[Most Recent Entries] [Calendar View]
Tuesday, June 11th, 2024
| Time | Event | ||||||||
| 2:55a | [Botany • 2021] Aconitum sikkimensis (Ranunculaceae) • A New Species from Sikkim, Indian Eastern Himalaya
Abstract Aconitum sikkimensis, a new species from Sikkim in the Indian Eastern Himalaya, is described and illustrated in this article. A. hookeri is morphologically closest species to the new species and it resembles in colour of the flower and the shape of the lateral sepals. However, it differs in plant height (A. sikkimensis being taller than A. hookeri), the shape of leaf and degree of dissection in the lamina, number of bracts and their shape and size, length of petiole, semi-orbicular upper sepal (vs. obliquely erect), distinctly curved, pubescent petals (vs. straight, glabrous petals) having spathulate lips (vs. obovate), and well-developed staminal pilose hairs and teeth (vs. non-developed, glabrous). Based on population data, the species was assigned the threat status of ‘Critically Endangered’ following IUCN criteria. Keywords: Aconitum, A. sikkimensis sp nov., Indian Eastern Himalaya, morphology, threat status, critically endangered, Eudicots   Aconitum sikkimensis Harsh Singh, Aditya Pradhan & D. Adhikari sp. nov. Diagnosis:—This new species closely resembles A. hookeri Stapf but is different in lesser dissected leaves, curved pilose petals with spathulate lip, and well-developed pilose staminal teeth. Harsh Singh, Aditya Pradhan, Dibyendu Adhikari, Arun Chettri and Saroj Kanta Barik. 2021. A New Species of Aconitum (Ranunculaceae) from Indian Eastern Himalayan State of Sikkim. Phytotaxa. 484(2); 207–216. DOI: 10.11646/phytotaxa.484.2.5  | ||||||||
| 3:13a | [Botany • 2021] Epidendrum lufinorum (Orchidaceae) • A New Species of pendulous habit from Peru
Abstract A new species of Epidendrum L. from northern Peru is described, illustrated, and compared with related species. This new species belongs to the Laxicaule Group and shares morphological characteristics with Epidendrum laxicaule D.E. Benn & Christenson but differs in the shape and length of the dorsal sepal; the shape of the petals and the lip, ribs position of the lip, shape of the vesicle formed between the ovary and the column as well as the section of the stem. Keywords: Cajamarca, endemic, Epidendroideae, epiphyte, neotropic, San Ignacio
Epidendrum lufinorum Ocupa & Hágsater, sp. nov. Similar to Epidendrum laxicaule D.E.Benn & Christenson, but differs in having smaller dorsal sepal (i.e. 2.4 × 0.4 cm vs. 3.2 × 0.6 cm) which is oblong-oblanceolate (vs. narrowly oblanceolate), with an obtuse apex (vs. acute), the linear and obtuse petals (vs. narrowly linear-lanceolate and acuminate), lip transversely cordate (vs. transverse), disc with 5 parallel and central ribs (vs. 5 parallel ribs projecting distally), a gibbous vesicle (vs. globose) and the stem section terete (vs. elliptic). Eponymy: The epithet is an acronym formed by the first two letters of the names Luis (1966–), Fiorella (1993–) and Noemí (1970–), parents and sister of the first author, to whom he wishes to dedicate this species. Luis Ocupa Horna, Eric Hágsater and Marco M. Jiménez. 2021. A New Species of Epidendrum L. (Orchidaceae) of pendulous habit from Peru. PhytoKeys. 184: 55-66. DOI: 10.3897/phytokeys.184.70844 Abstract: Se describe, ilustra y compara una nueva especie de Epidendrum L. del norte de Perú con otras especies relacionadas. Esta nueva especie pertenece al Grupo Laxicaule y comparte características morfológicas con Epidendrum laxicaule D.E. Benn & Christenson pero difiere en la forma y longitud del sépalo dorsal; la forma de los pétalos y del labio, la posición de las costillas del labio, la forma de la vesícula formada entre el ovario y la columna así como la sección del tallo. | ||||||||
| 3:27a | [Botany • 2016] Wuacanthus microdontus • A New Chinese Endemic Genus segregated from Justicia (Acanthaceae)
Abstract A new genus, Wuacanthus Y.F. Deng, N.H. Xia & H. Peng (Acanthaceae), is described from the Hengduan Mountains, China. Wuacanthus is based on Wuacanthus microdontus (W.W.Sm.) Y.F. Deng, N.H. Xia & H. Peng, originally published in Justicia and then moved to Mananthes. The new genus is characterized by its shrub habit, strongly 2-lipped corolla, the 2-lobed upper lip, 3-lobed lower lip, 2 stamens, bithecous anthers, parallel thecae with two spurs at the base, 2 ovules in each locule, and the 4-seeded capsule. Phylogenetic analyses show that the new genus belongs to the Pseuderanthemum lineage in tribe Justicieae. Wuacanthus is closely related to Pseuderanthemum but differs from the latter by its shorter corolla tube and two minute spurs at the base of each anther-theca. W. microdontus is assessed with the status EN B2ab (iii) based on the IUCN Red List Categories and Criteria. Keywords: Acanthaceae, Jinshajiang Valley, Justicia, Justicieae, Pseuderanthemum lineage, Wuacanthus
Wuacanthus Y.F. Deng, N.H. Xia & H. Peng, gen. nov. Type: Wuacanthus microdontus (W.W.Sm.) Y.F. Deng, N.H. Xia & H. Peng.
Yunfei Deng, Chunming Gao, Nianhe Xia and Hua Peng. 2016. Wuacanthus (Acanthaceae), A New Chinese Endemic Genus segregated from Justicia (Acanthaceae). Plant Diversity. DOI: 10.1016/j.pld.2016.11.010 | ||||||||
| 4:02a | [Botany • 2023] Apostasia fujianica (Orchidaceae: Apostasioideae) • A New Species from Fujian, China
Abstract After examining morphological, molecular and genome-size evidence, we here describe a new orchid species, Apostasia fujianica, from Fujian, China. Morphological comparisons indicated that A. fujianica is similar to A. shenzhenica and A. nipponica, whereas the former displayed distinct differences in habit, roots, leaves, inflorescences and fruit shape and size. Apostasia fujianica (341 Mb) has a smaller genome size than A. shenzhenica (471 Mb), A. ramifera (366 Mb) and A. fogangica (931 Mb). Molecular analyses from combined nuclear (ITS, Xdh, naD1) and plastid (matK, rbcL, psbA-trnH, trnL-trnF and trnS-trnG) datasets indicated that A. fujianica is sister to A. shenzhenica. These results support the status of A. fujianica as a new species, distinguished in many aspects from A. shenzhenica, A. ramifera and A. nipponica. Keywords: Apostasioideae, Asian orchids, Genome size, Molecular phylogenetics, Nuclear C-value, Monocots   Apostasia fujianica Y. Li & S. Lan, sp. nov. YuanYuan Li, Liang Ma, Ding-Kun Liu, Xue-Wei Zhao, Diyang Zhang, Shijie Ke, Gui-Zhen Chen, Qinyao Zheng, Zhong-Jian Liu and Siren Lan. 2023. Apostasia fujianica (Apostasioideae, Orchidaceae), A New Chinese Species: evidence from morphological, genome size and molecular analyses. Phytotaxa. 583(3); 277–284. DOI: 10.11646/phytotaxa.583.3.6 | ||||||||
| 9:48a | [Diplopoda • 2024] Bayaria gen. nov. • The Millipede Family Striariidae Bollman, 1893. IX. The Identity of Striaria californica Cook, 1899, and the New Genus Bayaria for Striaria nana Loomis, 1936, with A Key to Genera and an annotated Checklist of the St
Abstract The identity of Striaria californica Cook, described in 1899 from a single female, is established on the basis of additional specimens collected by Cook in 1929 and determined to be that species by Loomis (1936) as well as specimens from the San Francisco Bay region, likely to be from near the original collection locality. We propose Amplaria californica (Cook, 1899) new combination. A new genus, Bayaria Shear & Marek n. gen., is established for Striaria nana Loomis, 1936 Bayaria nana (Loomis, 1936) new combination. Striaria carmela Chamberlin, 1947, is a junior synonym of Bayaria nana. A key to the 16 genera of Striariidae and an annotated checklist of the 52 species are provided. Myriapoda, new taxa, new combinations, Striariinae, Trisariinae, California, Amplaria  William A. Shear and Paul E. Marek. 2024. The Millipede Family Striariidae Bollman, 1893. IX. The Identity of Striaria californica Cook, 1899, and the New Genus Bayaria for Striaria nana Loomis, 1936, with A Key to Genera and an annotated Checklist of the Striariidae (Diplopoda, Chordeumatida, Striarioidea). Zootaxa. 5463(4); 524-544. DOI: 10.11646/zootaxa.5463.4.4 | ||||||||
| 10:59a | [Ichthyology • 2024] Austrolebias ayoreode • Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and Description of A New Species of the Genus from the upper Paraguay River Basin
Abstract Austrolebias accorsii is redescribed based on specimens from type-locality, nearby temporary pools, and other locations within the same hydrologic unit. Additionally, a novel Austrolebias species is described, exclusively found in two temporary waterbodies in “Abayoy”, a unique vegetation type situated in the transitional zone between the Dry Chaco, Chiquitano Dry Forest, and Pantanal Flooded Savannas ecoregions in southeastern Bolivia, bordering Paraguay, where the last voluntarily isolated indigenous people outside the Amazon in America reside. Diagnostic characters for both species are presented. Within Austrolebias two species groups are recognized with different morphological characters, geographical distribution, and ecological traits of their habitats. Furthermore, we suggest the usage of median and interquartile range rather than mean and standard deviation to analyze morphometric and meristic data of rivulids, given the typically non-Gaussian distribution of this data. Keywords: Chaco; Killifish; Seasonal fish; Taxonomy; Temporary water bodies
Austrolebias ayoreode, new species Diagnosis. Austrolebias ayoreode males differs from all congeners, except A. accorsii, A. ephemerus,and A. vandenbergi, by presence of 1–3 transverse rows of scales on basal anterior and median portion of anal fin. Males of A. ayoreode can be distinguished from A. accorsii, A. ephemerus, A. melanoorus, A. queguay, and A. vandenbergi by presence of whitish to pale yellowish dots on flanks usually vertically aligned in unarranged rows (vs. absent in A. accorsii; mostly coalesced in vertical bars in A. ephemerus, A. melanoorus, and A. queguay; absent or, when rarely present, sparse and scattered in A. vandenbergi); from A. accorsii and A. vandenbergi by urogenital papilla mostly ... Etymology. The name ayoreode is an eponym conferred in reference to the indigenous Ayoréode people, who historically occupied vast expanses of the northern Dry Chaco, and of whom a few groups still persist in the area of the type-locality of this species, standing as the last indigenous people in voluntary isolation outside of the Amazon in the Americas. Through this nomenclature, we intent to perpetuate the memory of the existence of the Ayoréode and emphasize the imperative of preserving their ancestral territory, which also is the habitat of the species described herein.  Heinz Arno Drawert and Carlos Ergueta. 2024. Redescription of Austrolebias accorsii (Cyprinodontiformes: Rivulidae) and Description of A New Species of the Genus from the upper Paraguay River basin. Neotrop. ichthyol. 22 (2); DOI: 10.1590/1982-0224-2024-0001 | ||||||||
| 3:55p | [Paleontology • 2024] Torukjara bandeirae & Caiuajara dobruskii • A Taxonomic Note on the tapejarid Pterosaurs from the Pterosaur Graveyard Site (Caiuá Group, ?Early Cretaceous of Southern Brazil): Evidence for the Presence of Two Species
ABSTRACT The Caiuá Group (Cretaceous of Southern Brazil) is famous for the Pterosaur Graveyard site, a location that has yielded hundreds of tapejarid specimens, among other taxa. Previous works had already presented various specimens of Pterosaur Graveyard (PG) tapejarids, reporting on several cranial elements showing substantial anatomical variations. These variations have been interpreted as intraspecific in nature, with all tapejarid specimens having been attributed to a single species, Caiuajara dobruskii. The present contribution reassesses the morphological diversity found in PG tapejarid specimens. Evidence is provided for the interpretation of several variations as interspecific in nature, particularly regarding rostral, palatal, occipital, and third cervical morphology. The present data indicate a segregation of the PG tapejarid specimens between two consistent morphotypes, which are interpreted here as two distinct, coexisting species: Caiuajara dobruskii and Torukjara bandeirae gen. et sp. nov. KEYWORDS: Pterosauria, Tapejaridae, taxonomy, osteology, morphological variation, Caiuá Group    Rodrigo V. Pêgas. 2024. A Taxonomic Note on the tapejarid Pterosaurs from the Pterosaur Graveyard Site (Caiuá Group, ?Early Cretaceous of Southern Brazil): Evidence for the Presence of Two Species. Historical Biology: An International Journal of Paleobiology. DOI: 10.1080/08912963.2024.2355664 |
| << Previous Day |
2024/06/11 [Calendar] |
Next Day >> |