Friday, January 31, 2025

[Arachnida • 2025] Amblyomma kappa • A New Species of reptile tick (Acari: Ixodidae) from subtropical East Asia closely related to the Oriental turtle tick (Amblyomma geoemydae) from tropical Southeast Asia

 

Amblyomma kappa Kwak, 

in Kwak, Qiu, Heath, Takano, Takahashi, Kelava, Tamura, Taya & Nakao, 2025.

Abstract
The correct delineation of tick species is critical for efforts aimed at safeguarding One Health. Historically, the Asian turtle tick (Amblyomma geoemydae sensu lato) has been regarded as a geographically widespread species across much of Asia. However, based on morphological and phylogenomic data, the subtropical lineage (from Japan, Taiwan, and parts of China) of A. geoemydae is recognised as a new species: Amblyomma kappa sp. n., and all life stages are described. The tropical lineage of A. geoemydae sensu stricto is recharacterized and a differential diagnosis is provided to distinguish the two species. The ecology, host associations, and medical importance of A. kappa are also discussed.


East Asian turtle tick (Amblyomma kappa n. sp.)

Family: Ixodidae Murray, 1877
Genus: Amblyomma Koch, 1844

Amblyomma kappa n. sp. Kwak, 2025
Amblyomma malayanum Keegan and Toshioka, 1957
Amblyomma geoemydae Yamaguti et al., 1971
Amblyomma geoemydae Fujita and Takada, 2007

Type host: Geoemyda japonica Fan 1931 (Ryukyu black-breasted leaf turtle)

Other hosts: Cuora flavomarginata Gray, 1863, Mauremys japonica Temminck and Schlegel 1832, Mauremys mutica Cantor, 1842, Lycodon semicarinatus Cope, 1860, ...

Differential diagnosis: Although A. kappa and A. geoemydae are closely related, they can be distinguished fairly easily based on a range of key morphological differences. Female: (i) when unengorged, A. kappa (∼4000 μm in length) is approximately half the size of A. geoemydae (∼7500 μm in length) (Fig. 12A); (ii) In A. kappa the scutum is almost as long as wide (width-length ration of ∼1:0.95), while in A. geoemydae the scutum is distinctly wider than long (width-length ration of ∼1:0.75) (Fig. 12B); (iii) a pair of ...

 
Mackenzie L. Kwak, Yongjin Qiu, Allen C.G. Heath, Ai Takano, Mamoru Takahashi, Samuel Kelava, Hisao Tamura, Yurie Taya and Ryo Nakao. 2025. Amblyomma kappa sp. n. (Acari: Ixodidae), A New Species of reptile tick from subtropical East Asia closely related to the Oriental turtle tick (Amblyomma geoemydae) from tropical Southeast Asia. Acta Tropica. 261, 107499. DOI: doi.org/10.1016/j.actatropica.2024.107499

[Mollusca • 2022] Songkhlanaia gen. nov.; Songkhlanaia tamodienica, Sundadontina plugpomenica, Trapezoideus thachiadensis, ... • Diversity and Phylogenetics of Freshwater Mussels (Unionidae) from Southern Thailand with the Description of One New Genus and Five New Species-Group Taxa


 Songkhlanaia gen. nov.; Stamodienica gen. et sp. nov.; 
Sundadontina plugpomenica sp. nov.;
 Monodontina vondembuschiana tapienica ssp. nov.; Mv. thasaenica ssp. nov.
; and 
Trapezoideus thachiadensis sp. nov.
 

in Konopleva, Lheknim, Sriwoon, Kondakov, Tomilova, Gofarov, Vikhrev et Bolotov, 2022. 

Abstract 
Southern Thailand represents a region of unique freshwater biodiversity with many endemic taxa, including a number of freshwater mussel species (Bivalvia: Unionidae). In this study, we recognize 13 taxa in the tribes Contradentini, Rectidentini, Pseudodontini (subfamily Gonideinae), and Indochinellini (subfamily Parreysiinae) that inhabit different localities in the Songkhla Lake, Tapi River, and Tha Taphao River basins. Based on the results of morphological and phylogenetic analyses, we discovered among these mussels six taxa new to science, including one genus, three species, and two subspecies. New taxonomic names are introduced here as follows: Songkhlanaia gen. nov.; S. tamodienica gen. & sp. nov.; Sundadontina plugpomenica sp. nov.; Monodontina vondembuschiana tapienica ssp. nov.; Mvondembuschiana thasaenica ssp. nov. (Pseudodontini); and Trapezoideus thachiadensis sp. nov. (Contradentini). These new taxa confirm the high conservation priority of the Southern Thai freshwater mussel fauna.

Keywords: freshwater mussel fauna; new taxa; phylogenetics; Southern Thailand; Unionidae

  


 Songkhlanaia gen. nov.; S. tamodienica gen. & sp. nov.; 
Sundadontina plugpomenica sp. nov.; 
Monodontina vondembuschiana tapienica ssp. nov.; Mvondembuschiana thasaenica ssp. nov.; 
 Trapezoideus thachiadensis sp. nov.  


 
Ekaterina S. Konopleva, Vachira Lheknim, Rujinard Sriwoon, Alexander V. Kondakov, Alena A. Tomilova, Mikhail Y. Gofarov, Ilya V. Vikhrev and Ivan N. Bolotov. 2022. Diversity and Phylogenetics of Freshwater Mussels (Unionidae) from Southern Thailand with the Description of One New Genus and Five New Species-Group Taxa. Diversity. 2023, 15(1), 10. DOI: 10.3390/d15010010   

[Botany • 2025] Nymphanthus adenophorus (Phyllanthaceae: Phyllantheae) • A New Species from central Vietnam

  

Nymphanthus adenophorus Tk.Yamam., Tagane & V.S.Dang

in Yamamoto, Dang, Souladeth et Tagane, 2025.  
Diệp hạ châu núi chúa  ||  DOI: doi.org/10.11646/phytotaxa.683.1.3 

Abstract
A new species of Nymphanthus (Phyllanthaceae), N. adenophorus from Ninh Thuan Province, central Vietnam, is described and illustrated, along with its vernacular name and preliminary conservation status. The new species is similar to N. pireyi and N. nanellus, but distinguished by its terete and shorter floriferous branchlets with fewer leaves, larger leaf blades, faintly visible lateral veins, longer pedicels of male flowers, and accordion-folded discs of pistillate flowers.

flora, Indochina, Malpighiales, Phyllantheae, taxonomy, Eudicots

Nymphanthus adenophorus Tk.Yamam., Tagane & V.S.Dang (from Tagane et al. N226).
A. Habit; B, C. Floriferous branchlets showing adaxial and abaxial leaf surfaces respectively; D. Enlarged view of a part of a floriferous branchlet showing stipules; E. Lateral view of a staminate flower. One of four sepals was detached to show the internal morphology; F, G. Overhead view of a staminate flower. Sepals were detached in G to show four foveolate discs; H. Diagonally overhead view of a pistillate flower; I. Lateral view of a pistillate flower; J. Enlarged view of a young ovary with one of three bifid stigmas (the rest of two were destroyed during dissection); K. Young fruit.
 Abbreviations: an, theca of anther; dc, floral disc; ov, ovary; sp, stipule. 
All scale bars = 0.5 mm. All photos taken by T. Yamamoto.

Nymphanthus adenophorus Tk.Yamam., Tagane & V.S.Dang, sp. nov.  

 Among Nymphanthus species distributed in Vietnam and adjoining countries, N. adenophorus is similar to N. pireyi (endemic to Central Vietnam) and N. nanellus (endemic to South China) in having small leaf blades (≤ 1 × 1 cm) of ovate, suborbicular to obovate shapes, sepals of both staminate and pistillate flowers with non-fimbriate margins, and pistillate flowers bearing connate (not free) discs surrounding the lower portion of the ovary. However, the new species can be clearly ...

Etymology:—The specific epithet adenophorus is derived from the presence of many distinct glands on floral discs. 
Vernacular name:—Diệp hạ châu núi chúa.

 
Takenori YAMAMOTO, Van-Son DANG, Phetlasy SOULADETH and Shuichiro TAGANE. 2025. Nymphanthus adenophorus, A New Species of Phyllanthaceae from Vietnam.  Phytotaxa. 683(1); 18-24. DOI: doi.org/10.11646/phytotaxa.683.1.3 

  

[Mollusca • 2025] Shinkailepas tiarasimia & S. cornuthauma • Integrative Taxonomy of New neritimorph Limpets (Gastropoda: Neritimorpha: Phenacolepadidae) from Indian Ocean Deep-sea Hot Vents shed light on their Biogeographic History

 

Shinkailepas cornuthauma
Gu, Chen, Gao, Zhou & Sun, 2025 
 

Abstract
Red-blooded neritimorph gastropods in the subfamily Shinkailepadinae are specialists of chemosynthesis-based ecosystems, with the most diverse genus Shinkailepas endemic to deep-sea hydrothermal vents. All described Shinkailepas species have so far been from the western Pacific, despite reports of unidentified Shinkailepas from the Indian Ocean in the literature for decades. Here, we use an integrative approach to characterize and describe these Indian Ocean vent neritimorphs for the first time, based on material collected from the Carlsberg Ridge (CR) and the Central Indian Ridge (CIR). We name two new species: Shinkailepas tiarasimia sp. nov. from both the CR and the CIR, and Shinkailepas cornuthauma sp. nov. from the CR. A combination of shell and epipodial lobe characters reliably separate these new species from their described congeners. A phylogenetic reconstruction of all known Shinkailepas species using 658 bp of the mitochondrial COI gene reveal two separate major clades within the genus, each with an Indian Ocean species—implying two independent colonizations of Indian Ocean vents by separate lineages. Our finding of two new species on the CR, including one not known anywhere else, underscores the unique biodiversity at these vents and strengthens the case for protecting them from potential deep-sea mining activities.

biodiversity, biogeography, COI mtDNA, Gastropoda, Indian Ocean, new species, phylogenetics, taxonomy


 

 

Xinyu Gu, Chong Chen, Kexin Gao, Yadong Zhou and Jin Sun. 2025. Integrative Taxonomy of New neritimorph Limpets from Indian Ocean Deep-sea Hot Vents shed light on their Biogeographic History. Zoological Journal of the Linnean Society. 203(1); zlae167. DOI: doi.org/10.1093/zoolinnean/zlae167  

[Diplopoda • 2025] Sinocallipus similis • Integrative Data reveal A New millipede Species of Sinocallipus Zhang, 1993 (Callipodida: Sinocallipodidae) from Vietnam, with notes on its phylogeny


Sinocallipus similis
 Nguyen, Stoev & Vu, 2025


Abstract
The callipodidan genus Sinocallipus Zhang, 1993 (Callipodida, Sinocallipodidae) is reviewed within the scope of the Vietnamese fauna. A total of three species are recorded in Vietnam including a new one, Sinocallipus similis sp. nov. All three species are confirmed by morphological and molecular data. An existing identification key of Sinocallipus species is amended to include the new species.

Key Words: Biodiversity, cave fauna, COI, phylogeny, taxonomy, Vietnam


Order Callipodida
Family Sinocallipodidae Zhang, 1993

Genus Sinocallipus Zhang, 1993

 Sinocallipus similis sp. nov.

Diagnosis: This species can be recognized by having up to 79 pleurotergites (in adult females, males with 78), yellowish body, long antennae, 5+5 crests between the ozopores on midbody PTs, almost equally subdivided paraprocts, gonopods with strongly swollen and long gonocoxal process g, and a long, trochanteral process of leg 9 with a pointed tip.

Etymology: From the Latin word “similis” meaning “similar” or “like”. The name denotes the morphological similarity between the new species and Sinocallipus deharvengi from Quang Binh Province in Vietnam.

Type locality of Sinocallipus similis sp. nov.
A. Khuoi Lin Cave; B. Na Mang Cave; C. Ground of Khuoi Lin Cave;
D. Sinocallipus similis sp. nov. habitus.


  Anh D. Nguyen, Pavel Stoev and Tam T. T. Vu. 2025. Integrative Data reveal A New millipede Species of Sinocallipus Zhang, 1993 (Callipodida, Sinocallipodidae) from Vietnam, with notes on its phylogeny. Zoosystematics and Evolution. 101(1): 69-80. DOI: doi.org/10.3897/zse.101.138716
.

Thursday, January 30, 2025

[Botany • 2025] Aschistanthera phucanhensis (Melastomataceae: Sonerileae) • A New Species from Phu Canh Nature Reserve, Hoa Binh province, Northwest Vietnam

 

Aschistanthera phucanhensis  C.W. Lin, K.S. Nguyen & D.B. Tran, 

in Phung, Lin, Kieu, Tran, Q. H. Nguyen et K. S. Nguyen, 2025. 
  
Abstract
A detailed description and illustrations are provided for the new species, Aschistanthera phucanhensis, from Phu Canh Nature Reserve in Hoa Binh province, Northwest Vietnam, are presented in this work. This marks the second known species within the genus. The novel species is differentiated from its related species, the type species of this genus, A. cristanthera, by several characteristics. These include the adaxial lamina surface being hirsute-hispid (vs. glabrous), with suprabasal veins (vs. basal), the hypanthium and sepals are covered with red hirsute-hispid or gland-tipped hirsute-hispid (vs. absent hairs), and the anther ventral cleft is cordate (vs. ventral cleft totally absent). According to the IUCN Red List Categories and Criteria, A. phucanhensis is assessed to be data deficient (DD).

Aschistanthera cristanthera, endemics, plant diversity, taxonomy, new taxa, Eudicots






Van Khoa PHUNG, Che Wei LIN, Thi Duong KIEU, Duc Binh TRAN, Quang Huy NGUYEN and Khang Sinh NGUYEN. 2025. Aschistanthera phucanhensis (Melastomataceae, Sonerileae), A New Species from Phu Canh Nature Reserve, Hoa Binh province, Northwest Vietnam.  Phytotaxa. 682(3); 281-287. DOI: doi.org/10.11646/phytotaxa.682.3.9

[Botany • 2025] Ceropegia antoanensis (Apocynaceae: Ceropegieae) • A New Species from Vietnam


Ceropegia antoanensis   

in Nguyen-Le, Nguyen, Tran et Luu, 2025.
loài Lồng đèn an toàn  ||  DOI: doi.org/10.11646/phytotaxa.682.3.11 
 
Abstract
Ceropegia antoanensis is described and illustrated as a new species endemic to Central Vietnam. The new taxon is morphologically allied to C. ansariana but differs in a number of characteristics. The phenology, distribution and provisional IUCN assessment of conservation status of the new taxon are provided.

 An Toan Nature Reserve, Ceropegieae, Central Vietnam, endemic, new taxon, Eudicots, taxonomy 


Ceropegia antoanensis 


Xuan Bach NGUYEN-LE, Hieu Cuong NGUYEN, The Bach TRAN and Hong Truong LUU. 2025. Ceropegia antoanensis (Apocynaceae: Ceropegieae), A New Species from Vietnam. Phytotaxa. 682(3); 295-300. DOI: doi.org/10.11646/phytotaxa.682.3.11 

[Botany • 2025] Prosthechea sanchezii • Clarification of Prosthechea guttata (Orchidaceae) and Description of An “old” New Prosthechea Species from southern Mexico and Guatemala


Prosthechea sanchezii  Salazar, R.Jiménez & T.L.Vieira,

in Salazar, Jiménez-Machorro, Vieira, Velasco-Gutiérrez, Maldonado, Salinas, Santiago et Hágsater, 2025. 

Abstract
Background: Epidendrum guttatum A.Rich. & Galeotti, based on specimens collected by Galeotti in Mexico in 1840, was predated by E. guttatum L. and replaced by Encyclia guttata Schltr. and subsequently by superfluous Epidendrum maculosum Ames, F.T.Hubb. & C.Schweinf.

Questions: The study aimed to show that the concept of Prosthechea guttata of recent authors was based on a misinterpretation of its type material, resulting in the application of the name to a different, undescribed species.

Studied species: Prosthechea guttata (Schltr.) Christenson and P. sanchezii Salazar, R.Jiménez & T.L.Vieira.

Study site and dates: Southern Mexico and Guatemala, 2004-2024.

Methods: Study of type material and its comparison with recent collections; field work; documental and herbarium research.

Results: The identity of Epidendrum guttatum A.Rich. & Galeotti (now Prosthechea guttata) is clarified, showing that recent authors have misinterpreted that morphologically distinctive species restricted to the Sierra Madre del Sur, Oaxaca, Mexico, confusing it with an undescribed species distributed east of the Isthmus of Tehuantepec in Oaxaca and Chiapas, Mexico and in Guatemala. The latter is proposed here as a new species, Prosthechea sanchezii, distinguished from genuine P. guttata, and all other Prosthechea species, mainly by the echinate-warty crests on the outer surface of the sepals.

Conclusions: Prosthechea guttata and P. sanchezii are two distinct species historically confused but easily distinguished by morphological attributes, each distributed on opposite sides of the Isthmus of Tehuantepec.

Keywords: Epidendrum guttatum, Oaxaca, Prosthechea maculosa, Prosthechea sanchezii, Sierra Madre de Chiapas, Sierra Madre del Sur

A. Isolectotype of Epidendrum guttatum A.Rich. & Galeotti (W-R catalogue No. 117, reproduced by courtesy of the Herbarium of the Naturhis-torisches Museum Wien, Vienna, Austria). B. Close-up of the inflorescence of the specimen in A.
C. Prosthechea guttata in situ on a lichen-covered rock (from Velasco et al. 3038). D. Inflorescence of another plant of P. guttata (from Velasco et al. 2355).
E. Inflorescence of Prosthechea ochracea (from Pérez García s.n.). F. Inflorescence of Prosthechea panthera (from Hágsater 12607).
Photographs by Tiago L. Vieira (A-B), Kenia Velasco (C-D), and Gerardo A. Salazar (E-F).

Prosthechea sanchezii.
A. Flowering plant. B. Inflorescence. C. Close-up of flowers at the apex of the inflorescence. D. Flower, front view. E. Flower, back view. F. Floral dissection. G. Column, dorsal, side, and ventral views (left to right). H. Column, ventral view, after removal of anther and pollinarium. I. Anther, top and bottom views, the latter showing the four pollinia and caudicles.
Photographs by Gerardo A. Salazar (A-D, from Salazar et al. 5761) and Rolando Jiménez-Machorro (E-I, from Leleu sub Jiménez 860).

Prosthechea sanchezii Salazar, R.Jiménez & T.L.Vieira, sp. nov.

Diagnosis. Similar to Prosthechea ochracea (Lindl.) W.E.Higgins, differing in the sepals with echinate-warty crests on the outer surface, the warts irregularly conical to uncinate, and the orangish ochre to greenish-orange flowers turning deep orange as the flower ages, the sepals and petals with sparse, irregular wine-red spots on their inner surface.

Etymology. The specific epithet honors our late friend and colleague Luis Martín Sánchez Saldaña (1966-2017), who for over 20 years was curator and researcher of Herbarium AMO, Mexico City, with a special interest in the systematics of the Epidendrum difforme Jacq. group.



Gerardo A. Salazar, Rolando Jiménez-Machorro, Tiago L. Vieira, Kenia Velasco-Gutiérrez, Mayra L. Maldonado, Julian Duarte Salinas, Elizabeth Santiago and Eric Hágsater. 2025. Clarification of Prosthechea guttata (Orchidaceae) and Description of An “old” New Prosthechea Species from southern Mexico and Guatemala.  Botanical Sciences. 103(1); 295-310. DOI: doi.org/10.17129/botsci.3599

[Botany • 2025] Dictyanthus reflexiflorus (Apocynaceae: Asclepiadoideae) • A New Species from Mexico


Dictyanthus reflexiflorus  Lozada-Pérez, E.B. Cortez & Martínez-Ambriz, 

in Lozada-PérezCortezPerez-Garcia, GONZÁLEZ et Martínez-Ambriz, 2025. 

Abstract
A new species of Dictyanthus from the state of Michoacan, Mexico, is described and illustrated Dictyanthus reflexiflorus sp. nov. It grows in tropical deciduous forests located in the municipality of Tacámbaro. A phylogenetic analysis based on molecular data (plastid regions trnL-trnF and rps 16) was conducted to explore the relationship of the new species. Results place the new species in Dictyanthus. The morphological characters that support this relationship are the presence of uncinate hairs and a reticulate corolla. The species has unique characteristics within the genus, such as a reflexed corolla and the tube 10-lobed closely pressed to the side of the gynostegium. A key to distinguish Dictyanthus reflexiflorus from congeners in Mexico is included.

Asclepiadoideae, endemic, Gonolobinae, Michoacán, phylogeny, Eudicots

Dictyanthus reflexiflorus.
 A. Plant with inflorescences. B. Close-up of branch showing mixed indumentum. C. Close-up of thichomes. D. Colleters at base of leaf-blade. E. Inflorescence. F. Close-up of the indument of the abaxial surface of the corolla. G. Gynostegium with style-head. H. Gynostegial corona lobe in posterior view. I. Gynostegial corona lobe in frontal view. J. Pollinarium. Arrows showing the corolla lobes.
Illustrations by Ericka B. Cortez, based on Lozada-Pérez et al. 3835.

Dictyanthus reflexiflorus.
 A-C. Plant and inflorescences with mature flowers. D. Side view of corolla and gynostegium. E. Dried flower. F. Flower fixed in alcohol. G. Vertical section of corona and gynostegium. (GC: Gynostegial corona, G: Style head, black arrows = tube lobes, gray arrows = corpuscle and blue arrows = keels).
Photos by María de la Luz Perez-Garcia and Lucio LozadaPérez.

Dictyanthus reflexiflorus Lozada-Pérez, E.B. Cortez & Martínez-Ambriz, sp.nov. 

Dictyanthus reflexiflorus shares a climbing habit with D. altatensis (Brandegee) Stevens (2000: 243) but differs from it by the reflexed corolla 10-lobed at base and inflorescence with peduncles 3–4 mm long (vs. corolla rotate, without lobes at the base and inflorescence with peduncles 4–8 cm long).

Etymology:—The epithet reflexiflorus refers to the reflexed corolla, a distinctive feature that is unique in Dictyanthus. 


Lucio LOZADA-PÉREZ, Ericka B. CORTEZ, Maria De La Luz PEREZ-GARCIA, César Ramiro Martínez GONZÁLEZ and Emmanuel MARTÍNEZ-AMBRIZ. 2025. Dictyanthus reflexiflorus (Apocynaceae: Asclepiadoideae) A New Species from Mexico.  Phytotaxa. 682(3); 199-213. DOI: doi.org/10.11646/phytotaxa.682.3.1 
 

[Funga • 2024] Aureoboletus wusangongii (Boletales: Boletaceae) • A New bolete from subtropical China


Aureoboletus wusangongii  N.K. Zeng, H.Z. Qin, W.F. Lin & L.G. Hu, 
 
in Qin, Zhong, Lin, Hu, Chen, Liang et Zeng, 2024.

Abstract
Aureoboletus wusangongii (Boletaceae, Boletales) from Zhejiang, subtropical China, is described as new based on morphological and phylogenetic evidence. An illustrated morphological description as well as comparisons with related species are presented. Additionally, a key to the accepted species of Aureoboletus in China is provided.

molecular phylogeny, morphology, new taxon, taxonomy, Fungi


Aureoboletus wusangongii N.K. Zeng, H.Z. Qin, W.F. Lin & L.G. Hu, sp. nov.  

Diagnosis: Differs from other species of Aureoboletus by a stipe with distinctly coarse-lacerate reticulations, large basidiospores with longitudinal ridges, and subcutis pileipellis.

Etymology: Latin “wusangongii” is in honor of Wu Sangong, the originator of shiitake mushroom, who was the founder of the world's "cutting flowers" cultivation technique.



Hua-Zhi QIN, Qiao-Wen ZHONG, Wen-Fei LIN, Li-Gui HU, Xiao-Long CHEN, Zhi-Qun LIANG and Nian-Kai ZENG. 2024. Aureoboletus wusangongii (Boletaceae, Boletales), A New bolete from subtropical China.  Phytotaxa. 674(2); 199-217. DOI: doi.org/10.11646/phytotaxa.674.2.3 

[Botany • 2025] Tetrastigma fruticosum (Vitaceae) • A New Species from Limestone Karst in central Laos


Tetrastigma fruticosum Soulad., Phonep. & Tagane, 

in Tagane, Souladeth, Phonepaseuth, Vongthavone, Kongxaisavath, Yamamoto et Murakami, 2025. 
 
Abstract
A new species of TetrastigmaT. fruticosum (Vitaceae), from the limestone karst in Khammouane Province, central Laos, is described. The new species can be distinguished from the previously known species in the genus by a combination of its shrubby habit, absence of tendrils, pedately 5-foliolate leaves (rarely 4, 6, or 7-foliolate) with shallowly emarginated leaflet, and 1-seeded oblong-ellipsoid fruits. A description, photographs, vernacular name and preliminary conservation status are provided for it.

Cayratieae, endemic, Indochina, phylogeny, Southeast Asian flora, Vitales, Eudicots
 

Tetrastigma fruticosum Soulad., Phonep. & Tagane sp. nov. 


Shuichiro TAGANE, Phetlasy SOULADETH, Phongphayboun PHONEPASEUTH, Thyraphon VONGTHAVONE, Deuanta KONGXAISAVATH, Takenori YAMAMOTO and Nariaki MURAKAMI. 2025. Tetrastigma fruticosum, A New Species of Vitaceae from Limestone Karst in central Laos.  Phytotaxa. 683(1); 9-17. DOI: doi.org/10.11646/phytotaxa.683.1.2  


[Crustacea • 2024] Sipadantonius roihani • A New Genus and Species of Pseudocyclopidae Giesbrecht, 1893 (Copepoda: Calanoida) from the marine cave “Turtle Tomb” of Sipadan Island, Sabah, Malaysia


Sipadantonius roihani  
Boonyanusith, Wongkamhaeng & Azman, 2024
  

Abstract
A new genus and species of the family Pseudocyclopidae, Sipadantonius roihani gen. et sp. nov., was described based on specimens collected using a light trap in the marine cave of Sipadan Island, Sabah, Malaysia. The new genus is most related to Pinkertonius, primarily based on the similarity observed in the armament of ancestral segment IV of the male antennules, the armament of the female P5 Exp-3, the segmentation of the male P5, the armament of the maxillular basal exite, and the relative length of the ancestral segment XXVII of the antennules. Nevertheless, it distinguishes itself from Pinkertonius and all other genera of the family by the absence of the lateral seta of the basis of all swimming legs, the presence of an inner seta on the coxa of the female P5, the reduction of furcal setae I and III, as well as the specific armament of the ancestral segment XX of the antennules and the maxillular coxal endite. The female of Sipadantonius roihani gen. et sp. nov. has aesthetascs on the ancestral segments IV and XX of the antennules, as well as six setae on the maxillular coxal endite, exhibiting the most plesiomorphic characteristics of the family Pseudocyclopidae. The latter characteristic has not been recorded in the order Calanoida. It was hypothesised that the new species was a particle feeder living in the pelagic zone of the marine cave. The existence of the new species supported the assumption that the regional distribution of the family Pseudocyclopidae exhibited the Tethyan track, which might have been the subsequent result of the colonisation of the habitats prior to the closure of the Tethys Sea.

Key words: Crustacea, Southeast Asia, systematics, taxonomy, Zooplankton

Sipadantonius roihani gen. et sp. nov. female:
A habitus, dorsal view B habitus, lateral view C urosome, ventral view D urosome, lateral view E genital double-somite, ventral view F furcal rami, dorsal view G furcal rami, lateral view. Arrowheads indicate integumental pores.
Scale bars: 200 μm (A, B); 100 μm (C, D); 50 μm (E−G).


Sipadantonius roihani gen. et sp. nov. photographs of lateral surface of basis of swimming legs, female (A−E) and male (F):
A posterior hyaline process on basis of P1 (indicated by arrow) B P1 C P3 D P4 E, F P5. Arrowheads indicate cuticular windows on lateral margin of basis. Scale bars: 10 μm.

Order Calanoida Sars, 1903
Superfamily Pseudocyclopoidea Giesbrecht, 1893

Family Pseudocyclopidae Giesbrecht, 1893

Genus Sipadantonius gen. nov.

Etymology: Named after the type locality, Sipadan Island, Sabah, Malaysia, in combination with the -tonius stem from the existing generic name Pinkertonius Bradford-Grieve, Boxshall & Blanco-Bercial, 2014, alluding to the similarity of the genus Pinkertonius. The gender is masculine.


 Sipadantonius roihani sp. nov.

Etymology: The specific epithet was conferred in honour of Mr Roihan Han, a Malaysian deep dive record holder (at a depth of 164 m), who also led the Turtle Tomb exploration activity. Consequently, the name is a noun in the genitive singular.


Chaichat Boonyanusith, Koraon Wongkamhaeng and Abdul-Rahim Azman. 2024. Sipadantonius roihani gen. et sp. nov., A New Genus and Species of Pseudocyclopidae Giesbrecht, 1893 (Copepoda, Calanoida) from the marine cave “Turtle Tomb” of Sipadan Island, Sabah, Malaysia. ZooKeys. 1219: 303-329. DOI: doi.org/10.3897/zookeys.1219.133132

Wednesday, January 29, 2025

[Arachnida • 2024] Xilithus qizimeishanensis • A New Species (Araneae: Phrurolithidae) from Hubei, China


Xilithus qizimeishanensis Liu & Hu, 

in R. Liu, J. Liu, C. Liu, Chen et Hu, 2024.

Abstract
Background: The genus Xilithus Liu & Li, 2023 contains 22 species, three of which are known from Hubei Province, China: X. acerosus (Yao, Irfan & Peng, 2019), X. auritus (Fu, Zhang & Zhang, 2016) and X. xingdoushanensis (Yao, Irfan & Peng, 2019).

New information: One new Xilithus species from Hubei, China is described: X. qizimeishanensis Liu & Hu sp. nov. Morphological description, digital photos and distribution map are provided.

Keywords: guardstone spider, taxonomy, biodiversity, morphology

Habitus of female Xilithus qizimeishanensis Liu & Hu sp. nov.
 A dorsal view; B ventral view. Scale bars: 1 mm.

Xilithus qizimeishanensis Liu & Hu sp. nov.
A Epigyne, ventral view; B Vulva, dorsal view. Scale bars: 0.1 mm.


Rongxin Liu, Jie Liu, Changyong Liu, Kuai Chen and Changhao Hu. 2024. A New Xilithus Species from Hubei, China (Araneae, Phrurolithidae). Biodiversity Data Journal. 12: e130526. DOI: doi.org/10.3897/BDJ.12.e130526