Morphological analysis ofAlouatta seniculus species group (Primates, Cebidae). A comparison with biochemical and karyological data

1995 ◽  
Vol 10 (2) ◽  
pp. 169-176 ◽  
Author(s):  
C. R. Bonvicino ◽  
M. E. B. Fernandes ◽  
H. N. Seuánez
Author(s):  
Tulio F. Villalobos-Guerrero ◽  
Taeseo Park ◽  
Izwandy Idris

Abstract The present study reviews Perinereis Group 2 species from the Eastern and South-eastern Asian seas based on morphological analysis of the types, non-types and original descriptions, and the use of molecular evidence (COI and 16S rDNA) from newly collected material. These species are characterized by having two bar-shaped paragnaths on pharyngeal area VI, which are often deemed conical when small and pointed, triggering misidentifications as to Neanthes species. New terminology and definition for this particular type of bars are proposed, and the generic position of some resembling Neanthes species is also re-assessed. Five species are transferred to Perinereis: Perinereis babuzai comb. nov., P. belawanensis comb. nov., P. kinmenensis comb. nov., P. shigungensis comb. nov. and P. vitabunda comb. nov. ‘Perinereis aibuhitensis’ species group is newly proposed by encompassing species having proximal dorsal ligule similar throughout the body, dorsal cirri short, and blades of heterogomph falcigers straight with long terminal tooth forming a distinct tendon. Perinereis belawanensis comb. nov., P. linea and P. vitabunda comb. nov. are redescribed. Perinereis linea is regarded as a senior synonym of Nereis (Neanthes) orientalis and Perinereis vancaurica tetradentata based on type material, whereas its exotic status in the Mediterranean Sea is questioned. An identification key to all currently valid species within Perinereis Group 2 is also provided.


1998 ◽  
Vol 76 (7) ◽  
pp. 1236-1246 ◽  
Author(s):  
Reinhart A Brust ◽  
J William O. Ballard ◽  
Felice Driver ◽  
Diana M Hartley ◽  
Nora J Galway ◽  
...  

Phylogenetic and morphological analyses, male morphology, and hybrid crossing indicate that a population from Wardang Island, South Australia, is distinct from the monophyletic series of populations of Aedes (Halaedes) australis (Erichson) 1842 from Victoria, Tasmania, New South Wales, and New Zealand. The name Aedes (Halaedes) wardangensis has been assigned to the new species. Phylogenetic analysis of DNA sequences from the cytochrome oxidase II and internal transcribed spacer loci support the resurrection of Aedes (Halaedes) ashworthi Edwards, 1921 (Brust and Mahon, 1997). Aedes ashworthi is known only from Western Australia and was found to be infertile when crossed with Ae. wardangensis from South Australia and Ae. australis from New Zealand. The hybrid of Ae. australis from New South Wales × Ae. australis from New Zealand was fertile for three generations, documenting these as conspecific.


1998 ◽  
Vol 76 (7) ◽  
pp. 1236-1246 ◽  
Author(s):  
Reinhart A. Brust ◽  
J. William O. Ballard ◽  
Felice Driver ◽  
Diana M. Hartley ◽  
Nora J. Galway ◽  
...  

Author(s):  
Amir Yassin ◽  
Arnaud Suwalski ◽  
Lala H. Raveloson Ravaomanarivo

The ‘D. bakoue species complex’ Rafael, 1984 (‘D. montium species group’ Da Lage et al., 2007) comprises seven Afrotropical species. Using complete mitochondrial genome sequences and detailed morphological analysis, we revised the phylogenetic relationships between these species including two new ones. We found the ‘D. bakoue species complex’ to be a junior synonym of the ‘D. seguyi species complex’ Lachaise, 1971 and its seven species polyphyletic. We thus classified the species into three complexes, the ‘D. seguyi species complex’ comprises D. seguyi Smart, 1945, D. malagassya Tsacas & Rafael, 1982, D. curta Chassagnard & Tsacas, 1997 and D. chocolata sp. nov., the new ‘D. tsacasi species complex’ comprises D. tsacasi Bock & Wheeler, 1972 and D. seguyiana Chassagnard & Tsacas, 1997, and the new ‘D. vulcana species complex’ comprises D. vulcana Graber, 1957 and D. mylenae sp. nov. Drosophila bakoue Tsacas & Lachaise, 1974 could not be assigned to any of the defined complexes. The two new species are endemic to Madagascar and we report the presence of D. seguyi and D. curta in Mayotte and Madagascar, respectively. The results hence represent a significant step towards understanding the diversity and evolution of this species group in Africa and the islands of the Western Indian Ocean.


Zootaxa ◽  
2019 ◽  
Vol 4711 (3) ◽  
pp. 545-560
Author(s):  
DIEGO RODRIGO DOLIBAINA ◽  
MIRNA MARTINS CASAGRANDE ◽  
ALEXANDRE SPECHT ◽  
OLAF HERMANN HENDRIK MIELKE ◽  
ALBERT LEGRAIN ◽  
...  

The rivorum species-group of the genus Leucania (Noctuidae: Noctuinae: Leucaniini) is circumscribed and taxonomically revised, with the inclusion of three species. New taxonomic hypotheses were achieved through the morphological analysis of about 250 specimens allied to the type material of L. rivorum Guenée, 1852; L. pampa Schaus, 1894, stat. rev.; and Neleucania multistria Köhler, 1947, stat. rev., the last two resurrected from synonymy with L. rivorum and Dargida lithophilus (Butler, 1882), respectively. Adult habitus and morphology of the genitalia support the transfer of Neleucania multistria to Leucania, comb. nov. Lectotypes for L. rivorum and L. pampa are designated to ensure nomenclatural stability and recognizability of these taxa. Additionally, the similar, rust-colored species Leucania chejela (Schaus, 1921) is compared with species of the rivorum species-group, and is recorded from South America for the first time. All species of the rivorum group are re-described, with high-resolution images of taxonomic characters of the adults (head, patagium, and male and female genitalia), and updated distributional maps presented. 


Author(s):  
A. M. Kulikov ◽  
A. I. Melnikov ◽  
N. G. Gornostaev ◽  
O. E. Lazebny ◽  
V. G. Mitrofanov

Zootaxa ◽  
2012 ◽  
Vol 3439 (1) ◽  
pp. 51 ◽  
Author(s):  
MARCOS A. RAPOSO ◽  
GUY M. KIRWAN ◽  
VLADIMIR LOSKOT ◽  
CLAYDSON PINTO DE ASSIS

The type locality and the identity of the holotype of the southeast Brazilian endemic Scytalopus speluncae (Ménétriés,1835) have attracted considerable recent scrutiny and controversy, based in large part on doubts expressed in theornithological literature concerning some of the same author’s other Brazilian type localities. Most recently, Maurício etal. (2010) recommended substituting a new type locality, the Serra dos Órgãos, for S. speluncae, based almost entirely onan analysis of photographs of the holotype. Separately, some of the same authors (Whitney et al. 2010) described a newspecies, Scytalopus petrophilus, including, as a paratype, a specimen from Ménétriés’ original type locality. Our ownknowledge of S. speluncae is based on a thorough examination of the holotype and a comprehensive review of all availablehistorical data concerning its collection. Because the holotype itself is partially damaged and the identification of somesoutheast Brazilian Scytalopus is unquestionably difficult using plumage alone (due to intraspecific variation), and furtherbecause all authors agree that only one species of Scytalopus occurs in the environs of São João del Rei, correctlyidentifying the type locality is of overriding importance to ensure the correct nomenclature of the entire species-group ofwhich S. speluncae is the senior synonym. All contemporaneous data (three expedition diaries, the original specimen label,and the original description) clearly demonstrate that Ménétriés collected S. speluncae close to a well-known limestonecave in the region of São João del Rei, in the state of Minas Gerais, on 7 June 1824. Even the bird’s name, speluncae(pertaining to “the cave”) witnesses the validity of these facts. The available historical evidence was dismissed byMaurício et al. (2010) in clear contravention of the recommendations of Article 76A.1 of the ICZN (1999), which governssuch cases. It is also relevant that all available first-hand information concerning the holotype’s morphology, as well asthe evidence from its topotypes, supports the proposition that S. speluncae was collected where Ménétriés claimed. Wefurther demonstrate that: (1) S. speluncae is the name applicable to the paler gray species with buff-fringed blackishfeathers on the flanks, thighs, vent and upper tail coverts; (2) S. petrophilus must be a junior synonym of S. speluncae; (3)the only historical argument presented by Maurício et al. (2010) contra the type locality is based on an unrepresentativetranslation; and (4) their morphological analysis uses incomplete, contradictory or misleading data, and focuses onsearching for specimens similar to the paler gray S. speluncae within the variation of the dark gray S. notorius, in order tojustify emending the type locality. Crucially, none of these specimens of S. notorius is apparently similar to the holotype and topotypes of S. speluncae in respect to all of the latter’s distinguishing characters.


Zootaxa ◽  
2017 ◽  
Vol 4238 (2) ◽  
pp. 203 ◽  
Author(s):  
JEAN CLAUDE RAKOTONIRINA ◽  
SÁNDOR CSŐSZ ◽  
BRIAN L. FISHER

The Camponotus grandidieri species group and Camponotus niveosetosus species group of the Malagasy region are revised. Species delimitation was inferred from the evidence of both qualitative morphological analysis and multivariate morphometry. The multivariate method combined the Nest Centroid (NC)-clustering method and Partitioning Algorithm based on Recursive Thresholding (PART) function to generate hypotheses about species boundaries (clusters) based on 19 continuous morphological traits of minor workers. The proposed species hypotheses were tested by cumulative cross-validated Linear Discriminant Analysis (LOOCV-LDA) and Principal Component Analysis in a shape space (shape PCA). Morphometric ratios for the subsets of minor and major workers were used in species descriptions and redefinitions. Here, eight species are recognized, of which three are newly described and five are redescribed. Four species belong to the Camponotus grandidieri species group: auropubens Forel, efitra n. sp., grandidieri Forel, and maintikibo n. sp.; and four species belong to the Camponotus niveosetosus species group: descarpentriesi Santschi, madagascarensis Forel stat. rev., mita n. sp., and voeltzkowii Forel. Camponotus auropubens aldabrensis Forel and C. olivieri freyeri Santschi are synonymized under C. auropubens. Camponotus grandidieri atrabilis Santschi and C. grandidieri comorensis Santschi are synonymized under C. grandidieri. Illustrated species identification keys for both minor and major castes, taxonomic discussions, images, and distribution maps for each species superimposed on the ecoregions of Madagascar are also provided. 


Author(s):  
K.S. Kosik ◽  
L.K. Duffy ◽  
S. Bakalis ◽  
C. Abraham ◽  
D.J. Selkoe

The major structural lesions of the human brain during aging and in Alzheimer disease (AD) are the neurofibrillary tangles (NFT) and the senile (neuritic) plaque. Although these fibrous alterations have been recognized by light microscopists for almost a century, detailed biochemical and morphological analysis of the lesions has been undertaken only recently. Because the intraneuronal deposits in the NFT and the plaque neurites and the extraneuronal amyloid cores of the plaques have a filamentous ultrastructure, the neuronal cytoskeleton has played a prominent role in most pathogenetic hypotheses.The approach of our laboratory toward elucidating the origin of plaques and tangles in AD has been two-fold: the use of analytical protein chemistry to purify and then characterize the pathological fibers comprising the tangles and plaques, and the use of certain monoclonal antibodies to neuronal cytoskeletal proteins that, despite high specificity, cross-react with NFT and thus implicate epitopes of these proteins as constituents of the tangles.


Hereditas ◽  
2002 ◽  
Vol 136 (3) ◽  
pp. 240-246 ◽  
Author(s):  
P. M. O'GRADY ◽  
C. M. DURANDO ◽  
W. B. HEED ◽  
M. WASSERMAN ◽  
W. ETGES ◽  
...  

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