Taxonomic revision of two endemic land snail genera from the Top End of Northern Australia with remarks on two problematic species named by de Férussac and Le Guillou (Eupulmonata, Camaenidae)

2012 ◽  
Vol 88 (1) ◽  
pp. 53-62 ◽  
Author(s):  
Frank Köhler
Keyword(s):  
Taxonomic Revision ◽  
Land Snail ◽  
Northern Australia

scholarly journals Crypsis and convergence: integrative taxonomic revision of the Gehyra australis group (Squamata: Gekkonidae) from northern Australia

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e7971 ◽  
Author(s):  
Paul M. Oliver ◽  
Audrey Miranda Prasetya ◽  
Leonardo G. Tedeschi ◽  
Jessica Fenker ◽  
Ryan J. Ellis ◽  
...  
Keyword(s):  
Geographic Variation ◽  
Taxonomic Revision ◽  
Substantial Improvement ◽  
Morphological Evidence ◽  
Northern Australia ◽  
Geographic Boundaries ◽  
Snp Data ◽  
Exon Capture ◽  
Species Complexes ◽  
Genetic Clusters

For over two decades, assessments of geographic variation in mtDNA and small numbers of nuclear loci have revealed morphologically similar, but genetically divergent, intraspecific lineages in lizards from around the world. Subsequent morphological analyses often find subtle corresponding diagnostic characters to support the distinctiveness of lineages, but occasionally do not. In recent years it has become increasingly possible to survey geographic variation by sequencing thousands of loci, enabling more rigorous assessment of species boundaries across morphologically similar lineages. Here we take this approach, adding new, geographically extensive SNP data to existing mtDNA and exon capture datasets for the Gehyra australis and G. koira species complexes of gecko from northern Australia. The combination of exon-based phylogenetics with dense spatial sampling of mitochondrial DNA sequencing, SNP-based tests for introgression at lineage boundaries and newly-collected morphological evidence supports the recognition of nine species, six of which are newly described here. Detection of discrete genetic clusters using new SNP data was especially convincing where candidate taxa were continuously sampled across their distributions up to and across geographic boundaries with analyses revealing no admixture. Some species defined herein appear to be truly cryptic, showing little, if any, diagnostic morphological variation. As these SNP-based approaches are progressively applied, and with all due conservatism, we can expect to see a substantial improvement in our ability to delineate and name cryptic species, especially in taxa for which previous approaches have struggled to resolve taxonomic boundaries.

Redefinition and revision of Lydda Westwood, 1840 with taxonomic notes on Diostrombus Uhler, 1896 (Homoptera: Fulgoroidea, Derbidae)

1992 ◽  
Vol 23 (2) ◽  
pp. 185-213
Author(s):  
Jan Van Stalle
Keyword(s):  
Taxonomic Revision ◽  
New Guinea ◽  
Female Genitalia ◽  
New Combinations ◽  
Northern Australia ◽  
Male And Female ◽  
New Subgenus

AbstractA redefinition and taxonomic revision is given of the genus Lydda. Twenty-one species are attributed to this genus occurring in New Guinea and northern Australia. The zoraidine genera with short antennae are keyed and all Lydda species are keyed and redescribed with emphasis on the male and female genitalia. Four species are described as new: Lydda perlucida, L. guttata, L. cornuta and L. fusca; 16 species are transferred from Proutista to Lydda given 16 new combinations. P. awarensis Van Stalle, 1986 is synonymized with L. gemina Muir, 1913. Arfaka Distant, 1907 and Afakia Kirkaldy, 1909, former synonyms of Proutista are now considered as synonyms of Lydda. The Afrotropical species attributed to Lydda are transferred to Diostrombus, new subgenus Lyddastrombus, giving seven more new combinations. Proutista jezeki Dlabola, 1979 and P. jezeki Dlabola, 1981 are transferred to Diostrombus s. str., giving D. jezeki (Dlabola) comb. n. and D. adila (Dlabola) comb. n. A lectotype is selected for Lydda elongata, Lydda perkinsi, L. lutea, L. lurida, L. decisa, L. straminea, L. lumholtzi, L. australis, L. gemina, L. koebelei, L. calypso and Philadelpheia pandani. Diostrombus muiri nom. n. is proposed for D. cocos Muir, 1928, a secondary junior homonym of D. cocos (Muir, 1926) comb. n.

Phylogenetic systematics of the land snail Basedowena from the Australian arid zone: taxonomic revision with description of new taxa (Stylommatophora : Camaenidae)

2016 ◽  
Vol 30 (4) ◽  
pp. 370 ◽  
Author(s):  
Francesco Criscione ◽  
Frank Köhler
Keyword(s):  
New Taxa ◽  
Arid Zone ◽  
New South ◽  
South Australia ◽  
Taxonomic Revision ◽  
Land Snail ◽  
Shell Shape ◽  
Mountain Ranges ◽  
South Wales ◽  
Mitochondrial Phylogeny

The land snail Basedowena Iredale, 1937 currently comprises eight species that inhabit mountain ranges in the central Australian arid zone. By studying the variation in shell and genital anatomy and the differentiation in the mitochondrial markers 16S and COI, we revise the taxonomy of this camaenid and describe new taxa. We demonstrate that the current morphology-based classification has been misled by homoplasy mainly in shell shape. In fact, Basedowena as herein revised contains species with vastly different shells, which have so far been assigned to different genera. By contrast, these species have the same general genital anatomy in common and form a clade in the mitochondrial phylogeny. Based on these findings, we transfer Pleuroxia bethana, P. hinsbyi, P. elfina, P. oligopleura, P. polypleura, P. radiata, Montanomelon angatjana and Minimelon colmani to Basedowena. While Pleuroxia and Montanomelon are maintained as distinct genera, although with fewer species, the monotypic Minimelon becomes a junior synonym of Basedowena. We identify and describe three new Basedowena species (B. bicolor, sp. nov., B. holoserica, sp. nov., B. siparium, sp. nov.). A fourth new species differs substantially from all other arid zone camaenids and is hence placed in a new genus, Xeromelon, gen. nov. The revised delineation of Basedowena renders it now the most widespread camaenid genus in Australia. It is distributed throughout the Australian arid zone from Western Australia, via the Northern Territory and South Australia into New South Wales.

A revision of Adriana (Euphorbiaceae)

1996 ◽  
Vol 9 (5) ◽  
pp. 749 ◽  
Author(s):  
CL Gross ◽  
MA Whalen
Keyword(s):  
Leaf Morphology ◽  
New South ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Northern Australia ◽  
Floral Structure ◽  
Diagnostic Features ◽  
Distribution Maps ◽  
South Wales ◽  
Variation Patterns

Adriana (Euphorbiaceae) is an endemic Australian genus of dioecious shrubs found widely throughout the mainland. Results of a taxonomic revision of Adriana are presented and a new taxonomy is proposed in which three taxa are recognised. Adriana quadripartita (Labill.) Muell. Arg. is a southern Australian, predominantly coastal taxon. Adriana tomentosa Gaudich. is a widely distributed species that exhibits considerable variation in leaf morphology and indumentum, in contrast to basic floral structure which is similar throughout the species, and it comprises two varieties. Adriana tomentosa var. tomentosa is a coastal and inland taxon with a distribution along both eastern and western seaboards and in northern Australia. Adriana tomentosa var. hookeri (F.Muell.) C.L.Gross & M.A.Whalen is an inland taxon occurring in the dry interior from Western Australia to New South Wales. A key to these taxa, descriptions and distribution maps are provided. Morphological variation patterns, the delimitation of taxa and the utility of different morphological characters as diagnostic features in Adriana are discussed.

A taxonomic revision of the Capparis spinosa group (Capparaceae) from eastern Africa to Oceania

Phytotaxa ◽  
2015 ◽  
Vol 203 (1) ◽  
pp. 24 ◽  
Author(s):  
Silvio Fici
Keyword(s):  
Middle East ◽  
Taxonomic Revision ◽  
Western Himalaya ◽  
Wide Distribution ◽  
Eastern Africa ◽  
Northern Australia ◽  
The Pacific ◽  
Western Asia ◽  
Capparis Spinosa ◽  
Wide Distribution Range

The variability, autecology and distribution of the Capparis spinosa group have been studied in eastern Africa, Madagascar, southern Asia, Australia and Oceania. In these areas the taxonomic treatment of the group, also represented in holoarctic Regions of the Old World, is still critical. The forms widespread in the study area are here referred to four subspecies of C. spinosa. The recognized subspecies mostly show geographical vicariance, except in some contact areas of the Middle East and western Himalaya. Two nomenclatural novelties, i. e. C. spinosa subsp. cordifolia comb. et stat. nov. and C. spinosa subsp. himalayensis stat. nov., are proposed. Among the recognized taxa, C. spinosa subsp. cartilaginea shows a wide distribution range including eastern Africa, Madagascar, south-western Asia to Pakistan and India, C. spinosa subsp. cordifolia is widespread in the Pacific from Indonesia eastwards to Pitcairn Islands and Hawaii, C. spinosa subsp. nummularia is recorded from western, central and northern Australia, C. spinosa subsp. himalayensis is known from Pakistan, India and Nepal.

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