[Paleontology • 2024] Gondwanax paraisensis • A New “silesaurid” from the oldest Dinosauromorph-bearing Beds of South America provides insights into the early Evolution of Bird-line Archosaurs

Gondwanax paraisensis 

Müller, 2024  

DOI: 10.1016/j.gr.2024.09.007

Highlights: 

• One of the oldest dinosauromorphs is described.

• It is the earliest “silesaurid” with a sacrum composed of three vertebrae.

• The oldest episode of sympatry among “silesaurids” in South America is reported.

Abstract

Investigations regarding the early evolutionary history of bird-line archosaurs have undergone significant advancements in recent years. However, controversies remain, especially regarding the phylogenetic position of “silesaurids”. Whereas some hypotheses place these archosaurs as the sister-group to dinosaurs, others suggest that “silesaurids” are early ornithischian dinosaurs. Despite the phylogenetic disputes, “silesaurids” are a crucial group for comprehending the origins and early evolution of dinosaurs. In the present study, a new “silesaurid” from the Middle-Upper Triassic of Southern Brazil is described. Gondwanax paraisensis gen. et sp. nov. comes from the Dinodontosaurus Assemblage Zone of the Santa Maria Formation (Ladinian-Carnian boundary), representing one of the oldest “silesaurids” worldwide. Furthermore, Gondwanax paraisensis gen. et sp. nov is the oldest “silesaurid” with three sacral vertebrae, a feature usually observed in more derived forms. In addition, distinct from any other Triassic Pan-Aves, the new taxon bears an incipient fourth trochanter of the femur. This unique combination of features indicates a high diversity of locomotor strategies among early pan-avians. In addition, the co-occurrence of Gondwanax paraisensis gen. et sp. nov. and Gamatavus antiquus in the same Assemblage Zone represents the oldest evidence of sympatry among “silesaurids” in South America. Indeed, the unique combination of sacral and hindlimb features may suggest distinct behaviors for these species, potentially leading to niche differentiation within the same ecosystems.

Systematic palaeontology

Archosauria Cope, 1870 (sensu Gauthier & Padian, 2020)

Pan-Aves Gauthier and De Queiroz, 2001 (sensu Ezcurra et al., 2020)

Dinosauromorpha Benton, 1985 (sensu Ezcurra et al., 2020)

Gondwanax paraisensis gen. et sp. nov.

 

Rodrigo Temp Müller. 2024. A New “silesaurid” from the oldest Dinosauromorph-bearing Beds of South America provides insights into the early Evolution of Bird-line Archosaurs. Gondwana Research. In Press,  DOI: doi.org/10.1016/j.gr.2024.09.007

 

[Herpetology • 2024] The Rediscovery of Noblella peruviana after More than 115 Years helps Resolve the Molecular Phylogeny and Taxonomy of Noblella (Anura: Strabomantidae)

Noblella peruviana (Noble, 1921)

in von May, Diaz, Ttito, Santa-Cruz & Catenazzi, 2024.  

  DOI: 10.3390/d16100613

Abstract

We revise the taxonomy of the frog genus Noblella on the basis of a molecular phylogeny. Previous studies recognized that Noblella is non-monophyletic, with one clade distributed from southeastern Peru to northeastern Bolivia and adjacent areas in Brazil and another clade distributed from northern Peru to Ecuador and southeastern Colombia. The lack of sequences from the type species Noblella peruviana prevented the investigation of its phylogenetic position and the status of related taxa. Our rediscovery after more than 115 years allowed for the inclusion of DNA sequences of Noblella peruviana obtained from specimens collected at the type locality in southeastern Peru. We inferred a phylogeny based on a concatenated dataset (three mitochondrial and two nuclear loci) using Bayesian and maximum likelihood methods. Our phylogeny corroborated the non-monophyly of Noblella and helped resolve the status of related taxa, including Psychrophrynella bagrecito, the type species of the genus Psychrophrynella (rediscovered after 42 years). We identified a clade containing N. peruviana, P. bagrecito, and other species of Noblella and Psychrophrynella distributed in southern Peru. Given that the name Noblella predates Psychrophrynella, we propose that Psychrophrynella should be considered a junior synonym of Noblella. The second clade contains species of Noblella distributed in Ecuador and northern Peru, including N. myrmecoides, which used to be the type species of the genus Phyllonastes. Consequently, we propose to reinstate the genus Phyllonastes to accommodate all species of Noblella distributed in Ecuador, northern Peru, southeastern Colombia, and adjacent areas in Brazil. We present an updated taxonomy including new combinations for 12 species and reinstatements for three species.

Keywords: amphibians; Andes; terrestrial-breeding frogs

Noblella Barbour

Noblella Barbour, 1930: 81. 

Type species Sminthillus peruvianus Noble, 1921: 1, by original designation.

Phyllonastes Heyer, 1977: 151. 

Type species Euparkella myrmecoides Mynch, 1976, by original designation.

Content: Twelve species currently recognized in the genus (this paper): 

N. bagrecito, N. carrascoicola, N. chirihampatu, N. glauca, 

N. losamigos, N. madreselva, N. peruviana, N. pygmaea, 

N. ritarasquinae, N. thiuni, N. usurpator, and N. vilcabambensis.

(Note: No sequences available for N. carrascoicola and N. ritarasquinae. Proposed inclusion in the genus is based on similarities in morphology and geographic distribution.)

Noblella peruviana, adult specimens collected at the type locality (A–D)
Snout-vent length (SVL) is given in mm.
(A, B) female (CORBIDI 17510, SVL = 17.8 mm); (C, D) male (MUBI 19037, SVL = 13.3 mm)

 Noblella peruviana, adult specimens collected at the type locality (E–F) and at Oconeque, Aquele, Limbani, Puno (G, H).
Snout-vent length (SVL) is given in mm.
  (E, F) female (CORBIDI 18700, SVL = 16.7 mm); (G, H) male (CORBIDI 18734, SVL = 11.0 mm).

 Rudolf von May, M. Isabel Diaz, Alex Ttito, Roy Santa-Cruz and Alessandro Catenazzi. 2024. The Rediscovery of Noblella peruviana after More than 115 Years helps Resolve the Molecular Phylogeny and Taxonomy of Noblella (Amphibia, Anura, Strabomantidae). Diversity. 16(10), 613. DOI: doi.org/10.3390/d16100613

[Entomology • 2024] Talanga horakae • Re-description of the Genus Talanga Moore (Lepidoptera: Crambidae: Spilomelinae) and the Description of A New endemic Species from Indonesia

 

A, Talanga quadristigmalis; B, T. nubilosa;
C, Talanga horakae Sutrisno sp. nov. 

in Darmawan, Watung, Suwito, Narakusumo, Encilia, ... et Sutrisno, 2024. 

 DOI: 10.1016/j.aspen.2024.102323

Highlights: 

• The usefulness of female genitalia as diagnostic character in Talanga since their signa structures are species specific.

• A new endemic species Talanga horake is a new to science.

• An identification key of Indonesian Talanga based on external morphology and female genitalia characters.

Abstract

Six species of the genus Talanga Moore 1855 are re-described based on both morphological and genitalia characters. T. tolumnialis Walker is not included due to the lack of available of material. Morphological characters such as a tapering, oblique outwardly antemedial band on the forewing and two black metallic spots externally bordered by similar minute interciliar spots on the hindwing, are proposed as the most appropriate characters to define the genus Talanga. The study also reveals that certain genitalia characters, such as a spatula-shaped uncus, a simple valva with a medial rod-like plate, a long cylindrical phallus without cornuti, a bundle of pencil hairs at the coremata base in male genitalia, and a pair of ovate or circular signa medially bearing denticles in female genitalia, are also diagnostic of this genus. The description of a new endemic species from Foja Mountain, Talanga horakae sp. nov., is presented, as well as an identification key to Indonesian species, and images of adults and genitalia of the studied species.

 

Keywords: Diagnostic characters, Genitalia, Identification key, Papua, Talanga

A, Talanga quadristigmalis; B, T. nubilosa;
C, T. horakae sp. nov. #f (holotype) 

Talanga horakae Sutrisno, sp. nov.

Diagnosis. The female of Talanga horakae, sp. nov., can be easily distinguished from allied species within the genus Talanga by the presence of a simple crown distad to the black medial band on the forewing, and a dark brown, curved, oblique line, running from the distad M1 to CuA2 on the hindwing (Fig. 2C; black arrows). Diagnostic characters of the female genitalia include a pair of ovate signa with scattered blunt denticles medially, dense sharp denticles along the margin, ...

 

Darmawan Darmawan, Jackson F. Watung, Awit Suwito, Raden Pramesa Narakusumo, Encilia Encilia, Agmal Qodri, Dhian Dwibadra, Djunijanti Peggie, Rosichon Ubaidillah and Hari Sutrisno. 2024. Re-description of the Genus Talanga Moore and the Description of A New endemic Species from Indonesia (Lepidoptera: Crambidae; Spilomelinae). Journal of Asia-Pacific Entomology. In Press. DOI: doi.org/10.1016/j.aspen.2024.102323

[Ichthyology • 2024] Enteromius nzigidaherai • A New endemic Enteromius (Cypriniformes: Cyprinidae) from the upper Malagarazi in Burundi: Lessons for a protected area under implementation

Enteromius nzigidaherai 

Bigirimana, Kisekelwa, da Costa, Huyghe, Banyankimbona & Vreven, 2024

  DOI: 10.1111/jfb.15652 

 x.com/CharlotteHuygh6

Abstract

Recent collecting efforts in the upper Malagarazi basin (2013–2022) allowed for an integrative study based on qualitative (colour), quantitative (meristic and metric), and barcoding gene [mtDNA, cytochrome c oxidase (COI)] data of specimens similar to Enteromius sp. ‘ascutelatus’, being a previously identified, potentially, new species. Based on these data, the present study confirms its identification as a new species for science, which is here formally described as Enteromius nzigidaherai sp. nov. This new species belongs to the group of Enteromius species for which the last unbranched ray of the dorsal fin is flexible and devoid of serrations along its posterior edge. This species has a horizontal series of black spots at the midlateral level of the sides. Three congeneric species, known from the Congo basin sensu lato, with two of them also found in the upper Malagarazi basin, are most similar to it. However, E. nzigidaherai sp. nov. is distinguished from the two sympatric upper Malagarazi species, that is, E. quadrilineatus and E. lineomaculatus, at least by two meristics and two morphometrics. It is also distinguished from E. urostigma, known from the upper Congo basin, by two meristics and one, apparently related, morphometric. In addition, a barcoding (mtDNA, COI) study revealed that the specimens of E. nzigidaherai sp. nov. form a well-supported, separate lineage, with a K2P genetic distance of more than 10% with specimens identified as E. quadrilineatus and E. lineomaculatus, both originating from the upper Malagarazi basin and for which tissue samples were available. Finally, the new species was found to be endemic to the upper reaches of two left bank affluents of the upper Malagarazi basin: the Muyovozi and the Kinwa. However, both affluents are threatened by human activities, which seem to have resulted in its local disappearance as recent intensive collecting efforts in the latter affluent have remained unsuccessful. The species should thus be considered Critically Endangered (CR) according to IUCN criteria B1ab(ii,iv)c(i,iii). Therefore, it is hoped that the present description draws renewed attention to the importance of aquatic protection in the region by highlighting the need for the effective establishment of the Malagarazi Nature Reserve and concern for its optimal delimitation to efficiently protect the entire ichthyofauna of the upper Malagarazi, without excluding the fish species confined to its affluent rivers.

Keywords: aquatic protection, COI barcoding, colour pattern, Enteromius nzigidaherai sp. nov., Malagarazi Nature Reserve, Nkoma Massif

 

 Enteromius nzigidaherai sp. nov. 

Anatole Bigirimana, Tchalondawa Kisekelwa, Luis M. da Costa, Charlotte E. T. Huyghe, Gaspard Banyankimbona and Emmanuel J. W. M. N. Vreven. 2024. Description of A New endemic Enteromius (Teleostei: Cyprinidae) from the upper Malagarazi in Burundi: Lessons for a protected area under implementation. Journal of Fish Biology. DOI: doi.org/10.1111/jfb.15652

  x.com/CharlotteHuygh6/status/1841086014271459507

[PaleoBotany • 2023] Bauhinia tibetensis • The Oldest Fossil Record of Bauhinia s.s. (Fabaceae) from the Tibetan Plateau sheds light on its Evolutionary and Biogeographic Implications

  

 Bauhinia tibetensis Y. Gao & T. Su, 
 

in Gao, Song, Deng, Chen, Liu, ... et Su, 2023. 

DOI: doi.org/10.1080/14772019.2023.2244495 

english.CAS.cn

Abstract

Bauhinia s.s. is a large genus in the family Fabaceae, but its evolutionary and biogeographical history is still unclear due to the scarcity of fossil records compared to the highly diverse modern species in pantropic regions. Here, we report the earliest fossil record of Bauhinia s.s., namely Bauhinia tibetensis Y. Gao et T. Su sp. nov., based on leaves from the latest Paleocene of the southern Tibetan region. Combined with palaeoecological niche simulations and ancestral state reconstruction, the new fossils suggested a Paleocene origin of Bauhinia s.s. in the Afrotropical realm that subsequently dispersed to the Neotropical and Indomalayan realms. Bauhinia tibetensis belongs to the Asian clade of Bauhinia s.s. that reached the southern Tibetan region from the Afrotropical realm via the Kohistan-Ladakh Island Arc in the early Paleocene. This clade spread to south-eastern China during the Oligocene and entered northern India during the Neogene or earlier. The discovery of the oldest Bauhinia s.s. from what is now the southern Tibetan Plateau updates our understanding of the biogeographical history of this genus and demonstrates that the Kohistan-Ladakh Island Arc is an ancient corridor for floristic interchange between Africa and India.

Keywords: Bauhinia s.s., biogeography, diversification, Paleocene, leaf fossil, palaeoecological niche simulations

 

Yi Gao, Ai Song, Wei-Yu-Dong Deng, Lin-Lin Chen, Jia Liu, Wei-Cheng Li, Gaurav Srivastava, Robert A. Spicer, Zhe-Kun Zhou and Tao Su. 2023. The Oldest Fossil Record of Bauhinia s.s. (Fabaceae) from the Tibetan Plateau sheds light on its Evolutionary and Biogeographic Implications. Journal of Systematic Palaeontology. 21(1); 2244495. DOI: doi.org/10.1080/14772019.2023.2244495

 english.CAS.cn/newsroom/research_news/life/202311/t20231101_467162.shtml

  x.com/AsiaPaleofloras/status/1715100959364317389

[Botany • 2024] Euphorbia zhongiana (Euphorbiaceae, subgenus Esula) • A New Species from Danxia Landform Areas in Zhejiang Province, Eastern China

  

 Euphorbia zhongiana  

in Li, Xu, F. Chen, Pu, Xie, ... et Liang, 2024.

 DOI: doi.org/10.11646/phytotaxa.665.2.2

 

Abstract

Euphorbia zhongiana (Euphorbiaceae), from Zhejiang Province, eastern China, is described and illustrated as a new species. It is morphologically similar to E. fauriei, however, differs in its winter green habit, whole plant being glabrous; cyathophylls 2, broadly ovate, yellow-greenish; involucre 2.5–3.0 × 2.5–3.0 mm; the surface of ovary usually smooth, rare sparsely microtuberous; styles connate at middle towards base; apex slightly 2–lobed; capsules smooth without tuberculate or conical verrucae, rare sparsely and inconspicuously rugose; seed coat with reticulate wrinkle.

Euphorbia zhongiana, new species, morphological characters, phylogenetics analysis, Eastern China, Eudicots

Jun-Ping LI, Pan XU, Feng CHEN, Jin-Bao PU, Wen-Yuan XIE, Jun-Feng WANG, Jian-Sheng WANG, Hua-Min ZHU, Zheng-Hai CHEN and Wei-Qing LIANG. 2024. Euphorbia zhongiana (Euphorbia section Helioscopia, subgenus Esula, Euphorbiaceae), A New Species from Danxia Landform Areas in Zhejiang Province, Eastern China. Phytotaxa. 665(2); 96-108. DOI: doi.org/10.11646/phytotaxa.665.2.2

 

[Herpetology • 2024] Adhaerobufo gen. n. • The Remarkable Larval Morphology of Rhaebo nasicus (Werner, 1903) (Anura: Bufonidae) with the Erection of A New bufonid Genus and insights into the Evolution of Suctorial Tadpoles

  

Adhaerobufo gen. nov.
 Adhaerobufo ceratophrys (Boulenger, 1882) comb. nov.,
Adhaerobufo nasicus (Werner, 1903) comb. nov.

in Dias, Phillips, Pereyra, Means, Haas et Kok, 2024.

 DOI: 10.1186/s40851-024-00241-0

 Researchgate.net/publication/384455390

Photos by D. Bruce Means and Pedro H. Dias

Abstract

Tadpoles serve as crucial evidence for testing systematic and taxonomic hypotheses. Suctorial tadpoles collected in Guyana were initially assigned to Rhaebo nasicus through molecular phylogeny. Subsequent analysis of larval and adult morphological traits revealed synapomorphies within the clade encompassing R. nasicus and R. ceratophrys, prompting the recognition of a new genus described herein as Adhaerobufo. The new genus is distinguished from other bufonids by specific phenotypic traits including an enlarged, suctorial oral disc with distinct papillae arrangements, and the presence of certain muscles and narial vacuities at the larval stage. However, only a few adult external characteristics (e.g., enlarged eyelids, infraocular cream spot), seem to be reliably discriminative from related genera. This study underscores the significance of larval morphology in anuran systematics and offers new insights into the evolution of suctorial and gastromyzophorous larvae within bufonids.

Keywords: Evolution, Larval traits, Musculoskeletal system, Pantepui, Suctoriality, Systematics, Taxonomy

Living tadpole of  “Rhaebo” nasicus in right lateral (A), dorsal (B), and ventral (C) views.

Photos by D. Bruce Means

The tadpole of “Rhaebo” nasicus (CPI10704) at stage 38 in lateral (A), dorsal (B), and ventral (C) views.

Scale bar = 1.0 mm. Photos by Pedro H. Dias

Adhaerobufo gen. nov.

 

Type species: Bufo nasicus (Werner, 1903) comb. nov.

 

Content: Adhaerobufo ceratophrys (Boulenger, 1882) comb. nov., and Adhaerobufo nasicus (Werner, 1903) comb. nov.

Etymology: Adhaerobufo gen. nov. (gender masculine) is derived from the Latin adhaerens, meaning adherent and the Latin būfo, meaning toad. The name refers to the unique suctorial morphology of their tadpoles.

Definition and diagnosis:

Adhaerobufo gen. nov. can be differentiated from all other Bufonidae by the combination of the following characters: (1) tadpole with enlarged, suctorial, oral disc; (2) tadpole oral disc with a complete row of marginal papillae; (3) tadpole oral disc with multiple rows of submarginal papillae on the lower lip and by a single row of marginal papillae on the upper lip; (4) tadpole oral disc with an uninterrupted second anterior row of keratodonts; (5) presence of the m. interhyoideus posterior at larval stage; (6) presence of the m. rectus abdominis anterior at larval stage; (7) presence of narial vacuities in the buccopharyngeal cavity at larval stage; (8) projecting, enlarged eyelid in adults; (9) presence of an infraocular cream spot in adults, (10) sphenethmoid relatively narrow, overlapping only the medial ends of the palatines; and (11) posterior process of the prootic prominent and notched.

Kamana Creek, upstream within 100 m of Kamana Waterfall, draining Mt. Kopinang low waters where tadpoles of Adhaerobufo were collected (A) and an unnamed stream on the slopes of Maringma-tepui where tadpoles were also observed (B).
Amplexing couple of A. nasicus (C and D).

Photos by D. Bruce Means (A, C, D) and Philippe J. R. Kok (B)

Geographical distribution of Adhaerobufo gen. nov. in northwestern Guyana, eastern Venezuela and upper Amazon Basin. Inset map of South America, highlighting the geographical area occupied by the genus (A). Known distribution of A. ceratophrys and A. nasicus (B).
 Examples of macrohabitats in which the new genus is present; Kaieteur Falls in Guyana (C), uplands and highlands of western Guyana (D), and lowlands, Amazon Forest, Icá River, Brazil (E).

Shape files of the geographical distribution were downloaded from the IUCN website. 

Adult and tadpole are from A. nasicus. 

Photos by: Philippe Kok (C and D) and Pedro H. Dias (E)

Torrential environments that were colonized by suctorial/gastromyzophorous larvae of bufonids. Adult of Atelopus sp. in Tacarcuna, Colombia (A); fast flowing waters occupied by Atelopus elegans at Isla Gorgona, Colombia (B);
larvae of Ansonia guibei attached to rocks of fast flowing streams in Borneo (C and D).

Photos by Marco A. Rada (A), David Velázquez (B), and Alexander Haas (C and D)

 

Pedro Henrique dos Santos Dias, Jackson R. Phillips, Martín O. Pereyra, D. Bruce Means, Alexander Haas and Philippe J. R. Kok. 2024. The Remarkable Larval Morphology of Rhaebo nasicus (Werner, 1903) (Amphibia: Anura: Bufonidae) with the Erection of A New bufonid Genus and insights into the Evolution of Suctorial Tadpoles. Zoological Letters. 10: 17. DOI:  doi.org/10.1186/s40851-024-00241-0

  Researchgate.net/publication/384455390_The_remarkable_larval_morphology_of_Rhaebo_nasicus_with_the_erection_of_a_new_genus

[Ichthyology • 2024] Opsariichthys rubriventris • A New Species of Cyprinid Genus Opsariichthys (Teleostei: Cyprinidae) from the Pearl River, Southern China

Opsariichthys rubriventris  J.-B. Chen, Y.-T. Li, J.-J. Zhou & J.-J. Wang,

in Chen, Y.-T. Li,Zhou, C. Li, Weng, Lin et Wang, 2024. 

广东马口鱼  ||  DOI: 10.3390/d16100596

Abstract

A new cyprinid fish, Opsariichthys rubriventris sp. nov., is described from the Xizhijiang River, a tributary of the Pearl River basin in Huizhou City, Guangdong Province, southern China. The species is distinguished from all other congeners by the following combination of characters: predorsal scales 13–14; lower jaw projecting slightly beyond upper jaw; cheek with two mainly longitudinal rows of tubercles; and lower jaw, belly, pectoral fin, and anterior margin of anal fin in adult males being reddish-orange. The principal component analysis result of the morphological data indicated that O. rubriventris sp. nov. could be clearly distinguished fromfour other congeners. The phylogenetic analysis conducted in this study, utilizing both Maximum Likelihood (ML) and Bayesian Inference (BI) methods, supported the monophyly of the novel species O. rubriventris sp. nov. at the species level. Additionally, the genetic distance analysis revealed that O. rubriventris sp. nov. exhibits a genetic distance ranging from 0.14 to 0.16 with its congeneric species, further affirming its taxonomic status.

Keywords: taxonomy; phylogenetic analysis; Guangdong province; opsariichthine

Opsariichthys rubriventris sp. nov.:
 (a) freshly preserved male;
(b) male, preserved specimen, SCNU202404001, holotype, 67.9 mm SL, Huidong County, Huizhou City, Guangdong Province, China;
(c) female, SCNU202404002, paratype, 60.7 mm SL, Huidong County, Huizhou City, Guangdong Province, China.

Opsariichthys rubriventris sp. nov. J.-B. Chen, Y.-T. Li, J.-J. Zhou & J.-J. Wang, 

 Diagnosis: 

Opsariichthys rubriventris sp. nov. can be distinguished from the congeneric species by the following combination of morphological characters: (1) no maxillary barbels; (2) no anterior notch at the tip of the upper lip; (3) lateral line scales 39–43; (4) predorsal scales 13–14; (5) narrow body width; (6) lower jaw protrudes slightly beyond the front of the snout; (7) 2 rows of pearl organs of the cheek, and the pearl organs are cone-shaped; (8) the pectoral fins of adult males do not extend to the origin of the pelvic fins; (9) adult males have significant nuptial coloration; the lower jaw and ventral side are orange-red; (10) the envelope of the first six rays of the anal fin of adult males, females, and juveniles is orange-red, and the remaining rays gradually become colorless.

Morphologically, O. rubriventris sp. nov. can be clearly distinguished from its congeners O. bidens and O. hainanesis based on these characteristics: O. bidens and O. hainanesis have a concave notch at the front of the upper jaw in which the anterior end of the mandible fits, while the O. rubriventris sp. nov. does not have a deep notch at the front of the upper jaw ...

Etymology: The specific epithet rubriventris is constructed from the Latin words ruber, meaning red, and venter, meaning belly, an adjective, referring to the red belly of the mature males. In addition, since O. rubriventris sp. nov. is only distributed in Guangdong Province, China, we suggest its Chinese vernacular to be “广东马口鱼”.

  Jia-Bo Chen, Ying-Tao Li, Jia-Jun Zhou, Cheng Li, Guo-Xi Weng, Hung-Du Lin and Jun-Jie Wang. 2024. A New Species of Cyprinid Genus Opsariichthys (Teleostei: Cyprinidae) from the Pearl River, Southern China. Diversity. 16(10), 596. DOI: doi.org/10.3390/d16100596