scholarly journals Μορφολογία και συστηματική των Eriophyoidea (Acari: Prostigmata) της ελληνικής χλωρίδας

2012 ◽  
Author(s):  
Ελένη Μαλανδράκη
Keyword(s):  
Ventral Side ◽  
Cultivated Plants ◽  
Host Feeding ◽  
Systematic Classification ◽  
Worldwide Distribution ◽  
The Family ◽  
Original Illustrations ◽  
Herbivorous Species ◽  
First Time

Superfamily Eriophyidea consinsts of the families Phytoptidae, Eriophyidae and Diptilomiopidae. To date they are the smallest known mites. They are distinguished by their vermiform shape and two pairs of legs at all stages, a feature unique amongst all known families of mites.The Eriophyoidea are exclusively herbivorous species found in both cultivated and non cultivated plants. The majority of them are specific to their host, feeding on particular plant species or on a small number of closely related species, often causing impressive symptoms. Many of them are important pests of cultivated plants. For this reason, despite their small size and the difficulties it entails, Eriophyoidea was the subject of a large number of studies both in past and in recent years.The aim of this study is to contribute to the study of the Greek flora mite fauna in general and to the study of Eriophyoidea in particular.Plant samples were taken from most geographic regions of Greece. The collection of mites was achieved directly, using a stereoscope. Permanent microscope mounts were prepared and the mite speciments were observed and illustrated using a research microscope supplied by a drawing tube.In the first part of the present study it is examined in detail the morphology of Greek Eriophyoidea species found. Gnathosoma with pedipalps, chelicerata, prodorsum, legs, coxisternal and genital region, dorsal and ventral side of opisthosoma and all individual characters which are essential for the systematic classification of Eriophoidea, were studied. The study of the morphology concerns, mainly the adults, female protogyne and male, while information is given about the morphology of immature stages and deutogyne female.In the second part is studied the systematics of the Greek species of Eriophoidea. The mites that were found are classified into families, subfamilies, tribes, genera and species and related keys are given.In the descriptions of Greek species a detailed description of protogyne female and a brief description of the male (where this was found), original illustrations, their worldwide distribution and their distribution in Greece, the hosts and symptoms (if there) are provided.The systematic study of Eriophoidea found in Greek flora, showed the presence of 103 species in 33 genera belonging to all 3 families. Specifically, from the family Phytoptidae 5 species were found belonging to the genera Novophytoptus, Trisetacus, Phytoptus and Mackiella. From the family Eriophyidae 80 species were found belonging to the genera Bariella, Cecidophyopsis, Cecidophyes, Achaetocoptes, Colomerus, Stenacis, Eriophyes, Aceria, Acaricalus, Caliphytoptus, Calepitrimerus, Epitrimerus, Platyphytoptus, Cupacarus, Phyllocoptes, Anthocoptes, Aculus, Aculodes, Aculops, Neooxycenus, Tetraspinus, Tetra θαη Ditrymacus. From the family Diptilomiopidae 18 species were found belonging to the genera Asetadiptacus, Diptacus, Asetacus, Rhinotergum, Rhinophytoptus and Rhyncaphytoptus. From these, 33 species are new to science and another 42 are reported for the first time in Greece. For several other species, Greece in the second country from which are reported.

A comparison of methodological approaches to the subfamilial classification of the Naididae (Oligochaeta)

1987 ◽  
Vol 65 (3) ◽  
pp. 691-707 ◽  
Author(s):  
A. F. L. Nemec ◽  
R. O. Brinkhurst
Keyword(s):  
Data Matrix ◽  
Jaccard Coefficient ◽  
Data Set ◽  
Parsimony Method ◽  
Fit Statistics ◽  
Reconstruction Methods ◽  
Linkage Methods ◽  
The Family ◽  
First Time

A data matrix of 23 generic or subgeneric taxa versus 24 characters and a shorter matrix of 15 characters were analyzed by means of ordination, cluster analyses, parsimony, and compatibility methods (the last two of which are phylogenetic tree reconstruction methods) and the results were compared inter alia and with traditional methods. Various measures of fit for evaluating the parsimony methods were employed. There were few compatible characters in the data set, and much homoplasy, but most analyses separated a group based on Stylaria from the rest of the family, which could then be separated into four groups, recognized here for the first time as tribes (Naidini, Derini, Pristinini, and Chaetogastrini). There was less consistency of results within these groups. Modern methods produced results that do not conflict with traditional groupings. The Jaccard coefficient minimizes the significance of symplesiomorphy and complete linkage avoids chaining effects and corresponds to actual similarities, unlike single or average linkage methods, respectively. Ordination complements cluster analysis. The Wagner parsimony method was superior to the less flexible Camin–Sokal approach and produced better measure of fit statistics. All of the aforementioned methods contain areas susceptible to subjective decisions but, nevertheless, they lead to a complete disclosure of both the methods used and the assumptions made, and facilitate objective hypothesis testing rather than the presentation of conflicting phylogenies based on the different, undisclosed premises of manual approaches.

The Cochlostoma (Holcopoma) westerlundi group in Italy (Caenogastropoda: Cochlostomatidae)

Biologia ◽  
2014 ◽  
Vol 69 (6) ◽  
Author(s):  
Mariastella Colomba ◽  
Fabio Liberto ◽  
Armando Gregorini ◽  
Walter Renda ◽  
Agatino Reitano ◽  
...  
Keyword(s):  
16S Rdna ◽  
Southern Italy ◽  
Genetic Distances ◽  
Morphological Data ◽  
Molecular Evidence ◽  
Systematic Classification ◽  
Phylogenetic Status ◽  
First Time ◽  
Reproductive Apparatus

AbstractCurrently, the Cochlostoma (Holcopoma) westerlundi (Paulucci, 1879) group includes three subspecies inhabiting southern Italy up to southeastern Sicily. C. w. westerlundi (Paulucci, 1879) is limited to southern Calabria, C. w. yapigium (Westerlund, 1885) is widespread across the Salento (the southeastern extremity of the Apulia region) and C. w. dionysii (Paulucci, 1879) is endemic to the environs of Siracusa (SE Sicily). There is also a fourth taxon, C. paganum (Westerlund, 1885) described for Otranto (LE, Apulia), considered a synonym of C. w. yapigium. Up to now, the molecular genetics of C. westerlundi s.l. have been unknown and the morphological data of several populations are still lacking. Hence, the systematic classification of the group is tentative. Aiming at filling this gap, mtDNA (16S rDNA and COI) partial sequences were investigated and, in addition, the reproductive apparatus of C. w. westerlundi was described for the first time. Molecular sequences and anatomical data were used to test the taxonomic and phylogenetic status of the examined populations. Maximum Likelihood and Bayesian analysis revealed three clusters, strongly supported, corresponding to the three taxa. For the first time, synonymy between paganum and yapigium was confirmed by molecular evidence. Genetic distances between groups (DxyJC) ranged from 2.6% to 5% (16S rDNA) and from 6.3% to 8.3% (COI). Molecular and morphological data led us to suggest elevating the three subspecies to the species rank.

The comparative morphology of the male and female postabdomen of the Australian Tachinidae (Diptera), with descriptions of some first-instar larvae and pupae

1988 ◽  
Vol 2 (1) ◽  
pp. 81 ◽  
Author(s):  
BK Cantrell
Keyword(s):  
Comparative Morphology ◽  
Instar Larva ◽  
Taxonomic Position ◽  
Specific Level ◽  
Male And Female ◽  
First Instar ◽  
New Information ◽  
The Family ◽  
First Time

The comparactive morphology of the male and female postabdomen of the Australian Tachinidae was studied in a survey which included 152 species of representative genera from all subfamilies except Dufouriinae. The value of the structure of the postabdomen for the higher classification of the family was ascertained, and new information gained which has allowed a better understanding of the correct taxonomic position of some problem groups of tachinids. It was possible to recognise suites of characters for each sex to define each subfamily, but this was not possible at tribal or generic levels in most groups. The male terininalia are diagnostic at specific level. The survey also allowed the discovery of, or confirmed, the reproductive habit of the included genera and provided information on the first-instar larva of 52 species, many of which larvae are described below for the first time. Characters of puparia which may have taxonomic value are discussed and illustrated.

An X-ray examination of some potash-soda-felspars

1939 ◽  
Vol 25 (165) ◽  
pp. 338-350 ◽  
Author(s):  
S. H. Chao ◽  
D. L. Smare ◽  
W. H. Taylor
Keyword(s):  
Systematic Classification ◽  
X Ray ◽  
Natural Minerals ◽  
Thermal Investigations ◽  
Potash Felspar ◽  
Complete Survey ◽  
The Subject ◽  
First Time ◽  
Ray Methods

The systematic classification of the potash-soda-felspars is of the greatest interest and importance to the mineralogist, but problems demanding physical investigation are raised in work carried out recently by Dr. Edmondson Spencer, who has described the results of exhaustive chemical, optical, and thermal investigations of a representative collection of these minerals. Dr. Spencer has very kindly allowed us to examine by X-ray methods a large number of his specimens, so that for the first time it has been possible to make a fairly complete survey of potash-soda-felspars of known chemical composition and with accurately measured optical properties.This paper presents the results of our general survey of potash-soda-felspars with compositions ranging from nearly pure potash-felspar to approximately 50 % soda-felspar. The natural minerals, and the same minerals after specified heat-treatment, have been examined. We do not discuss in detail the interpretation of our results in terms of the atomic structure of felspars; the subject is extremely complicated, and it is necessary to await the results of other investigations now in progress in this laboratory before attempting a complete structural interpretation.

A STUDY OF THE SYSTEMATICS OF THE WATER MITE FAMILY PIONIDAE (PROSTIGMATA: PARASITENGONA)

1976 ◽  
Vol 108 (S98) ◽  
pp. 1-249 ◽  
Author(s):  
Ian M. Smith
Keyword(s):  
Morphological Data ◽  
Water Mite ◽  
Male Adult ◽  
The Family ◽  
Species Groups ◽  
Three New Species ◽  
First Time ◽  
Insight Into ◽  
Mite Family

AbstractA phylogeny is proposed for the 30 species groups in the 13 genera here included in the family Pionidae. The phylogeny is based upon a detailed analysis of available morphological data for larval and adult stages according to the methodology advocated by Hennig. This methodology is outlined and discussed. The proposed phylogeny provides the basis for a revised classification of the pionids and permits new insight into certain biological manifestations of phylogeny, namely habitat diversification, life history modification, and geographic distribution, in the group.Original descriptions are provided for the larvae of 41 pionid species (20 for the first time) representing 24 species groups in eight genera. Three new species, Wettina ontario n. sp., Forelia pinguipalpis n. sp., and Tiphys cooki n. sp., are described along with the previously undescribed male adult of Pseudofeltria multipora Cook and female adults of Forelia cayuga Habeeb and Forelia onondaga Habeeb. Keys and new diagnoses are presented for pionid genera and species groups. Keys to the larvae and adults, and new distributional data, are included for the pionid species known to occur in Ontario.

A new predatory leech from Vietnam (Hirudinida : Arhynchobdellida : Salifidae): its phylogenetic position with comments on the classification of the family

2015 ◽  
Vol 29 (5) ◽  
pp. 473 ◽  
Author(s):  
Takafumi Nakano ◽  
Son Truong Nguyen
Keyword(s):  
Phylogenetic Relationships ◽  
Phylogenetic Analyses ◽  
Morphological Characteristics ◽  
Molecular Data ◽  
Phylogenetic Position ◽  
12S Rrna ◽  
The Family ◽  
Morphological And Molecular Data ◽  
First Time

The family Salifidae is a predaceous leech taxon in the suborder Erpobdelliformes. Although Salifidae is widely distributed in the African, Oriental, Indo-Malayan, Sino-Japanese and Australasian regions, the phylogenetic relationships of the family Salifidae have never been tested using molecular data obtained from leeches collected from the family distributional range. A salifid species was collected for the first time in Vietnam, and relevant morphological and molecular data are presented here. Because the Vietnamese salifid species possesses unique morphological characteristics among the known salifid species, this species is herein described as a new species, Salifa motokawai, sp. nov. Phylogenetic analyses based on nuclear 18S rRNA and histone H3, as well as mitochondrial cytochrome c oxidase subunit I, tRNACys, tRNAMet, 12S rRNA, tRNAVal, 16S rRNA, tRNALeu and NADH dehydrogenase subunit 1 markers demonstrate that the Vietnamese salifid species is a close congener with the African Salifa perspicax and the Malagasy Linta be. Furthermore, molecular data revealed non-monophyly of the Asian salifid leeches. According to the observed phylogenetic relationships and morphological characteristics of the Vietnamese Salifa motokawai, sp. nov., the current classification of salifid taxa should be revised.

scholarly journals First record of Cithaeron reimoseri (Araneae: Cithaeronidae) from the New World and first record of the family from southern Brazil

Check List ◽  
2013 ◽  
Vol 9 (6) ◽  
pp. 1594 ◽  
Author(s):  
Ricardo Ott ◽  
Antonio Domingos Brescovit
Keyword(s):  
New World ◽  
Rio Grande ◽  
First Record ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Porto Alegre ◽  
Worldwide Distribution ◽  
The Family ◽  
First Time ◽  
Median Eyes

The African spider Cithaeron reimoseri Platnick, 1991 is registered for the first time in the New World, based in two females collected at Porto Alegre, Rio Grande do Sul, Brazil. Until now C. reimoseri was known only by the holotype from Eritrea. The species C. praedonius O. P.-Cambridge, 1872 was, until now, the only known species of the family with worldwide distribution and is considered prone to introduction in anthropic environments. Cithaeronidae are considered lower gnaphosoids being identifiable by the depressed posterior median eyes and the pseudosegmented tarsi.

scholarly journals Phylogenetic evidence for an expanded circumscription of Gabura (Arctomiaceae)

2020 ◽  
Vol 52 (1) ◽  
pp. 3-15
Author(s):  
Nicolas Magain ◽  
Toby Spribille ◽  
Joseph DiMeglio ◽  
Peter R. Nelson ◽  
Jolanta Miadlikowska ◽  
...  
Keyword(s):  
South Africa ◽  
North America ◽  
Molecular Taxonomy ◽  
Distinct Species ◽  
New Combinations ◽  
Morphological Convergence ◽  
The Family ◽  
Phylogenetic Lineages ◽  
First Time

AbstractSince the advent of molecular taxonomy, numerous lichen-forming fungi with homoiomerous thalli initially classified in the family Collemataceae Zenker have been transferred to other families, highlighting the extent of morphological convergence within Lecanoromycetes O. E. Erikss. & Winka. While the higher level classification of these fungi might be clarified by such transfers, numerous specific and generic classifications remain to be addressed. We examined the relationships within the broadly circumscribed genus Arctomia Th. Fr., which has been the recipient of several transfers from Collemataceae. We demonstrated that Arctomia insignis (P. M. Jørg. & Tønsberg) Ertz does not belong to Arctomia s. str. but forms a strong monophyletic group with Gabura fascicularis (L.) P. M. Jørg. We also confirmed that Arctomia borbonica Magain & Sérus. and the closely related Arctomia insignis represent two species. We formally transferred A. insignis and A. borbonica to the genus Gabura Adans. and introduced two new combinations: Gabura insignis and Gabura borbonica. We reported Gabura insignis from Europe (Scotland and Ireland) for the first time. While material from Europe and North America is genetically almost identical, specimens from Madagascar, South Africa and Reunion Island belong to three distinct phylogenetic lineages, all of which are present in the latter area and may represent distinct species. In its current circumscription, the genus Gabura may contain up to six species, whereas Arctomia s. str. includes only two species (A. delicatula Th. Fr. and A. teretiuscula P. M. Jørg.). The Gabura insignis group is shown to have an unexpectedly large, subcosmopolitan distribution. With the extended sampling from Arctomiaceae Th. Fr., the placement of Steinera sorediata P. James & Henssen in the genus Steinera Zahlbr. is confirmed and the presence of a new Steinera species from Chile is highlighted.

The occurrence of dopaminergic interplexiform cells correlates with the presence of cones in the retinae of fish

1995 ◽  
Vol 12 (2) ◽  
pp. 359-369 ◽  
Author(s):  
Eleonore Fröhlich ◽  
Koroku Negishi ◽  
Hans-Joachim Wagner
Keyword(s):  
Biological Rhythms ◽  
Plexiform Layer ◽  
Amacrine Cells ◽  
Inner Plexiform Layer ◽  
Systematic Classification ◽  
Dopaminergic Cells ◽  
Eye Growth ◽  
Cartilaginous Fishes ◽  
First Time

AbstractUsing light-microscopic immunocytochemistry against tyrosine hydroxylase, we have investigated the morphology of dopaminergic cells in 23 species of fishes representing various systematic classes and subclasses and which live in very different habitats. We have, for the first time, observed teleosts with dopaminergic amacrine cells. Thus, in both bony and cartilaginous fishes, dopaminergic cells are differentiated as interplexiform and amacrine cells. The differentiation of dopaminergic cells into amacrine or interplexiform cells in fishes correlates with the absence or presence of cones. In pure-rod retinae, they occur as amacrine cells, and in mixed rod/cone retinae, they occur as interplexiform cells. We conclude therefore that the differentiation of retinal dopaminergic cells in fish does not depend on the evolutionary or systematic classification of a given species. Rather, it is correlated with the occurrence of rods and/or cones, and thus linked more closely to the habitat. We argue that, in fish, the presence of cones and cone-specific horizontal cells may be responsible for inducing dopaminergic cells to differentiate as interplexiform cells. Possible functions of dopamine in all-rod retinae, which may not require adaptation, may include neuromodulation in the inner plexiform layer for the sensitization of the rod pathway, the shaping of biological rhythms, and the control of eye growth.

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