., sp. nov. This is the second species of this genus recorded from Ulu Temburong National Park. Keywords: Lowland Dipterocarp rainforest, citizen science, new species, humicole beetles, taxonomy tourism
Clavicornaltica mataikanensis Otani, Bertoli, Lucchini, Boin, Ellis, Friedrich, Jacquot, Kountouras, Lim, Nigro, Otani, Syafi’ie, Tan, Grafe, Cicuzza, Njunjić & Schilthuizen sp. nov. Diagnosis: Body dark reddish-brown, large, length ca. 2.0 mm, width ca. 1.8 mm, ovoid and convex, nearly hemispherical. Antennae and visible parts of legs yellowish-brown when viewed dorsally. Head slightly lighter than pronotum and elytra. Eyes ca. 1/7 the width of the head in dorsal view. Scutellum small, triangular. Elytra with punctate rows, deeper laterally becoming shallower dorsally (Figs 2, 3). Spermatheca of characteristic shape (Fig. 4). Male unknown. Etymology: As is customary on our Taxon Expeditions, the name for the new species was decided during a voting session on the last night of the expedition. The proposal which won the most votes was to name it after the stream that runs through the small ravine where the specimens were found, namely Sungai (stream) Mata Ikan. We therefore decided to name it Clavicornaltica mataikanensis sp. nov. Due to the large number of authors, following Recommendation 51C of the Code (ICZN 1999), the species can be referred to as Clavicornaltica mataikanensis Otani et al., 2024, provided the full citation of this publication appears in the bibliography or elsewhere in the referring work. Sean Otani, Luca Bertoli, Filippo Lucchini, Tom P. G. van den Beuken, Desanne Boin, Lehman Ellis, Holm Friedrich, Brittany Jacquot, Sotiris Kountouras, Sarah Yu Rou Lim, Eleonora Nigro, Syafi’ie Su’eif, Wei Harn Tan, Ulmar Grafe, Daniele Cicuzza, Massimo Delledonne, Iva Njunjić and Menno Schilthuizen. 2024. A New, unusually large, Clavicornaltica Scherer, 1974 flea beetle from Borneo, described and sequenced in the field by citizen scientists (Coleoptera, Chrysomelidae, Galerucinae). Biodiversity Data Journal. 12: e119481. DOI: 10.3897/BDJ.12.e119481 |
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