scholarly journals A DNA Barcode-Based Evaluation of the Southeast Asian Catfish Genus Hemibagrus Bleeker, 1862 (Teleostei: Siluriformes; Bagridae)

2015 ◽  
Vol 2015 ◽  
pp. 1-21 ◽  
Author(s):  
Julian J. Dodson ◽  
Frédéric Lecomte
Keyword(s):  
East Asia ◽  
Dna Barcode ◽  
Phylogenetic Reconstruction ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Large River ◽  
Species Group ◽  
Nominal Species ◽  
South East Asia ◽  
North Borneo

Species of the genus Hemibagrus are large river catfishes found throughout South-east Asia. The complexity of the region’s biogeographical history and the lack of well-defined morphological characters render the taxonomy and phylogenetic reconstruction of Hemibagrus problematical. Early molecular studies of the H. nemurus species group revealed extensive genetic subdivisions, the taxonomic status of which remained unclear. A recent, morphologically-based, revision of the genus provides an opportunity to clarify the taxonomic status of these lineages. We employ a DNA barcode derived from the mitochondrial cytochrome b gene to expand our genetic analyses of the genus and to test the congruence of morphologically and genetically based taxonomies. Secondly, we evaluate phylogenetic relationships among taxa. Thirdly, we describe the phylogeography of Hemibagrus in South-east Asia. The species groups and nominal species proposed in the morphology-based revision generally reflect a hierarchy of monophyletic groups based on phenetic and maximum likelihood reconstructions of mtDNA phylogenies. The most notable exception involves the definition of a morphologically cryptic group from North Borneo. H. nemurus from West Java appears to be a regional population of H. capitulum. The phylogeography of the genus has been principally influenced by the formation of North Borneo and the emergence of the Sunda Islands.

Diversity of the Pterasteridae (Asteroidea) in the Southern Ocean: a molecular and morphological approach

2020 ◽  
Author(s):  
Quentin Jossart ◽  
Marc Kochzius ◽  
Bruno Danis ◽  
Thomas Saucède ◽  
Camille V E Moreau
Keyword(s):  
Southern Ocean ◽  
Dna Barcode ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Integrative Approach ◽  
Morphological Identification ◽  
Nominal Species ◽  
Sea Star ◽  
Integrative Study ◽  
Suitable Case

Abstract An integrative approach is crucial in discrimination of species, especially for taxa that are difficult to identify based on morphological characters. In this study, we combine genetics and morphology to assess the diversity of Pterasteridae, a sea star family diversified in deep-sea and polar environments. Because of their derived anatomy and the frequent loss of characters during preservation, Pterasteridae are a suitable case for an integrative study. The molecular identification of 191 specimens (mostly from the Southern Ocean) suggests 26–33 species in three genera (Diplopteraster, Hymenaster and Pteraster), which match the morphological identification in 54–62% of cases. The mismatches are either different molecular units that are morphologically indistinguishable (e.g. Pteraster stellifer units 2 and 4) or, conversely, nominal species that are genetically identical (e.g. Hymenaster coccinatus/densus/praecoquis). Several species are shared between the Northern and Southern Hemispheres (e.g. Pteraster jordani/affinis). In conclusion, the taxonomic status of some groups is confirmed, but for others we find the need to re-evaluate the taxonomy at both genus and species levels. This work significantly increases the DNA barcode library of the Southern Ocean species and merges taxonomic information into an identification key that could become a baseline for future studies (pterasteridae-so.identificationkey.org).

Beyond Wallace: a new lineage of Chrysorthenches (Lepidoptera: Yponomeutoidea: Glyphipterigidae) reveals a journey tracking its host-plants, Podocarpus (Pinopsida: Podocarpaceae)

2020 ◽  
Vol 190 (2) ◽  
pp. 709-736
Author(s):  
Jae-Cheon Sohn ◽  
Shigeki Kobayashi ◽  
Yutaka Yoshiyasu
Keyword(s):  
Maximum Likelihood ◽  
East Asia ◽  
Host Plants ◽  
Morphological Characters ◽  
Species Group ◽  
Geological History ◽  
Dna Barcodes ◽  
History Of ◽  
Species Groups ◽  
Maximum Likelihood Phylogeny

Abstract A northward trans-Wallacean radiation is demonstrated for Chrysorthenches, a member of the Orthenches group. Here we review Chrysorthenches and allied genera resulting in a generic transfer of Diathryptica callibrya to Chrysorthenches and two new congeners: C. muraseaeSohn & Kobayashisp. nov. from Japan and C. smaragdinaSohnsp. nov. from Thailand. We review morphological characters of Chrysorthenches and allied genera, and find polyphyly of Diathryptica and the association of the Orthenches-group with Glyphipterigidae. These findings were supported in a maximum likelihood phylogeny of DNA barcodes from ten yponomeutoids. We analysed 30 morphological characters for 12 species of Chrysorthenches, plus one outgroup, via a cladistic approach. The resulting cladogram redefined two pre-existing Chrysorthenches species-groups and identified one novel lineage: the C. callibrya species-group. We review the host associations between Chrysorthenches and Podocarpaceae, based on mapping the working phylogenies. Our review suggests that ancestral Chrysorthenches colonized Podocarpus and later shifted to other podocarp genera. Biogeographical patterns of Chrysorthenches show that they evolved long after the Podocarpaceae radiation. Disjunctive trans-Wallacean distribution of the C. callibrya species-group is possibly related to the tracking of their host-plants and the complicated geological history of the island-arc system connecting Australia and East Asia.

scholarly journals An assessment of the taxonomic validity of three species of marsupial frogs (Anura: Hemiphractidae: Gastrotheca) from the Yungas of Bolivia based on external morphology and cranial osteology

Zootaxa ◽  
2021 ◽  
Vol 5068 (2) ◽  
pp. 211-239
Author(s):  
CLAUDIA LANSAC ◽  
RODRIGO AGUAYO ◽  
IGNACIO DE LA RIVA
Keyword(s):  
Principal Component ◽  
Taxonomic Status ◽  
Ct Scanning ◽  
Developmental State ◽  
Morphological Characters ◽  
Biological Entity ◽  
Nominal Species ◽  
Linear Discriminant ◽  
Morphological Studies ◽  
Cranial Osteology

The genus Gastrotheca (Anura: Hemiphractidae) is a group of marsupial frogs particularly diverse in Andean regions. Several taxonomic studies of this genus have been conducted in the humid cloud forests—or Yungas—of the Andean eastern slopes of central Bolivia (departments of Cochabamba and Santa Cruz). Yet, the distinction among three species that occur sympatrically in these forests, G. lauzuricae (proposed as a junior synonym of G. coeruleomaculatus in 2015), G. piperata, and G. splendens, remains unclear since the morphological characters that purportedly support their differentiation are variable and partly shared among them. We have carried out external morphological studies, including multivariate morphometric analyses, to assess how they support the taxonomic status of these three species. We also evaluated characters of the cranial osteology of a sample of six individuals using micro CT-scanning. Principal component and linear discriminant analyses resulted in a great overlap among the putative species. Cranial osteological comparisons did not reveal highly significant differences among them, but suggested that different degrees of hyperossification could be related to the developmental state of individuals. Our results indicate that most morphological and osteological reported differences between the three species likely represent intraspecific variation. Thus, we propose that the three nominal species belong to a single biological entity, for which the name Gastrotheca splendens (Schmidt, 1857) has priority. We also restrict the name Gastrotheca coeruleomaculatus (Werner, 1899) to externally similar congeneric populations from the Yungas forests of department of La Paz, but highlighting the need of a detailed evaluation of their taxonomic identity.  

scholarly journals Morphometry and Phylogeny of the Different Populations of Selaginella tamariscina (P. Beauv.) Spring and S. pulvinata (Hook. & Grev.) Maxim. in Northern Thailand

2021 ◽  
Vol 20 (4) ◽  
Author(s):  
Udon Pongkawong ◽  
◽  
Jatupol Kampuansai ◽  
Rossarin Pollawatn ◽  
Arunothai Jampeetong ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Southern China ◽  
Phylogenetic Analyses ◽  
Dna Barcode ◽  
Morphological Characteristics ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
The Philippines ◽  
Northern Thailand ◽  
Selaginella Tamariscina

Abstract “Dok Hin” is the Thai local name for Selaginella species that form rosettes. They commonly distributes in Siberia, Manchuria, southern China, Japan, the Philippines and Thailand. Morphology of Dok Hin is very resemble leading to misidentification. So, exactly number of species of Dok Hin in Thailand and their differences in morphological characteristics is not well understood. Thus, revision of morphological characters and phylogenetic confirmation of the taxonomic identification are needed. This study aims to examine morphological charateristics and phylogenetic patterns in eight populations of the Dok Hin in Northern Thailand. Morphology of Dok Hin from each populations was quantitatively examined using 15 vegetative and 6 reproductive characters meanwhile phylogenetic analyses was explored by DNA barcode ITS2. The results of the phylogenetic analysis revealed the existence of two species of Dok Hin, S. tamariscina and S. pulvinata. Selaginella tamariscina can be distinguished from S. pulvinata by its presence of a pseudotrunk above ground and ridges of dorsal leaves. On the other hand, the results of phylogenetic analysis indicated the differences among populations of S. pulvinata as well. Chiang Mai populations of S. pulvinata was characterized by peculiar set of characters long leaves and leaf apices look like caudate, while the rest of their populations have shorter leaves and leaf apices look like aristate. It indicates that S. pulvinata has genetic and phenotypic divergence among populations. However, additional studies of Dok Hin populations in other parts of Thailand and studies on different genetic markers are necessary to confirm the taxonomic status of S. pulvinata. Keywords: Dok Hin, Morphometric, Phylogeny, Pseudotrunk, Resurrection plant

scholarly journals A new species of Anomaloglossus (Anura: Aromobatidae) of the stepheni group with the redescription of A. baeobatrachus (Boistel and de Massary, 1999), and an amended definition of A. leopardus Ouboter and Jairam, 2012

Zootaxa ◽  
2019 ◽  
Vol 4576 (3) ◽  
pp. 439 ◽  
Author(s):  
ANTOINE FOUQUET ◽  
JEAN-PIERRE VACHER ◽  
ELODIE A. COURTOIS ◽  
CHLOÉ DESCHAMPS ◽  
PAUL OUBOTER ◽  
...  
Keyword(s):  
New Species ◽  
Taxonomic Status ◽  
Species Group ◽  
Type Locality ◽  
Advertisement Call ◽  
Nominal Species ◽  
Guiana Shield ◽  
Group A ◽  
Breeding Mode ◽  
Definition Of

Anomaloglossus is a species-rich genus of frogs endemic to the Guiana Shield that still harbors several unnamed species. Within the A. stepheni species group (which includes four valid nominal species), A. baeobatrachus has an uncertain taxonomic status, notably because the holotype was an unvouchered specimen depicted in a popular journal. Another member of this group, A. leopardus, was only superficially described, lacking information on the sex of specimens in the type series and on advertisement call. Therefore, these two taxa need clarifications in order to allow the description of the extant undescribed species. In this paper, we redescribe A. baeobatrachus based on newly collected material from the species type locality and provide information about its reproductive ecology. We also provide an amended definition of A. leopardus using newly collected material from its type locality. These two species form a clade along with a third species from the Eastern Guiana Shield, which is also described herein. The reproductive biology of A. baeobatrachus and A. stepheni is very similar. Both species have endotrophic and nidicolous tadpoles, despite being distantly related, suggesting independent evolution of this breeding mode. The new species and A. leopardus, on the other hand, have exotrophic tadpoles. 

Acidiella longipennis Hendel, the type species of Acidiella Hendel (Diptera: Tephritidae: Trypetini), with recognition of two new allied species from Myanmar

Zootaxa ◽  
2011 ◽  
Vol 2810 (1) ◽  
pp. 15
Author(s):  
HO-YEON HAN
Keyword(s):  
East Asia ◽  
Related Species ◽  
Type Species ◽  
Species Group ◽  
Unique Characteristic ◽  
South East Asia ◽  
Starting Point ◽  
The Family

The type species of the genus Acidiella Hendel is A. longipennis Hendel, which is known as a widely distributed species in South East Asia. Specimens of A. longipennis are rarely found in insect collections, but I was able to examine a number of Myanmar specimens collected by R. Malaise during the Swedish Expedition in 1934, and reported as A. longipennis by M. Hering in 1938. As a result, three related species were sorted out from these specimens. They look very much alike except for the dorsal abdominal patterns (difficult to see in dried specimens) and postabdominal structures. I here provide detailed descriptions of and a key to A. longipennis, A. spinipenis, sp. nov., and A. kambaitiensis, sp. nov. They are here defined as the A. longipennis species group based on a single synapomorphy: vesica of glans ventrally with 7–9 tiny spines. This is a unique characteristic never found in any other species of the tribe Trypetini as well as the family Tephritidae. I am providing this information as a starting point to refine the currently confused concept of the genus Acidiella.

scholarly journals Book Reviews

1961 ◽  
Vol 117 (2) ◽  
pp. 282-303
Author(s):  
R.J. Mohr ◽  
Carl A. Schmitz ◽  
P.E. Josselin de Jong ◽  
H.G. Quaritch Wales ◽  
H.J. Graaf ◽  
...  
Keyword(s):  
New York ◽  
William Shakespeare ◽  
East Asia ◽  
South East Asia ◽  
Kuala Lumpur ◽  
Oxford University ◽  
North Borneo ◽  
Orang Utan ◽  
Oxford University Press

- R.J. Mohr, Carl A. Schmitz, Historische probleme in Nordost-Neuguinea. Huon-Halbinsel. Franz Steiner Verlag GMBH. Wiesbaden. 1960. 425 Pp., 43 Abbildungen, 9 karten und 1 Faltkarte. Studien zur Kulturkunde 16. Band. - P.E. de Josselin de Jong, H.G. Quaritch Wales, Prehistory and religion in South-East Asia. Bernard Quaritch Ltd., London 1957. 175 pp. text, 24 figs., 2 plates. - H.J. de Graaf, K.G. Tregonning, Under chartered company rule (North Borneo 1881-1946). University of Malaya Press, Singapore, 1958. 222 pp. tekst, 3 ills., 2 krtn. - S. Kooyman, Karl Erik Larsson, Fijian Studies. Etnologiska Studier, 25. Göteborg, 1960. 147 pag., 65 ills. - A. Teeuw, Hans Kähler, Ethnographische und linguistische studien über die Orang darat, Orang akit, Orang laut und Orang utan im Riau-Archipel und auf den Inseln an der Ostküste von Sumatra. Veröffentlichungen des Seminars für Indonesische und Südseesprachen der Universität Hamburg. Band 2. Berlin 1960. VI + 294 pp. - A. Teeuw, Ali Haji Ahmad, Puisi Baharu Melayu (Zaman Permulaan). Disusun oleh: Ali Haji Ahmad. Siri Sastera DBP. Bil. 4. Dewan Bahasa dan Pustaka....Kuala Lumpur 1959. XV + 60 pp. - A. Teeuw, William Shakespeare, Romeo dan Julia, di-terjemahkan oleh Trisno Sumardjo. Oxford University Press, Kuala Lumpur 1960. X + 150 pp. - A. Teeuw, Chepu Kenchana. Antoloji cherita2 pendek dunia. Pengenalan dan anotasi oleh Derwent May. Kata pengantar oleh Asraf. Oxford University Press, Kuala Lumpur 1960. 196 pp. - A. Teeuw, Hasan bin Muhammad Ali, Musafir. Siri Sastera DBP Bil. 3....Kuala Lumpur 1959. 142 pp. - A. Teeuw, Asraf, Mekar dan Segar. Bunga rampai cherita-cherita pendek angkatan baru. Di-pileh dan di-bicharakan oleh Asraf. Oxford University Press, Kuala Lumpur 1959. XV + 157 pp. - A. Teeuw, Cherita pendek DBP. Siri Sastera DBP Bil. 2. Dewan Bahasa dan Pustaka...Kula Lumpur 1958. 180 pp. - B.A.L. Cranstone, S. Kooyman, The art of Lake Sentani. Museum of Primitive Art, New York 1959. 64 pp., 117 ills.

Megacraspedus laseni sp. nov. (Lepidoptera: Gelechiidae) from the Dolomites of north-eastern Italy

Zootaxa ◽  
2021 ◽  
Vol 4927 (4) ◽  
pp. 559-566
Author(s):  
GIOVANNI TIMOSSI ◽  
PETER HUEMER
Keyword(s):  
New Species ◽  
Male Genitalia ◽  
Dna Barcode ◽  
Morphological Characters ◽  
Species Group ◽  
Veneto Region ◽  
Female Sex ◽  
North Eastern

Megacraspedus laseni sp. nov. is described from Dolomiti Bellunesi (Veneto Region, Prov. Belluno, Italy). The habitus of the adult and male genitalia are described and illustrated whereas the female sex remains unknown. The new species belongs to the Megacraspedus pentheres species group and is closely related to the southern alpine M. eburnellus Huemer & Karsholt, 2001 from which it differs in morphological characters and in DNA barcode sequence. Megacraspedus carolustertius Gastón & Vives, 2020 is synonymized with M. quadristictus Lhomme, 1946, syn. nov. 

A taxonomic revision of the askoldella species-group of the genus Nemophora Hoffmannsegg (Lepidoptera: Adelidae)

1995 ◽  
Vol 26 (4) ◽  
pp. 459-472 ◽  
Author(s):  
Mikhail V. Kozlov
Keyword(s):  
East Asia ◽  
Male Genitalia ◽  
Taxonomic Revision ◽  
Species Group ◽  
South East Asia ◽  
Regions Of Russia

AbstractA group of externally very similar, grey species of the genus Nemophora Hoffmannsegg, whose females possess a brush of dark scales at the middle of their antenna, is revised. Five species of this group, all distributed in South-East Asia, are recognized: N. griseella (Walsingham) sp. rev. [= cyphozona (Meyrick) syn. n. ; = tricrates (Meyrick) syn. n.] from India, Burma and Nepal; N. ichnodesma (Meyrick) comb. n. from India and W Malaysia; N. cassiterites (Meyrick) comb. n. from India only; N. askoldella (Millière) [= irroratella (Christoph) ; = niphites (Meyrick) syn. n.] from China, S Korea, Japan, Khabarovsk and Primorye regions of Russia; N. chionites (Meyrick) comb. n. from India and Thailand. Data on all primary types are provided; lectotypes are designated where necessary. The monophyly of the group and the relationships of its species are discussed. Keys to species based on external characters and male genitalia are provided; adults and male genitalia are described and illustrated.

MORPHOLOGICAL STUDY OF MALE GENITALIA WITH PHYLOGENETIC INFERENCE OF CHORISTONEURA LEDERER (LEPIDOPTERA: TORTRICIDAE)

1992 ◽  
Vol 124 (1) ◽  
pp. 7-48 ◽  
Author(s):  
P.T. Dang
Keyword(s):  
Male Genitalia ◽  
Taxonomic Status ◽  
Morphological Characters ◽  
Species Group ◽  
Palaearctic Region ◽  
Morphological Evidence ◽  
Choristoneura Rosaceana ◽  
Body Parts ◽  
Species Groups ◽  
Nearctic Region

AbstractMale genitalia of Choristoneura species from the Nearctic Region and Palaearctic Region are described and illustrated. The study revealed that the male genitalia are among the most important body parts that contain valuable morphological characters for species distinction or grouping in this genus. They are potentially useful in the clarification of the taxonomic status of species in closely related species groups, such as the spruce budworm species complex in North America.On the basis of 17 interpretable male genital characters and their corresponding evolutionary states, the phylogeny of the genus Choristoneura is inferred and proposed. Nine species groups are recognized: (1) fumiferana, pinus, biennis, orae, occidentalis, lambertiana, carnana, retiniana, and spaldingiana; (2) diversana, murinana, metasequoiacola, and jezoensis; (3) longicellana; (4) lafauryana; (5) conflictana and fractivittana; (6) hebenstreitella, adumbratana, and luticostana; (7) albaniana and lapponana; (8) rosaceana and parallela; and (9) obsoletana and zapulata.Morphological evidence obtained in the present study suggests that two conifer-feeding species groups of Choristoneura, species group 1 from the Nearctic Region and species group 2 from the Palaearctic Region, are related. They represent the least evolved species groups in the genus. Choristoneura rosaceana, C. parallela, C. obsoletana, and C. zapulata, representing some of the species feeding on deciduous trees, are among the most evolved Choristoneura species.

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