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Saturday, March 30th, 2024
| Time | Event | ||||||||
| 1:05a | [Botany • 2024] Octomeria jimenezii (Orchidaceae: Pleurothallidinae) • A New Species of Octomeria from Ecuador
Abstract A new species of Octomeria was found during an orchid research expedition in the southern Ecuadorian Amazon. Octomeria jimenezii is described and illustrated, and information on its distribution, habitat and conservation status is provided. The newly proposed taxon is morphologically similar to O. pacii, from which it differs by the lower lateral lobes, with an obtuse to subacute angle to the anterior margin. Taxonomy, Octomeria pacii, Southern Ecuador, Monocots  Leisberth Vélez-Abarca, Gabriel A. Iturralde, Henry X. Garzón, Diego Gutiérrez del Pozo and Luis E. Baquero. 2024. A New Species of the Genus Octomeria (Orchidaceae: Pleurothallidinae) from Ecuador. Phytotaxa. 637(1); 106-112. DOI: 10.11646/phytotaxa.637.1.8 | ||||||||
| 1:08a | [Botany • 2024] Ajania flavida (Asteraceae: Anthemideae) • A distinct New Species from southwestern China
Abstract Ajania flavida, a new species from western Sichuan and eastern Xizang, China, is described and illustrated. It is readily assigned to A. sect. Ajania owing to its straw-colored, glossy involucres and marginally whitish scarious phyllaries. Within the section, it is distinct in being a shrub of 1−2 m in height, and in having creamy yellow florets. It is superficially similar to A. ramosa in A. sect. Phaeoscyphus, but can easily be distinguished by, among other characters, the plant height, color of the florets and margins of the phyllaries. In addition, we provide a distribution map of the new species. Key words: Compositae, taxonomy, Yangtze River
Ajania flavida Long Wang, sp. nov. Diagnosis: Ajania flavida is distinct in A. sect. Ajania in being shrubs of 1−2 m in height and having creamy yellow florets. It is superficially similar to A. ramosa in A. sect. Phaeoscyphus, but can be easily distinguished by the plant habit (shrub vs. subshrub), plant height (1−2 m vs. 40−60 cm), leaf division (2-pinnatisect vs. 1(−2)-pinnatisect), size of the involucres (ca. 3 mm vs. 4−5 mm in diameter), color (creamy yellow vs. yellow) of the florets and margins (whitish scarious vs. brown scarious) of the phyllaries. Etymology: The specific epithet ‘flavida’ refers to the creamy yellow florets of this new species. Vernacular name: 川藏亚菊 (Chinese pinyin: chuān zàng yà jú). Xiao-Rui Chi, Hai-Song Wu and Long Wang. 2024. Ajania flavida (Asteraceae, Anthemideae), A distinct New Species from southwestern China. PhytoKeys. 239: 205-213. DOI: 10.3897/phytokeys.239.119028 | ||||||||
| 1:37a | [Botany • 2024] Syzygium crystalliferum (Myrtaceae) • A New Tree Species from Carranglan, Nueva Ecija, Philippines
A new species of Syzygium (Myrtaceae) from Carranglan, Nueva Ecija, Luzon, Philippines – Syzygium crystalliferum is described and illustrated here as species new to science. Syzygium crystalliferum is similar to S. purpuriflorum by having sessile leaves, cordate base, terminal inflorescence, large flowers and free perianth lobes. However, it is unique in pustules in dried leaves and inflorescence, and having chartaceous-coriaceous leaf texture, coarser secondary leaf venation, individual flowers borne on a distinct pedicel, shorter hypanthium, smaller calyx lobes, and red fruit turning deep purple when ripe. Preliminary assessment of conservation status following IUCN guidelines assign S. crystalliferum as Critically Endangered (CR). This discovery makes the first addition to Philippine Syzygium in over 70 years since Elmer D. Merrill's last taxonomic work on the genus. Additionally, a lectotype for the basionym Eugenia purpuriflora is designated. Keywords: Luzon Island, Myrtales, Pantabangan–Carranglan watershed forest reserve, woody plants   Syzygium crystalliferum L.Udasco, A.L.Garrino, Aumentado, M.G.Rule and Mansibang sp. nov. Jayson A. Mansibang, Leonardo C. Udasco, Abigail L. Garrino, Jamie Ann M. Aumentado, Mark Gregory Q. Rule and John Patykowski. 2024. Syzygium crystalliferum (Myrtaceae), A New Tree Species from Carranglan, Nueva Ecija, Philippines and Lectotypification of Eugenia purpuriflora Elmer. Nordic Journal of Botany. DOI: 10.1111/njb.04227  | ||||||||
| 1:37a | [Botany • 2024] Phanera roseoalba • A New Species and A New Record of Phanera (Fabaceae) in Laos, with A Lectotypification and A New Combination for P. involucrans
Abstract A new species of Phanera (Fabaceae), P. roseoalba from the Bolaven Plateau, southern Laos, is described and illustrated, along with its vernacular name and preliminary conservation status. In addition, a distribution of P. nervosa is recorded in Laos for the first time, and a second-step lectotypification is made for Bauhinia involucrans, with a proposal of its new combination P. involucrans. Caesalpinioideae, Flora, Indochina, taxonomy, Eudicots   Takenori Yamamoto, Phetlasy Souladeth, Khammon Soutakone, Deuanta Kongxaisavath and Shuichiro Tagane. 2024. A New Species and A New Record of Phanera (Fabaceae) in Laos, with A Lectotypification and A New Combination for P. involucrans. Phytotaxa. 640(2); 81-89. DOI: 10.11646/phytotaxa.640.2.1 | ||||||||
| 1:37a | [Botany • 2024] Dahlia gypsicola (Asteraceae: Coreopsideae) • Another New Species of the Genus Dahlia: are we close to knowing its total diversity?
Abstract Background and Aims: The genus Dahlia is culturally and economically appreciated. The botanical explorations in richness areas for Dahlia still provide taxonomic novelties. The aims of this communication are to describe the new species D. gypsicola, and compare it morphologically and ecologically with D. calzadana, providing a distribution map, illustrations, an identification key for Dahlia of the Cañada-Mixteca biocultural region in Oaxaca, Mexico, and a species accumulation analysis. Methods: Our study was based on field exploration, herbarium material revision, and analysis of living collections. The conservation status was determined based on range size, and criteria and categories of the IUCN Red List. To measure the sampling effort, a predictive species richness analysis was calculated considering 41 taxa of Dahlia and 2297 herbarium records collected between 1791-2021. Key results: Dahlia gypsicola is a member of Dahlia section Dahlia, morphologically related to D. calzadana. It differs by the herbaceous habit, semi-succulent leaves and stems, smaller petioles and capitulum, more capitula per synflorescence, and fewer disk florets per capitulum. Moreover, both species are allopatric and do not share ecological preferences and phenology. The category of Critically Endangered (CR B1a) is proposed for D. gypsicola, and Endangered (EN B1a) for D. calzadana. The species prediction richness shows that the number of known Dahlia species is almost complete: the inventory is approaching 95% and the predicted number of species is close to 43. Conclusions: A complete knowledge of the diversity in Dahlia could enhance plant breeding programs with economic and cultural impacts, because the possibilities of generating new cultivars are many. It is recommended to continue the explorations and increase botanical collections; undescribed species may exist where gypsophyte centers of endemism overlap with richness areas of Dahlia. Keywords: Balsas Basin, gypsicolous flora, Santiago Juxtlahuaca, Sierra Madre del Sur, Tehuacán-Cuicatlán Valley
Dahlia gypsicola J. Reyes, Ortiz-Brunel & Art. Castro, sp. nov. Dahlia gypsicola is similar to D. calzadana but differs by its herbaceous habit, 0.5-0.95 m tall (vs. subshrub, 0.4-1.5 m tall); semi-succulent leaves and stems (vs. succulent); simple leaves 9.5-15 × 2-5.5 cm, obtuse, serrate and glabrous margins, petiole 2.5-7 cm long (vs. (2.2-)9-15 × 3-9.5 cm, often slightly hastate, crenate-serrate and ciliate margins, petioles (4-)6.1-9.5 cm long); trisected leaves 10-22 × 3.5-5.5 cm, petiole 4-6 cm long, basal segments 2-3 × 1-2 cm, terminal segment 4.8-5.5 × 2-2.5 cm, petiolule 1-2 cm long (vs. (11-)16-23 × 11-17 cm, petiole 7-11 cm long, basal segments 5-9.5 × 3-5.3 cm, terminal seg-ment 6.5-14.8 × 4-7.4 cm, petiolule 1-4 cm long); synflorescence (1-)3-9 capitula (vs. 1-3); capitulum 2-4 cm wide across the extended rays (vs. 4.5-7.5 cm); disk florets 36-46, funnel-shaped (vs. 40-67, tubular). Etymology: the name refers to the gypsum soil substrate upon which the species grows, an uncommon habitat for Dahlia. Jerónimo Reyes-Santiago, Juan Pablo Ortiz-Brunel, Isaac H. Lichter-Marck and Arturo Castro-Castro. 2024. Another New Species of the Genus Dahlia (Asteraceae, Coreopsideae): are we close to knowing its total diversity? Acta Botanica Mexicana. 128: e1924. DOI: 10.21829/abm131.2024.2270  ¡Descubren en Oaxaca otra especie nueva Dahlia! ¡Flor nacional de México! Resumen: Antecedentes y Objetivos: El género Dahlia es cultural y económicamente apreciado. Las exploraciones botánicas en áreas de riqueza para Dahlia siguen aportando novedades taxonómicas. Los objetivos de esta comunicación son describir a la nueva especie D. gypsicola, y compararla morfológica y ecológicamente con D. calzadana, proveer un mapa de distribución, ilustraciones, una clave de identificación para Dahlia de la región biocultural Cañada-Mixteca en Oaxaca, México, y análisis de acumulación de especies. Métodos: Nuestro estudio se basó en exploraciones de campo, revisión de especímenes de herbario y análisis de colecciones vivas. Se determinó el estado de conservación considerando el área de distribución y criterios y categorías de la Lista Roja de la UICN. Para medir el esfuerzo de muestreo se realizó un análisis predictivo de riqueza considerando 41 especies de Dahlia y 2297 registros de herbario recolectados entre 1791-2021. Resultados clave: Dahlia gypsicola es miembro de Dahlia sección Dahlia; relacionada morfológicamente con D. calzadana. Se diferencia por el hábito herbáceo, hojas y tallos semisuculentos, peciolos y capítulos más pequeños, más capítulos por sinflorescencia y menos flores del disco por capítulo. Además, ambas especies son alopátricas y no comparten preferencias ecológicas ni fenología. Se propone la categoría En Peligro Crítico (CR B1a) para D. gypsicola y En Peligro (EN B1a) para D. calzadana. Los predictores de riqueza muestran que el número de especies conocidas de Dahlia está casi completo: el inventario se acerca al 95% y el número previsto de especies es cercano a 43. Conclusiones: Un conocimiento completo de la diversidad de Dahlia podría potenciar programas de fitomejoramiento con impactos económicos y culturales, porque las posibilidades de generar nuevos cultivares son amplias. Se recomienda continuar explorando e incrementar las colecciones botánicas, porque pueden existir especies no descritas donde los centros de endemismo de gipsófitas se superponen con áreas de riqueza de Dahlia. Cuenca del Balsas,flora gipsícola,Santiago Juxtlahuaca,Sierra Madre del Sur,Valle de Tehuacán-Cuicatlán | ||||||||
| 1:37a | [Botany • 2024] Bulbophyllum gopalianum (Orchidaceae: Epidendroideae) • A New Species of Bulbophyllum sect. Lemniscata from Mizoram (India), the westernmost Region of the Indo-Myanmar Biodiversity Hotspot
Abstract A new species, Bulbophyllum gopalianum, is described from the montane sub-tropical forest of Mizoram (India) in the westernmost area of the Indo-Myanmar biodiversity hotspot. The new species belongs to the section Lemniscata and shows close morphological affinity to B. suavissimum and B. shanicum. A detailed description, diagnosis, phenology, taxonomic notes and conservation assessment are presented. The new species is assessed as critically endangered (CR) based on its very small and restricted population size. Keywords: Bulbophyllum shanicum, Bulbophyllum suavissimum, Critically Endangered, section Lemniscata, tribe Dendrobieae   Bulbophyllum gopalianum Sâwmliana, M., K. Gogoi, J.S. Jalal and P. Kumar Mal Sâwmliana, Khyanjeet Gogoi, Jeewan Singh Jalal and Pankaj Kumar. 2024. Bulbophyllum gopalianum (Orchidaceae), A New Species from Mizoram (India), the westernmost Region of the Indo-Myanmar Biodiversity Hotspot. Nordic Journal of Botany. DOI: 10.1111/njb.04256 | ||||||||
| 3:32p | [Crustacea • 2024] Petrolisthes coeruleus • A New Species of the Petrolisthes galathinus complex (Anomura: Porcellanidae) from the Caribbean Sea, and Resurrection of Petrolisthes occidentalis from the East Pacific
Abstract The Petrolisthes galathinus complex currently consists of six American species distributed in the West Atlantic, including the amphi-American P. galathinus. All species in the complex are similar in their adult morphology but differ in colour, size, larval morphology, and shape of the adult sternal plate. The West Atlantic species have different geographic ranges, which overlap in the southern Caribbean. Previously published molecular data support the monophyly of the complex, and the reciprocal monophyly of each described species and further clades corresponding to different colour morphs. Here, the morph P. caribensis “Blue” is described as Petrolisthes coeruleus sp. nov., and Petrolisthes occidentalis is formally resurrected for the Pacific individuals of P. galathinus. By adding these two species to the P. galathinus complex, this now consists of eight species. Colour illustrations of all species and colour morphs are provided and their geographic distributions and ecological ranges are discussed and updated. Key words: Caribbean, colour morphs, ecological range, geographical range, Petrolisthes coeruleus sp. nov., Petrolisthes occidentalis
Family Porcellanidae Haworth, 1825: 184. Genus Petrolisthes Stimpson, 1858: 227. Petrolisthes coeruleus sp. nov. Etymology: The name coeruleus alludes to the blueish tone of carapace and extremities, which comprises a reliable diagnostic character to distinguish this species from P. caribensis. Alexandra Hiller and Bernd Werding. 2024. Description of A New Species of the Petrolisthes galathinus complex from the Caribbean Sea, and Resurrection of Petrolisthes occidentalis from the East Pacific (Crustacea, Anomura, Porcellanidae). ZooKeys 1191: 391-407. DOI: 10.3897/zookeys.1191.111570  | ||||||||
| 3:32p | [Herpetology • 2024] Systematics and Taxonomy of the Northern Banjo Frog (Anura: Limnodynastidae: Limnodynastes terraereginae) and Allied Taxa
Abstract The Australian banjo frogs are a distinctive group of medium to large, terrestrial, and burrowing limnodynastid frogs known for their conspicuous, single-note advertisement calls which are often likened to the pluck of a banjo string. Preliminary analyses of mitochondrial DNA sequences had previously indicated that the present taxonomy of the group, based primarily on morphology and advertisement calls, may not best reflect the true evolutionary relationships among taxa. In this study, we use comprehensive geographic sampling and integrative analyses of mitochondrial DNA sequences, nuclear single-nucleotide polymorphisms, adult morphology, and advertisement call data to re-evaluate the systematics and taxonomy of the Northern Banjo Frog (Limnodynastes terraereginae) and allied taxa. Our study reveals the presence of three evolutionarily distinct, morphologically divergent, and narrowly allopatric lineages that replace each other in a north–south series from the tip of Cape York Peninsula to the Sydney Basin in the south. Our findings demonstrate that our understanding of the systematics and taxonomy of Australian frogs remains incomplete, even for large and apparently “well-known” species that live in densely populated areas.
Tom Parkin, Jodi J. L. Rowley, Grace L. Gillard, Jarrod Sopniewski, Glenn M. Shea and Stephen C. Donnellan. 2024. Systematics and Taxonomy of the Northern Banjo Frog (Anura: Limnodynastidae: Limnodynastes terraereginae) and Allied Taxa. Ichthyology & Herpetology. 112(1); 76-105. DOI: 10.1643/h2023025 | ||||||||
| 3:32p | [Ichthyology • 2022] Lepadichthys geminus, L. heemstraorum & L. polyastrous • Review of the Lepadichthys lineatus complex (Gobiesocidae: Diademichthyinae) with Descriptions of Three New Species
Abstract The Lepadichthys lineatus complex (Gobiesocidae: Diademichthyinae) is defined by three unique characters within Lepadichthys: (a) upper-jaw lip fused with snout skin, usually lacking a distinct groove between the dorsal lip margin and snout (if present, very weak, restricted to posterior portion of jaw); (b) snout tip well extended, distinctly beyond lower-jaw tip; and (c) inner surface of both lips with oral papillae. A taxonomic review of the complex recognized four valid species: Lepadichthys geminus sp. nov. (southern Japan and Indonesia), Lepadichthys heemstraorum sp. nov. (southwestern Indian Ocean), Lepadichthys polyastrous sp. nov. (southwestern Indian Ocean) and L. lineatus Briggs, 1966 (Red Sea, Arabian Sea, Seychelles and Sri Lanka). L. geminus and L. lineatus are distinct from L. heemstraorum and L. polyastrous in having a circular (vs. elliptical) disc and more posteriorly located anus [L. geminus and L. lineatus with disc length and width 15.0–18.7 (mean 16.9) and 12.9–16.5 (14.6) % LS, respectively, and length to width ratio 1.03–1.25 cf. L. heemstraorum and L. polyastrous, 17.0–21.5 (18.9) and 11.6–15.2 (13.0) % LS, respectively, and 1.26–1.61; pre-anus length and disc to anus length 65.1–73.6 (68.7) and 25.7–31.6 (28.6) % LS, respectively vs. 60.2–68.3 (65.3) and 21.6–28.9 (25.5) % LS, respectively]. Body depth (as % of LS) is also useful to distinguish L. geminus and L. polyastrous from L. heemstraorum and L. lineatus [viz., 12.7–16.1 (14.4) in L. geminus and 10.8–14.9 (13.1) in L. polyastrous vs. 15.0–17.1 (15.9) in L. heemstraorum and 14.6–18.9 (16.8) in L. lineatus]. L. geminus differs distinctly from other species in the complex as follows: snout tip directed upward, usually on same horizontal level with lower margin of eye lens (lateral view) (vs. directed somewhat downward, horizontal level usually between lower margins of eye and eye lens in L. heemstraorum and L. lineatus, lower margin of eye in L. polyastrous); and lower abdomen with two yellow stripes (vs. a single stripe along ventral midline in L. polyastrous and L. lineatus, unknown in L. heemstraorum). L. polyastrous has unique patterns of yellow dots on the dorsal and ventral body surfaces, forming c. six to eight and three to five longitudinal rows, respectively [vs. usually forming c. three to five longitudinal rows and a single broken line, respectively, in L. geminus and L. lineatus; yellow dots usually absent in L. heemstraorum]. A poorly known species, Lepadichthys caritus Briggs, 1969, is regarded as a junior synonym of L. lineatus.
The Lepadichthys lineatus complex Lepadichthys geminus sp. nov. New English name: Pacific Doubleline Clingfish; standard Japanese name: Tasuji-umishida-ubauo Etymology. The specific name “geminus” is derived from Latin, meaning “twin” or “double,” in reference to the two yellow stripes under the abdomen and the close morphological similarity of the new species to L. lineatus, with which it had previously been identified. Lepadichthys heemstraorum sp. nov. New English name: Heemstra's Clingfish Etymology. The specific name “heemstraorum” is in honour of an esteemed ichthyologist, the late Dr Phil Heemstra, who with his wife Elaine Heemstra collected type specimens of L. heemstraorum and L. polyastrous. Lepadichthys polyastrous sp. nov. New English name: Starry Clingfish Etymology. The specific name “polyastrous,” a combination of the New Greek “polys” and “astrous,” means “many stars,” in reference to the many characteristic yellow dots on the body. Lepadichthys lineatus Briggs 1966 English name: Doubleline Clingfish Kyoji Fujiwara and Hiroyuki Motomura. 2022. Review of the Lepadichthys lineatus complex (Gobiesocidae: Diademichthyinae) with Descriptions of Three New Species. Journal of Fish Biology. 100(1); 62-81. DOI: 10.1111/jfb.14919  | ||||||||
| 3:33p | [Herpetology • 2024] Raorchestes hekouensis • A New Species of Raorchestes (Anura: Rhacophoridae) from Yunnan Province, China
Abstract A new bush frog species is described from Yunnan, China, based on phylogenetic analyses, species delimitation analyses, and morphological comparisons. Raorchestes hekouensis sp. nov. is distinguished from all other congeners by a combination of 11 morphological characters. The new species brings the current number of Raorchestes species in China to ten, nine of which are distributed in Yunnan. Molecular analyses supported an unnamed lineage previously recorded as “Raorchestes gryllus” in northern Vietnam. Further studies including additional samples are necessary to clarify the species diversity and boundaries of Raorchestes in China and Indochina. Key words: Indochina, “Raorchestes gryllus”, Raorchestes hekouensis sp. nov., species diversity, taxonomy
Raorchestes hekouensis sp. nov. Diagnosis: Raorchestes hekouensis sp. nov. is distinguished from all other relevant congeners by a combination of the following characters: (1) small body size (male SLV 16.1–17.5 mm, n = 4; female 21.1 mm, n = 1); (2) tympanum distinct; (3) tips of all fingers and toes expanded into discs with circummarginal grooves; (4) rudimentary webbing on toes; (5) all fingers and toes with lateral dermal fringes; (6) inner metacarpal tubercle present and outer metacarpal tubercle indistinct; (7) heels meeting when limbs held at right angles to body; (8) discs of fingers and toes yellow; (9) male with external single subgular vocal sac; (10) distinct X-shaped dark brown marking on back; (11) inner metatarsal tubercle oval, outer metatarsal tubercle absent. Etymology: The specific epithet hekouensis is named after the type locality, Hekou County, Yunnan, China. We suggest “Hekou bush frog” as its English common name, and “Hé Kǒu Guàn Shù Wā (河口灌树蛙)” as its Chinese common name.  Lingyun Du, Yuhan Xu, Shuo Liu and Guohua Yu. 2024. A New Species of Raorchestes (Anura, Rhacophoridae) from Yunnan Province, China. ZooKeys. 1192: 213-235. DOI: 10.3897/zookeys.1192.106013  | ||||||||
| 3:33p | [Herpetology • 2024] Rhinella bella • Cryptic Diversity in Toads of the Rhinella marina species group (Anura: Bufonidae) with a subjectively beautiful new species from Western Ecuador
Abstract The mainly Mesoamerican cane toad, Rhinella horribilis, is the northernmost species in the Rhinella marina species group of giant or cane toads, occupying an extensive range west of the Andean Cordillera from Ecuador north to southern Texas. However, a thorough assessment of geographic variation among R. horribilis populations, and of the phylogenetic relationships of the R. marina species complex, indicates previously unsuspected diversity within this species as currently recognized. Specifically, we evaluated whether toad populations from western Ecuador represent an evolutionary lineage distinct from the rest of R. horribilis based on extensive specimen collections and the combined evidence of mtDNA sequence variation, morphological, bioacoustics, and environmental information. Our results revealed that populations west of the Ecuadorian Andes constitute a well-supported, monophyletic clade that is distinctly different genetically, morphologically, acoustically, and ecologically from a sister taxon composed of R. horribilis populations from Central America and from populations ascribable to R. marina s.s. from the Amazon Basin of Ecuador and other countries. The weight of evidence confirms a new species (R. bella sp. nov.), described here, adding to our understanding of biogeographic relationships in this widespread clade of Neotropical toads. The new species name means ‘beautiful’ in Latin, in contrast to its sister species, ‘horribilis’. In addition, we designate a lectotype for Bufo marinus var. fluminensis to avoid ambiguity in the applicability of that name. amphibians, bioacoustics, divergence, geometric morphometrics, morphology, phylogeny, Rhinella marina, species delineation, systematics      Rhinella bella sp. nov. Pablo A Menéndez-Guerrero, Sueny P Lima dos Santos, María-José Salazar-Nicholls, David M Green and Santiago R Ron. 2024. Cryptic Diversity in Toads of the Rhinella marina species group (Anura, Bufonidae) with a subjectively beautiful new species from Western Ecuador. Zoological Journal of the Linnean Society. zlad197. DOI: 10.1093/zoolinnean/zlad197  | ||||||||
| 3:34p | [Crustacea • 2024] Trichopagurus spinibrachium • A New Species of the Genus Trichopagurus de Saint Laurent, 1968 (Decapoda: Anomura: Paguridae) from A semi-submerged marine cave in Okinawa Island, southwestern Japan
Abstract A new hermit crab species of Paguridae, Trichopagurus spinibrachium n. sp., is described on the basis of a single male specimen collected from the anchialine environment of a semi-submerged marine cave in Okinawa Island, Ryukyu Islands, southwestern Japan. It is morphologically similar to T. macrochela Komai & Osawa, 2005 and T. tenuidactylus Komai, 2013, but differs in the shape and armature of the ocular, antennular and antennal peduncles, chelipeds, and ambulatory legs. The new species may be distinguished from all known congeners by the stronger armature of the carpi and meri of both chelipeds. Trichopagurus spinibrachium n. sp. is the third species of the genus recorded from submarine caves, although it may also occur on nearby coral reefs as does T. macrochela and T. trichophthalmus (Forest, 1954). Key words: Crustacea, Paguroidea, cryptic fauna, dark environment, taxonomy, western Pacific   Trichopagurus spinibrachium n. sp. Hiroki Nakajima, Yoshihisa Fujita and Masayuki Osawa. 2024. A New Species of the Genus Trichopagurus de Saint Laurent, 1968 (Crustacea: Decapoda: Anomura: Paguridae) from A semi-submerged marine cave in Okinawa Island, southwestern Japan. Zootaxa. 5419(1); 121-129. DOI: 10.11646/zootaxa.5419.1.5 沖縄島・恩納村の海底洞窟から新種ヤドカリを発見！ | ||||||||
| 3:36p | [Mollusca • 2023] Kodama jujutsu & Idiosepius kijimuna • Two New Pygmy Squids (Cephalopoda: Idiosepiidae) from the Ryukyu Islands, Japan
Abstract Two new pygmy squid from the Ryukyu archipelago, Japan, are described: Kodama jujutsu, n. gen., n. sp. and Idiosepius kijimuna, n. sp. They differ from all other nominal species in a combination of traits, including the number of tentacular club suckers, shape of the funnel-mantle locking-cartilage, modification of the male hectocotylus and the structure of the gladius and nuchal-locking cartilage, in addition to mitochondrial DNA markers (12S, 16S and COI). They are both known from Okinawa Island and there is some overlap in their distributions. In a molecular phylogeny that includes all nominal Idiosepiidae, Kodama jujutsu, n. gen., n. sp. is sister taxon to a clade containing Xipholeptos Reid & Strugnell, 2018 and Idiosepius Steenstrup, 1881. Xipholeptos and Idiosepius are sister taxa. Idiosepius spp. now includes seven nominal species. In addition, aspects of the behaviour of the new species are described. Keywords: Pygmy squid, Kodama, Idiosepius, Idiosepius kijimuna, Kodama jujutsu, Ryukyu archipelago
Idiosepius kijimuna n. sp. Etymology: The species name is used for creatures in Okinawan mythology. The Kijimunā are said to be elfin creatures that make their home in the banyan trees that grow over the Ryukyu Archipelago. Their diet consists entirely of seafood and they are excellent fishers. They avoid octopuses at all costs. The name is used as a noun in apposition.  Kodama n. gen. Etymology: The generic name Kodama refers to a tree spirit in Japanese folklore. It has a reputation of being rounded in shape. The presence of Kodama is a sign of a healthy forest. We have chosen this name to suggest its extension to representing a healthy reef. Kodama jujutsu, n. sp. Etymology: The specific name jujutsu is derived from the Japanese word jūjutsu that is a martial art of the same name, translating to ‘gentle art’. The goal of the sport is to control your opponents by grappling them. This pygmy squid has been seeing grappling shrimp in a similar fashion. The name is used as a noun in apposition.
Amanda Reid, Noriyosi Sato, Jeffrey Jolly & Jan Strugnell. 2023. Two New Pygmy Squids, Idiosepius kijimuna n. sp. and Kodama jujutsu n. gen., n. sp. (Cephalopoda: Idiosepiidae) from the Ryukyu Islands, Japan. Marine Biology. 170: 167. DOI: 10.1007/s00227-023-04305-1 phys.org/news/2023-10-pygmy-squids-cora  |
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