A morphological assessment of the Olearia phlogopappa complex (Asteraceae: Astereae)

2013 ◽  
Vol 26 (1) ◽  
pp. 31 ◽  
Author(s):  
Andre Messina ◽  
Neville G. Walsh ◽  
Susan E. Hoebee ◽  
Peter T. Green
Keyword(s):  
Species Complex ◽  
Morphological Characters ◽  
Species Boundaries ◽  
Morphometric Study ◽  
Isolated Populations ◽  
New Subspecies ◽  
South Eastern ◽  
Eastern Australia ◽  
Morphological Assessment ◽  
Infraspecific Taxonomy

A morphometric study of the Olearia phlogopappa species complex from throughout south-eastern Australia has confirmed species boundaries and resolved the infraspecific taxonomy of two species. It has shown O. phlogopappa (Labill.) DC., O. stellulata (Labill.) DC., O. lirata (Sims) Hutch., O. rugosa (F.Muell. ex W.Archer bis) Hutch. and O. brevipedunculata N.G.Walsh to be non-overlapping entities with unique morphological characters. O. stellulata is circumscribed to include only southern and western Tasmanian populations and those from the Otways and Wilsons Promontory in southern Victoria. O. rugosa is restricted to Victoria and a few isolated populations on Flinders Island and northern Tasmania. Four previously noted variants of O. rugosa from Victoria are here described as subspecies, along with the description of a fifth subspecies from northern Tasmania. Infraspecific boundaries of O. phlogopappa are here revised to include nine subspecies, six of which were previously included as varieties, and descriptions are made of three new subspecies.

scholarly journals Morphometric study of Euchiton traversii complex (Gnaphalieae: Asteraceae)

2008 ◽  
Vol 21 (3) ◽  
pp. 178 ◽  
Author(s):  
Christina Flann ◽  
Ilse Breitwieser ◽  
Josephine M. Ward ◽  
Neville G. Walsh ◽  
Pauline Y. Ladiges
Keyword(s):  
New Zealand ◽  
Species Complex ◽  
Distinct Species ◽  
Morphometric Study ◽  
Herbarium Specimens ◽  
Phenetic Analysis ◽  
South Eastern ◽  
Alpine Regions ◽  
Eastern Australia ◽  
South Eastern Australia

A morphometric study was undertaken into alpine and subalpine species of Euchiton Cass. (Gnaphalieae: Asteraceae) in the Euchiton traversii species complex in south-eastern Australia and New Zealand. Phenetic analysis of both field-collected and herbarium specimens resolved the following six taxa included: Euchiton traversii (Hook.f.) Holub, Euchiton argentifolius (N.A.Wakef.) Anderb., Euchiton lateralis (C.J.Webb) Breitw. & J.M.Ward, Argyrotegium mackayi (Buchanan) J.M.Ward & Breitw., Argyrotegium fordianum (M.Gray) J.M.Ward & Breitw. and Argyrotegium poliochlorum (N.G.Walsh) J.M.Ward & Breitw. The results support the segregation of the genus Argyrotegium J.M.Ward & Breitw. from Euchiton. E. argentifolius is distinct from E. traversii, but conspecific with A. mackayi. E. lateralis is present in Tasmania as well as New Zealand. The distribution of Australian E. traversii is redefined to mainland alpine regions with a few rare occurrences in Tasmania. Australian E. traversii was shown to be similar to its New Zealand counterparts. Differences between E. lateralis and E. traversii were clarified. A. fordianum and A. poliochlorum are distinct species and their transfer to Argyrotegium is supported.

The systematics, biogeography and conservation status of species in the freshwater crayfish genus Engaewa Riek (Decapoda : Parastacidae) from south-western Australia

2000 ◽  
Vol 14 (5) ◽  
pp. 655 ◽  
Author(s):  
Pierre Horwitz ◽  
Mark Adams
Keyword(s):  
Western Australia ◽  
Conservation Status ◽  
Aquatic Organisms ◽  
Morphological Characters ◽  
Species Boundaries ◽  
Entire Group ◽  
Freshwater Crayfish ◽  
Incipient Speciation ◽  
Genetic Groups ◽  
Eastern Australia

This paper presents a review of the systematics of freshwater crayfish species in the genus Engaewa Riek, endemic to south-western Australia. Allozyme electrophoresis of six allopatric populations of Engaewa and several outgroup taxa at 17 loci was initially used to identify four distinct genetic groups within the genus. Morphological characters were then used to establish within and between species boundaries more precisely. Five species were recognised, comprising the existing species E. subcoerulea Riek, E. reducta Riek, and E. similis Riek, plus two new species, E. pseudoreducta, sp. nov. and E. walpolea, sp. nov. The genus is endemic to south-western Australia where distributions of species conform to those expected for slowly dispersing, inland aquatic organisms wedded to year-round cool and wet conditions. The range of the genus occurs within the Warren Bioregion of Australia. The species occupy well-defined and largely non-overlapping geographical ranges. Within the bioregion, apparent incipient speciation exists in the Cape Naturaliste–Cape Leeuwin subregion, confirming a pattern observed for other aquatic organisms. Morphological and electrophoretic evidence suggests that species in the genus are more closely related to each other than they are to other species of extant freshwater crayfish, suggesting that they represent a monophyletic group. Nevertheless, the morphological variation displayed by Engaewa clearly falls within that found for the genus Engaeus Erichson from south-eastern Australia, indicating that a broad-scale generic revision for the entire group would be appropriate. The narrow geographical ranges of E. walpolea, sp. nov., E. pseudoreducta, sp. nov. and E. reducta, coupled with known threats to populations, warrant concern for these species from a conservation viewpoint. precisely.

A geometric morphometric evaluation on three populations of endemic species, Dorcadion micans (Cerambycidae, Coleoptera) in Ankara Province from Turkey with a new subspecies description

Zootaxa ◽  
2021 ◽  
Vol 5004 (1) ◽  
pp. 167-180
Author(s):  
ATILAY YAĞMUR OKUTANER ◽  
ASLI DOĞAN SARIKAYA ◽  
ÖZKAN SARIKAYA ◽  
HÜSEYIN ÖZDIKMEN
Keyword(s):  
Geometric Morphometrics ◽  
Endemic Species ◽  
Biological Evolution ◽  
Morphological Characters ◽  
Central Anatolia ◽  
Isolated Populations ◽  
Geometric Morphometric ◽  
New Subspecies ◽  
Biological Features ◽  
Morphometric Evaluation

Due to some biological features, species belonging to genus Dorcadion Dalman, 1817 (Coleoptera: Cerambycidae) can be easily divided into isolated populations. This can be considered as an important factor of speciation process and allows the observation of various effects of biological evolution of taxa. These effects can be measured on morphological characters with some different approaches such as geometric morphometrics. This study aims to determine pronotum and elytra shape differences of the samples of three isolated localities of Turkey (Akyurt, Bala, and Beynam) detected in Ankara, and to contribute to taxonomic and evolutionary knowledge of Dorcadion micans Thomson (1867) by evaluating the analysis of outcomes. As a result, significant differences between populations were detected both in pronotum and elytra. Besides, common variations were observed in some morphological characters of the Bala and Beynam populations, unlike Akyurt population. Accordingly, the distinguishing characters are discussed, and the following new subspecies is described: Dorcadion micans majoripunctum ssp. nov. from Ankara province in Northern part of Central Anatolia.

Morphological evaluation of the Drosera peltata complex (Droseraceae)

2012 ◽  
Vol 25 (1) ◽  
pp. 49 ◽  
Author(s):  
Robert Gibson ◽  
Barry J. Conn ◽  
Jeremy J. Bruhl
Keyword(s):  
New Zealand ◽  
Western Australia ◽  
Distinct Species ◽  
Morphological Characters ◽  
South Eastern ◽  
Morphological Evaluation ◽  
Granite Outcrops ◽  
Eastern Australia ◽  
North Eastern ◽  
South Eastern Australia

A phenetic study of morphological characters of the Drosera peltata complex (Droseraceae) supports the recognition of the following taxa: D. peltata from wetlands of south-eastern Australia; D. auriculata from south-eastern Australia and New Zealand; the morphologically variable D. hookeri from south-eastern Australia and northern New Zealand; the widespread D. lunata from southern and South-East Asia, as well as northern and north-eastern Australia; and the new species D. yilgarnensis R.P.Gibson & B.J.Conn is here described, from around granite outcrops of south-western Australia. D. bicolor from south-western Australia is recognised as a distinct species outside of the D. peltata complex. D. insolita, considered until recently as a distinct species, is reduced to synonymy of D. lunata. Phenotypic plasticity, vegetative similarity and fleetingly produced diagnostic floral and seed characters within the complex pose significant challenges in understanding the taxonomy of these taxa.

In situ morphometric study of the Diuris punctata species complex (Orchidaceae), with implications for conservation

2008 ◽  
Vol 21 (4) ◽  
pp. 289 ◽  
Author(s):  
Zoë F. Smith ◽  
Elizabeth A. James ◽  
Cassandra B. McLean
Keyword(s):  
Species Complex ◽  
Flower Colour ◽  
Population Level ◽  
Morphological Characters ◽  
Population Variation ◽  
Morphometric Study ◽  
Herbarium Specimens ◽  
Taxonomic Groups ◽  
Floral Characters

Taxa within the Diuris punctata species complex exhibit high levels of variation at both species and population level. Morphometric data collected in situ were used to investigate species boundaries of four Victorian Diuris species within the Diuris punctata species complex. Morphological characters and taxonomic groups identified in the present study were compared to those described under the current taxonomic treatment. Sixty-five multistate and continuous characters, including seven vegetative and 58 floral characters, were measured in situ across the range of each species within Victoria. The importance of flower colour in distinguishing taxa was highlighted but characters used were generally indiscrete. Certain characters used in current taxonomic descriptions, e.g. floral fragrance, were found to be uninformative. D. fragrantissima was confirmed as a separate taxon within the D. punctata group, justifying its recognition as a unique entity for conservation. Clustering of D. daltonii within D. punctata suggests that the recent elevation of the D. punctata var. daltonii to species level is not justified. The in situ measurement of morphological characters made it possible to incorporate sufficient sampling to encompass intra-specific and intra-population variation and is a feasible method to overcome sampling limitations encountered when herbarium specimens and limited destructive sampling are used.

Development of the egg if the stick insect Didyuris violescens with particular reference to diapause

1971 ◽  
Vol 19 (2) ◽  
pp. 141 ◽  
Author(s):  
JL Readshaw ◽  
GO Bedford
Keyword(s):  
Strong Support ◽  
Stick Insect ◽  
Isolated Populations ◽  
South Eastern ◽  
Eastern Australia ◽  
Outbreak Areas ◽  
Geographic Populations ◽  
Cool Summer ◽  
Diapause Development ◽  
South Eastern Australia

The paper provides a comprehensive account of the development of the egg of the phasmatid D, violescens, a serious defoliator of Euca~ptus forests in the highlands of south-eastern Australia. The occurrence of parthenogenesis and the incidence of the two diapauses are compared in several spatially isolated populations. The observed differences are consistent with the hypothesis that D. violescens has tended to lose its capability for parthenogenesis while developing its competence for diapause as the species extended its range from subtropical to temperate regions. This hypothesis receives strong support from a recent discovery that there are at least seven genetically distinct races of D. violescens in south-eastern Australia. The influence of constant temperatures on diapause development and embryogenesis is described for several geographic populations. Irrespective of the origin of the populations, the optimum temperature for diapause development is about 2"C, and embryogenesis proceeds more rapidly as temperatures increase from a lower threshold of about 7" to 27�C. Both processes can occur simultaneously at temperatures between the two optima. The following section shows the total effect of genotype and environment on the pattern of development and hatching in the field. In the southern outbreak areas the populations are of two kinds: highland populations, in which the occurrence of the two diapauses ensures that the eggs overwinter at least twice before hatching; and foothill populations, where the absence of the first diapause means that the eggs may overwinter either once or twice before hatching, depending on when they were laid during the summer. This partly explains how a particularly cool summer can initiate the 2-year cycling of population which is the most obvious characteristic of the outbreaks of D, violescens in south-eastern Australia.

Three new species of Fergusonina Malloch gall-flies (Diptera: Fergusoninidae) from terminal leaf bud galls on Eucalyptus (Myrtaceae) in south-eastern Australia

Zootaxa ◽  
2011 ◽  
Vol 3112 (1) ◽  
pp. 36 ◽  
Author(s):  
LEIGH A. NELSON ◽  
SONJA J. SCHEFFER ◽  
DAVID K. YEATES
Keyword(s):  
New Species ◽  
Host Specificity ◽  
Species Complex ◽  
The Other ◽  
Adult Size ◽  
Dorsal Shield ◽  
South Eastern ◽  
Eastern Australia ◽  
Three New Species ◽  
South Eastern Australia

Three new species of Fergusonina (Diptera: Fergusoninidae) flies are described from terminal leaf bud galls on Eucalyptus L'Hér. from south eastern Australia. Fergusonina omlandi Nelson and Yeates sp. nov. is the first species of fly from the genus Fergusonina to be described from the Eucalyptus pauciflora Sieb. ex Spreng. (Snow Gum) species complex; although another two species occur in sympatry on this host at higher elevations. Fergusonina omlandi sp. nov. can be distinguished from the latter by differences in adult size and markings on the mesonotum and morphology of the dorsal shield of the larva. The other new species, Fergusonina williamensis Nelson and Yeates sp. nov. and Fergusonina thornhilli Nelson and Yeates sp. nov. are the first flies to be described from Eucalyptus baxteri (Benth.) Maiden & Blakely and Eucalyptus dalrympleana Maiden, respectively. These two species can be distinguished from all other described Fergusonina by host specificity, adult colour and setation and morphology of the dorsal shield.

The Banksia integrifolia L.f. species complex (Proteaceae)

1994 ◽  
Vol 7 (4) ◽  
pp. 393 ◽  
Author(s):  
K Thiele ◽  
PY Ladiges
Keyword(s):  
Species Complex ◽  
New South ◽  
New South Wales ◽  
Morphological Characters ◽  
South Eastern ◽  
South Wales ◽  
North Eastern ◽  
Ordination Analysis

The Banksia integrifolia (Proteaceae : Grevilleoideae) species complex currently comprises three varieties: var. aquilonia from northern Queensland; var. integrifolia from coastal Victoria and New South Wales; and var. compar, which is polymorphic and comprises two forms, a coastal form from southern Queensland and a montane form from north-eastern New South Wales and south-eastern Queensland. Ordination analysis of morphological characters of adults and seedlings indicates that the montane populations of var. compar comprise a separate taxon, which is phenetically closer to var. integrifolia than it is to typical var. compar. Banksia integrifolia var. aquilonia is phenetically quite distinct from the remaining taxa. The new names and combinations Banksia integrifolia subsp. monticola K.R. Thiele, B. integrifolia subsp. aquilonia (A.S. George) K.R. Thiele and B. integrifolia subsp. compar (R.Br.) K.R. Thiele are published.

The Grey Kangaroo Overlap Zone

1984 ◽  
Vol 11 (1) ◽  
pp. 1 ◽  
Author(s):  
G Caughley ◽  
B Brown ◽  
P Dostine ◽  
D Grice
Keyword(s):  
New South ◽  
South Australia ◽  
Species Boundaries ◽  
Western Boundary ◽  
Strong Indication ◽  
South Eastern ◽  
South Wales ◽  
Grey Kangaroo ◽  
Eastern Australia ◽  
First Time

The distributions of the two species of grey kangaroo, Macropus giganteus of eastern Australia and M.fuliginosus of southern Australia. overlap in a zone of 0.68 X 10*6 km2 in south-eastern Australia, the zone including parts of South Australia. Victoria, New South Wales and Queensland. The species' boundaries determining the overlap zone are mapped and the geographic trends in density within it are determined for each of the two species. Whereas the western boundary of M. giganteus has moved inland this century, possibly as a response to an increased number ofwatering points, there is no strong indication that M. fuliginosus has extended its range significantly. The recent discovery of the latter species in Queensland over an area of 100 000 km2, reported here for the first time, need reflect nothing more than the difficulty of differentiating the two species in the field.

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