External Morphology of the Female Saccharicoccus sacchari (Cockerell) (Pseudococcidae: Homoptera), with a Note on the Evaluation of the Important Morphological Features for the Taxonomic Considerations

2009 ◽  
Vol 63 (1-4) ◽  
pp. 9-24 ◽  
Author(s):  
R. L. Yadava
Keyword(s):  
Morphological Features ◽  
External Morphology ◽  
Saccharicoccus Sacchari

scholarly journals Psenulus pallipes (Panzer, 1798), an adventive wasp species (Apoidea, Crabronidae) newly recorded in the fauna of Chile

Check List ◽  
2018 ◽  
Vol 14 (6) ◽  
pp. 1095-1098
Author(s):  
Brunno B. Rosa ◽  
Gabriel A. R. Melo
Keyword(s):  
Neotropical Region ◽  
Morphological Features ◽  
External Morphology ◽  
Wasp Species ◽  
Neotropical Species ◽  
First Time

We document the presence of the Palearctic Psenulus pallipes (Panzer, 1798) in Chile for the first time. We believe this represents an adventive population introduced into the Neotropical region most likely by accidental human transportation of nests. A map of distribution in Chile, illustrations of external morphology, and a discussion of morphological features to distinguish the introduced taxon from the Neotropical species are presented.

scholarly journals Rediscovery of Dendropsophus tintinnabulum (Anura: Hylidae) in the upper Rio Negro Drainage (Amazonas, Brazil), with a description of its advertisement call and external morphology

2016 ◽  
Vol 15 (2) ◽  
pp. 119 ◽  
Author(s):  
Bernardo Franco da Veiga Teixeira ◽  
Ariovaldo Antonio Giaretta
Keyword(s):  
Body Shape ◽  
Field Work ◽  
Morphological Features ◽  
External Morphology ◽  
Advertisement Call ◽  
Color Body ◽  
Rio Negro ◽  
Voucher Specimens ◽  
Genomic Results ◽  
Amazonas State

Dendropsophus tintinnabulum is one of six species of the genus unassigned to any group. Voucher specimens and recordings of this taxon obtained during field work in the municipality of São Gabriel da Cachoeira and elsewhere in the district of Cucuí in Amazonas state, Brazil, permit a description of the advertisement call and external morphological features. Based on overall similarities in size, dorsal color, body shape, advertisement call, and preliminary genomic results, D. tintinnabulum is tentatively assigned to the D. microcephalus Group

Relationships between external morphology and foraging behaviour: bats in the genus Myotis

2002 ◽  
Vol 80 (6) ◽  
pp. 1004-1013 ◽  
Author(s):  
M Brock Fenton ◽  
Wieslaw Bogdanowicz
Keyword(s):  
Multivariate Analysis ◽  
Body Size ◽  
Morphometric Analysis ◽  
Foraging Behaviour ◽  
Morphological Features ◽  
External Morphology ◽  
Morphometric Study ◽  
Genetic Analyses ◽  
Phylogenetic Perspective

A morphometric study of 41 species of Myotis revealed significant associations between morphological features and foraging styles, namely aerial feeding, gleaning, feeding over water, and trawling. Aerial feeders have small hind feet, short calcars, short ears, and narrow tragi. Gleaners have small hind feet, long ears, and wide tragi and tend to be larger in body size. Bats that feed over water have large hind feet, short calcars, short ears, and narrow tragi and tend to be smaller in body size. Trawlers have large hind feet and long calcars and tend to be larger in body size. The morphometric analysis also confirmed that some species of Myotis were intermediate in morphological features, coincid ing with alternation between foraging styles. The results support the view that the morphological features previously used to assign Myotis species to subgenera are more functional than phylogenetic, a position supported by recent genetic analyses. Examination of foraging styles from a phylogenetic perspective suggests that aerial feeding is ancestral and that subsequent diversification has been associated with partitioning and specialization into either gleaning or foraging over water and trawling. When the predictions from the multivariate analysis of the data for the genus Myotis are used with data from other bats, they suggest that 5 species of Nycteris are gleaners, while 11 species of Eptesicus are either aerial feeders or feed over water.

scholarly journals Differences in Features of External Morphology Traits of Young and Adult Snakes of the Family Colubridae (Reptilia)

2020 ◽  
Vol 20 (3/4) ◽  
pp. 116-127
Author(s):  
Anastasia A. Klenina ◽  
Keyword(s):  
Comparative Analysis ◽  
Morphological Characters ◽  
Morphological Features ◽  
External Morphology ◽  
Natural Origin ◽  
Laboratory Conditions ◽  
Natrix Natrix ◽  
The Family ◽  
Grass Snake ◽  
First Time

Characteristics of the meristic features of the external morphology of young and adult snakes (the Colubridae family) of three species, namely, the grass snake Natrix natrix, the dice snake N. tessellata and the Pallas’ coluber Elaphe dione, living in the Samara region, are described. For the first time, a comparative analysis was carried out of a number of morphological characters of uneven-aged snakes, namely: newborns obtained in laboratory conditions, juvenile specimens, and adult snakes captured in nature. It was revealed that those morphological features which remained unchanged during the snake's life (the number of Ventr., Scd., Lab. and Temp. scales) significantly differred in specimens of laboratory and natural origin. Statistically significant differences were also found between young and adult specimens of the dice snake from nature.

scholarly journals A new synonym, a new male description and new geographical records for three Ceraeochrysa species (Neuroptera: Chrysopidae)

Zootaxa ◽  
2011 ◽  
Vol 2913 (1) ◽  
pp. 47 ◽  
Author(s):  
FRANCISCO SOSA ◽  
SERGIO DE FREITAS
Keyword(s):  
New World ◽  
Morphological Features ◽  
Junior Synonym ◽  
External Morphology ◽  
Valid Species ◽  
New Synonym ◽  
First Time

Ceraeochrysa Adams is the largest genus in Chrysopini with 62 valid species distributed in the New World. The taxonomy of this group is complex and largely based on male genitalic characters. There are still serious complications, especially with the species that have been described solely from female specimens. The male of C. montoyana (Navás, 1913), unknown previously, is herein described for the first time, and compared with its closest relative, C. claveri (Navás, 1911). Ceraeochrysa acutipuppis Adams & Penny, 1985 is designated as a junior synonym of C. fairchildi (Banks, 1946) based on the evidence that both species share external morphological features uncommon in other species of the genus. The species C. claveri, C. fairchildi and C. montoyana are recorded from Venezuela for the first time. External morphology and genitalia of these insects are described and illustrated.

Taxonomic revision of the Erythrolamprus reginae species group, with description of a new species from Guiana Shield (Serpentes: Xenodontinae)

Zootaxa ◽  
2019 ◽  
Vol 4586 (1) ◽  
pp. 65 ◽  
Author(s):  
ALEXANDRE C. ASCENSO ◽  
JOÃO C. L. COSTA ◽  
ANA L. C. PRUDENTE
Keyword(s):  
New Species ◽  
Taxonomic Revision ◽  
Species Group ◽  
The State ◽  
Species Level ◽  
Morphological Features ◽  
External Morphology ◽  
Species Boundaries ◽  
Guiana Shield ◽  
A New Species

We perform a review of the Erythrolamprus reginae species group and putative related taxa (E. dorsocorallinus, E. zweifeli, and E. oligolepis), based on external morphology and hemipenial characters. We infer species boundaries among taxa traditionally associated with this group, recognizing two nominal subspecies (Erythrolamprus reginae reginae and E. r. macrosomus) in the species level. We propose the synonymy of E. r. semilineatus with E. reginae and recognize the validity of the related taxa, such as: E. dorsocorallinus, E. zweifeli, and E. oligolepis. In addition, two specimens occurring in the state Amapá, Brazil, are herein described as a new species. Therefore, we provide an identification key for the species of the group and discuss some of the combination of morphological features useful to delimitate the species of this group, in comparison with other representatives of the genus Erythrolamprus. 

Two new sympatric troglobitic freshwater flatworms (Platyhelminthes: Dugesiidae) from a hotspot of subterranean biodiversity in the Neotropics

Zootaxa ◽  
2018 ◽  
Vol 4438 (3) ◽  
pp. 561 ◽  
Author(s):  
LINDSEY HELLMANN ◽  
ANA MARIA LEAL-ZANCHET ◽  
RODRIGO LOPES FERREIRA
Keyword(s):  
Atlantic Forest ◽  
Dorsal Surface ◽  
Morphological Features ◽  
The Other ◽  
External Morphology ◽  
Sampling Location ◽  
Unique Combination ◽  
Copulatory Apparatus ◽  
Restricted Distribution ◽  
Distinguishing Features

The Areias System, situated in the Atlantic Forest, is considered a hotspot of troglobitic diversity in Brazil. Herein we describe two new sympatric, troglobitic species of Girardia occurring in this system. Both species show minute eyes; one of them has a whitish body, and the other scattered, fine pigmentation over the dorsal surface. Regarding the copulatory apparatus, one of the species shows a bulbar cavity with multiple diverticula and a bursal canal of the angled type, whereas the other has a single, ovoid bulbar cavity and a smoothly curved bursal canal, among other distinguishing features. Thus, each species can be differentiated by a unique combination of features in its external morphology and copulatory apparatus. Both present a restricted distribution, occurring in a group of pools in travertine rock formed by water from the epikarst. The morphological features of both species and this sampling location indicate that both species are stygobionts 

Morphological features of the eggs of Pentatomidae (Hemiptera: Heteroptera)

Zootaxa ◽  
2009 ◽  
Vol 1984 (1) ◽  
pp. 1-30 ◽  
Author(s):  
VIVIANA C. MATESCO ◽  
BRENDA B. R. J. FÜRSTENAU ◽  
JORGE L.C. BERNARDES ◽  
CRISTIANO F. SCHWERTNER ◽  
JOCÉLIA GRAZIA
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Morphological Features ◽  
External Morphology ◽  
Diagnostic Features ◽  
Genus Level ◽  
Type C ◽  
Average Size ◽  
Chorion Type ◽  
Scanning Electron

Eggs of 14 species within two subfamilies (Edessinae and Pentatominae, tribes Carpocorini, Nezarini, Pentatomini, Procleticini, and one unplaced species) of neotropical pentatomids were studied with scanning electron microscopy, and their external morphology was characterized in detail (chorion surface, operculum, and aero-micropylar processes). Eggs of these species have similar characteristics to those already described for other pentatomids. Most of them are barrelshaped, except in Edessa meditabunda (with spherical eggs) and Odmalea basalis (whose eggs have flattened lateral faces). A “T”-shaped ruptor ovis is present in all studied species; eclosion line at the operculum rim may be visible or not. Average size of eggs (length x width) ranges from 0.9 ± 0.12 x 0.9 ± 0.05 mm (Euschistus picticornis) to 2.1 ± 0.12 x 1.7 ± 0.10 mm (Chinavia erythrocnemis); the number of the aero-micropylar processes ranges from 10 (C. musiva) to 86 (C. obstinata). Chorion surface has a variable aspect: eggs of Euschistus spp., Loxa deducta, and Pallantia macunaima have the spinose chorion type; C. erythrocnemis, C. longicorialis, C. obstinata, C. pengue, and Grazia tincta have a reticulate chorion; C. musiva, O. basalis, and E. meditabunda have a granulated chorion; and Thyanta humilis has a salebrose chorion type. All the species with described eggs in the Edessinae share the same diagnostic features. In Pentatominae, we did not identify shared characters among the species at subfamily or tribe level. Chorion sculpture pattern and aero-micropylar processes shape, as well as number, are diagnostic features at genus level; however, a few species could be identified in the egg stage.

The tadpole of Scinax catharinae (Anura: Hylidae) with description of the internal oral morphology, and a review of the tadpoles from the Scinax catharinae group

2007 ◽  
Vol 28 (2) ◽  
pp. 177-192 ◽  
Author(s):  
Carlos Conte ◽  
Denise de Rossa-Feres ◽  
Fausto Nomura ◽  
Célio Haddad ◽  
Anne D'Heursel
Keyword(s):  
Habitat Use ◽  
Intraspecific Variation ◽  
Morphological Features ◽  
The Body ◽  
External Morphology ◽  
Group I ◽  
Morphological Differences ◽  
Tail Tip ◽  
Distinguishing Features ◽  
Vegetation Formation

AbstractWe present a description of the external morphology and internal oral features of the tadpole of Scinax catharinae and comparisons with the known tadpoles of the S. catharinae group. Two characters of the external morphology present some intraspecific variation: the row of submarginal papillae, which can be uniseriate or absent, and the tail tip, which can be large or small, truncated or not. That said, the tadpole of S. catharinae presents some distinguishing features that differentiate it from other tadpoles in the S. catharinae group: i) the marginal row of papillae with alternate disposition, ii) the spiracle opening on the midline of the body, iii) longest snout length, and iv) largest interorbital distance. The studied species were segregated into five ecomorphological guilds, characterized by external morphological features, tadpole habitat use and vegetation formation of species range. The taxonomy of the S. catharinae group is complex, due to the morphological similarities among the adults. Larval characters could help in the resolution of the taxonomic and phylogenetic complexities, since the morphological differences among the tadpoles in this group seem more conspicuous than those found among the adults.

Evolution and taxonomic significance of the copulatory apparatus in Ensifera (Orthoptera). Part 1: General concepts and origin

2014 ◽  
Vol 23 (2) ◽  
pp. 197-209 ◽  
Author(s):  
A.V. Gorochov
Keyword(s):  
Genetic Drift ◽  
Morphological Features ◽  
External Morphology ◽  
Biological Traits ◽  
Taxonomic Significance ◽  
Copulatory Apparatus ◽  
Ecosystem Evolution ◽  
Orthopteroid Insects ◽  
Species Taxonomy ◽  
Female Genital

The importance of using copulatory characters in generic and higher taxonomy (not only in species taxonomy) is discussed in the light of the recent “genital clock” concept which should partly replace the old “lock-and-key” theory. This concept assumes that evolutional changes in the copulatory apparatus (if it is sufficiently complicated) follow after genetic drift, and that these processes occur at a more uniform rate than changes in the characters of external morphology, ecological properties and many other biological traits, since structure of this apparatus is less dependent upon the situation in the ecosystem. Evolution of the copulatory apparatus in the suborder Ensifera and in its ancestors may be divided into three hypothetical stages reflected in some morphological features: 1) a highly hypothetical stage without copulation and without a copulatory apparatus in the most ancient (extinct) orthopteroid insects; 2) the appearance of different organs in early Orthoptera serving for fixation of partners during copulation and for insertion of the spermatophore in the female genital chamber; 3) the development of complicated organ with consolidation of these functions.

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