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Thursday, July 25th, 2024
| Time | Event | ||||||
| 10:11a | [Entomology • 2020] Bulasconotus scaccarius • A New Species of cylindrical Bark Beetle (Coleoptera: Zopheridae: Colydiinae) from Vanuatu establishes in Hawaii
Abstract We describe Bulasconotus scaccarius sp. nov., a new species of cylindrical bark beetle (Zopheridae: Colydiinae: Synchitini), elevating the number of described species in its genus to two. Despite discovering this species in Hawaii, we suspect, based on collections and survey data, that it is endemic to the South Pacific archipelago of Vanuatu and has only recently arrived in Hawaii. Evidence of the diet of closely related genera indicates that the new species may be a predator of ambrosia beetles (Curculionidae: Scolytinae), conceivably posing a risk to those that are endemic to Hawaii. Keywords: Coleoptera, Colydiidae, invasive species, Melanesia, New Hebrides, Oahu, Tenebrionoidea
Bulasconotus scaccarius sp. nov. Etymology. The specific epithet is the adjective form of the nominative singular noun scaccarium, meaning a chessboard, in reference to the chequered pattern on the elytra. This name thereby conforms to article 11.9.1.1 of the International Code of Zoological Nomenclature. Because the adjective suffix agrees with the masculinity of the generic name, the binomial name also conforms to article 31.2 even though the eponym is neuter. Jared Bernard, Conrad P. D. T. Gillett. 2020. A New Species of cylindrical Bark Beetle (Zopheridae: Colydiinae) from Vanuatu establishes in Hawaii. Zootaxa. 4809(3); 593–599. DOI: doi.org/10.11646/zootaxa.4809.3.12 | ||||||
| 11:41a | [Paleontology • 2024] Jurassic Fossil Juvenile reveals prolonged Life History in early Mammals
Abstract Living mammal groups exhibit rapid juvenile growth with a cessation of growth in adulthood. Understanding the emergence of this pattern in the earliest mammaliaforms (mammals and their closest extinct relatives) is hindered by a paucity of fossils representing juvenile individuals. We report exceptionally complete juvenile and adult specimens of the Middle Jurassic docodontan Krusatodon, providing anatomical data and insights into the life history of early diverging mammaliaforms. We used synchrotron X-ray micro-computed tomography imaging of cementum growth increments in the teeth to provide evidence of pace of life in a Mesozoic mammaliaform. The adult was about 7 years and the juvenile 7 to 24 months of age at death and in the process of replacing its deciduous dentition with its final, adult generation. When analysed against a dataset of life history parameters for extant mammals5, the relative sequence of adult tooth eruption was already established in Krusatodon and in the range observed in extant mammals but this development was prolonged, taking place during a longer period as part of a significantly longer maximum lifespan than extant mammals of comparable adult body mass (156 g or less). Our findings suggest that early diverging mammaliaforms did not experience the same life histories as extant small-bodied mammals and the fundamental shift to faster growth over a shorter lifespan may not have taken place in mammaliaforms until during or after the Middle Jurassic.    Krusatodon Elsa Panciroli, Roger B. J. Benson, Vincent Fernandez, Nicholas C. Fraser, Matt Humpage, Zhe-Xi Luo, Elis Newham and Stig Walsh. 2024. Jurassic Fossil Juvenile reveals prolonged Life History in early Mammals. Nature. DOI: doi.org/10.1038/s41586-024-07733-1 | ||||||
| 2:25p | [Botany • 2024] Catasetum queirozii (Orchidaceae: Catasetinae) • A New Species from the Brazilian Amazon
ABSTRACT This study presents a new orchid species of the genus Catasetum belonging to the group of species with symmetrical and parallel antennae. It was found in terra-firme and floodplain forests in the Brazilian states of Amazonas and Pará. We provide a formal description of the new species, images, and notes on distribution, habitat, phenology, flower visitors and preliminary conservation status. We compare it with C. cristatum and C. barbatum, both sympatric and morphologically most similar to the new species. It was preliminarily classified in the Endangered (EN) category according to IUCN criteria based on the extent of occurrence, area of occupation, number of occurrence locations and the risks that the known populations are exposed to (deforestation and predatory collection). KEYWORDS: Amazonas; dense ombrophilous forest; epiphyte; orchids; Pará; taxonomy
Catasetum queirozii D.R.P.Krahl, Krahl, Cantuária & J.B.F.Silva, sp. nov. Diagnosis: Catasetum queirozii is similar to C. cristatum and C. barbatum, however it differs in its petals with a narrowly elliptical shape and a narrower lip, entire, oblong with a sparsely ciliated margin, with a globular concentration of fimbriae of thick consistency at the apex and the glabrous proximal surface. Etymology: The specific epithet is given in honor to the agronomist, orchidist and orchid enthusiast Sérgio Alberto Queiroz Costa who has been developing an admirable research work on orchids in the Amazon. He was also the first to call our attention to the true identity of the taxon proposed in this paper. Dayse Raiane Passos KRAHL, Philippe SCHMAL, Guy CHIRON, João Batista Fernandes da SILVA, Amauri Herbert KRAHL and Patrick de Castro CANTUÁRIA. 2024. Catasetum queirozii (Orchidaceae: Catasetinae): A New Species from the Brazilian Amazon. Acta Amazonica. 54(1) DOI: doi.org/10.1590/1809-4392202301801 Catasetum queirozii (Orchidaceae: Catasetinae): uma nova espécie da Amazônia brasileira RESUMO: Este estudo apresenta uma nova espécie de orquídea do gênero Catasetum, do grupo de espécies cujas antenas são simétricas e paralelas. Foi encontrada em florestas de terra-firme e igapó nos estados do Amazonas e Pará, Brasil. Fornecemos uma descrição formal da nova espécie, imagens e comentários referentes à distribuição, habitat, fenologia, visitantes florais e estatus de conservação. A comparamos com C. cristatum e C. barbatum, que ocorrem em simpatria e são morfologicamente mais semelhantes à nova espécie. Ela foi preliminarmente classificada na categoria Em Perigo (EN) segundo os critérios da UICN, com base na extensão de ocorrência, área de ocupação, número de localidades de ocorrência e os riscos a que as populações conhecidas estão expostas (desmatamento e coleta predatória). PALAVRAS-CHAVE: Amazonas; floresta ombrófila densa; epífita; orquídeas; Pará; taxonomia | ||||||
| 2:55p | [Botany • 2024] Peliosanthes meghalayensis (Asparagaceae) • A New Species from Meghalaya, NE India
Highlights • Peliosanthes meghalayensis, a new species from Wari Chora gorge in Meghalaya, NE India, described and illustrated. • Similar to P. pumila from Khasia, NE India, but differs chiefly by knobby rhizome, broader leaf blades, closer transversal veinlets, slightly larger cernuous flowers, and pistils with 6 distinct ridges. • P. subspicata, a rare plant is rediscovered in Assam, NE India, known only by old collections made in NE India and Bangladesh in the 19th century. • Supplemental description and illustration based on living collections provided. • P. bipiniana treated as conspecific with P. subspicata. Abstract Peliosanthes meghalayensis, a new species from Wari Chora gorge in Meghalaya, NE India, is described and illustrated. It is similar to P. pumila from Khasia, NE India, in its small habit and having flowers fewer than 10, but differs chiefly by the knobby rhizome, broader leaf blades with closer transversal veinlets, slightly larger cernuous flowers, and pistils with 6 distinct ridges. On the other hand, in Assam, NE India, we rediscovered P. subspicata, which had been known only by old collections made in NE India and Bangladesh in the 19th century. We supplementarily describe and illustrate it based on living collections. We treated P. bipiniana as conspecific with P. subspicata. Keywords: Peliosanthes, Northeast India, New species, Taxonomy, Morphology, Synonymy   Peliosanthes meghalayensis D.Borah & N.Tanaka, sp. nov.  Dipankar Borah and Noriyuki Tanaka. 2024. Peliosanthes meghalayensis (Asparagaceae), A New Species from Meghalaya, NE India, and synonymization of P. bipiniana with P. subspicata. Flora. 317, 152569. DOI: doi.org/10.1016/j.flora.2024.152569 |
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