Genus

About: Genus is a research topic. Over the lifetime, 68921 publications have been published within this topic receiving 590966 citations. The topic is also known as: monospecies genus & genus (zoology).

A Revision of the gobiid fish genus Mugilogobius (Teleostei: Gobiolidei), and its systematic placement

Abstract: The gobiid fish genus Mugilogobius and 13 closely-related genera form a monophyletic group within the sub-family Gobionellinae of the family Gobiidae. Included with Mugilogobius in this group are the genera Brachygobius, Caecogobius, Calamiana, Chlamydogobius, Eugnathogobius, Gobiopterus, Hemigobius, Mistichthys, Pandaka, Pseudogobius, Redigobius, Stigmatogobius and Tamanka. These 14 genera are discussed and compared. The entire group consists of about 105 species, which have been greatly confused in the literature. Of these species, 12 are here described as new. The genera Calamiana, Chlamydogobius, Eugnathogobius, Hemigobius, Mugilogobius and Tamanka are revised, and full descriptions of the species included in each genus are provided. The genera Brachygobius, Caecogobius, Gobiopterus, Mistichthys, Pandaka, Pseudogobius, Redigobius and Stigmatogobius are diagnosed, nominal species are listed and an indication of the probable number of valid species given.Mugilogobius includes 25 species, of which eight are described as new. The genus is defined by a combination of characters. Most species of Mugilogobius occur in estuarine to fresh waters, with some species widespread in the Indo-west Pacific and others restricted to a single waterbody. There is a species-complex in the tectonic lakes of Sulawesi, characterised by vertebral pattern and several character reversals.Cladistic analyses of the Mugilogobius-group indicate that Chlamydogobius (restricted to Australia) is the sister-group to Mugilogobius. The monophyletic genus Tamanka is sister to the Mugilogobius-Chlamydogobius group. Hemigobius is the sister group to Pseudogobius. Brachygobius and Pandaka form a closely related group. Stigmatogobius is derived compared to Redigobius, a genus with the most plesiomorphic characters of the whole Mugilogobius-group. Eugnathogobius appears to be paraphyletic.The Gobionellinae thus includes the Mugilogobius-group and a second monophyletic group in which are placed the genera Awaous, Evorthodus, Ctenogobius, Gnatholepis, Gobionellus, Oligolepis, Oxyurichthys and Stenogobius. The relationship of Redigobius and Rhinogobius to these groups is somewhat equivocal. All these gobionellines share certain characters, particularly those of the dorsal pterygiophore formula, epural number, vertebral number, headpore arrangement and a tendency to occur in freshwater to estuarine habitats. .........

Immunological Relationships and Generic Revision of the Australian Lizards Assigned to the Genus Leiolopisma (Scincidae, Lygosominae)

Abstract: The phylogenetic relationships of the Australian scincid lizards currently assigned to the genus Leiolopisma have been examined by quantitative micro-complement fixation (MC'F) comparisons of serum albumin. The results of these comparisons do not support the monophyly implicit in these species' current congeneric status, but suggest instead that the Australian species of Leiolopisma belong to several distinct phyletic lineages within the Eugongylus group. These findings are supported by several sets of non-biochemical characters, including features of scalation, osteology and karyotype. None of the Australian species shares a close relationship with the type-species of Leiolopisrna (L. telfairii), and so a new taxonomic arrangement is proposed which distributes them among the following genera: Bartleia, gen. nov. (jigurru); Bassiana, gen. nov. (duperreyi, platynotum and trilineata); Cautula, gen. nov. (zia); Niveoscincus, gen. nov. (coventryi, greeni, metallicus, microlepidotus, ocellatus, orocryptus, palfreymani and pretiosus); and Pseudemoia Fuhn, 1967 (baudini, entrecasteauxii Group 1; entrecasteauxii Group 2, rawlinsoni and spenceri). Preliminary comparisons suggest that other Leiolopisma species, from New Caledonia, Lord Howe I. and New Zealand, belong to phyletic lineages which are distinct from any of the Australian 'Leiolopisma' and from the type-species.

Notes on resupinate Hymenomycetes—VI

Abstract: 1. The conidiophores which caused the publication of the genus Tomentella J.-Olsen apud Bref. bear no relation to the basidiferous states with which they were associated. They belong to Ostracoderma Fr. The names based on these associations are nomina confusa. — 2. Peniophorella P. Karst. is an other instance of a nomen confusum: it was based on Hyphoderma puberum to which species foreign spores were ascribed. These two-celled spores induced the introduction of the genus. Some additional species are referred to Hyphoderma Wallr. emend. (two new combinations). — 3. The name Phanerochaete P. Karst. is re-introduced for an as yet not sharply delimited genus, the possible characters and limits of which are discussed. — 4. It would appear that the correct name for Meruliopsis Bond. apud Parmasto is Caloporus P. Karst. The taxon is considered as yet ill-defined; it had better be included in Merulius Fr. for the time being. Karsten’s type species is identified with Merulius taxicola (Pers.) Duby. — 5. The genus Hericium Pers. per S. F. Gray, as now sometimes conceived, is broken up into three genera, Hericium s. str., Creolophus P. Karst., and Dentipellis Donk, gen. nov. (two new combinations), the latter a resupinate genus. Two of its species are discussed in some detail. — 6. It is concluded that Lowe misinterpreted Trametes squalens P. Karst., which is a pileate rather than a Poria species, conspecific with Polyporus anceps Peck, of a later date.