Taxonomic revision of Australian species of Atyoida Randall (Crustacea : Decapoda : Atyidae), the genera Atyoida and Atya Leach

1982 ◽  
Vol 33 (2) ◽  
pp. 343 ◽  
Author(s):  
MJ Smith ◽  
WD Williams
Keyword(s):  
Life Cycle ◽  
Morphological Variation ◽  
Hawaiian Islands ◽  
Taxonomic Revision ◽  
Diagnostic Characters ◽  
Australian Species ◽  
Life Cycle Strategy ◽  
Distinguishing Features ◽  
Pacific Area

A reconsideration of the diagnostic characters of Atya Leach and Atyoida Randall supports their generic separation. Accordingly, Atyoida is reinstated as a full genus of which the distinguishing features are slender third peraeopods with a relatively short merus, a tapering endopod in the male first pleopod and protandry. It includes three species, A. bisulcata Randall from the Hawaiian Islands, A. pilipes (Newport) widespread in the Indo-Pacific area, and A. striolata (McCulloch & McNeill) found only in Australia. A. striolata is fully redescribed. Morphological variation throughout its range is slight; no subspecies are distinguishable. It is suggested that larvae hatch in estuaries and that protandry is an adaptive life-cycle strategy.

Revision of the Australian species of the fish family Leiognathidae

1985 ◽  
Vol 36 (4) ◽  
pp. 559 ◽  
Author(s):  
G Jones
Keyword(s):  
Identification Key ◽  
Body Proportions ◽  
Fish Family ◽  
Tooth Shape ◽  
Diagnostic Characters ◽  
Australian Species ◽  
The Family ◽  
Species Descriptions ◽  
Incorrect Usage ◽  
Distinguishing Features

The Australian species of Leiognathidae are revised and their distinguishing features more clearly defined. Fifteen Australian species are recognized: Gazza minuta, Leiognathus aureus, L. bindus, L. blochii, L. decorus, L. elongatus, L. equulus, L. fasciatus, L. leuciscus, L. smithursti, L. splendens, Leiognathus sp., Secutor insidiator and S. ruconius. Diagnostic characters for the species are difficult to ascertain as the family tends to be meristically constant. Identification relies principally on a combination of body proportions, distribution of scales, tooth shape and arrangement, and body pigmentation patterns. Species descriptions, figures, abbreviated synonymies and geographic distributions within Australia are presented for all species, and an identification key is given. Incorrect usage in the literature of several species names, including L. elongatus, L. brevirostris and L. lineolatus, is discussed.

A taxonomic revision of Stenoglottis (Orchideae, Orchidoideae, Orchidaceae)

Phytotaxa ◽  
2020 ◽  
Vol 456 (3) ◽  
pp. 219-243 ◽  
Author(s):  
DEAN P. PHILLIPS ◽  
BENNY BYTEBIER
Keyword(s):  
Phylogenetic Analysis ◽  
Morphological Variation ◽  
Species Delimitation ◽  
Taxonomic Revision ◽  
Diagnostic Characters

Based on a published morphological and phylogenetic analysis, species delimitation in Stenoglottis is here revised, and five species (six taxa) are now recognized: S. fimbriata (with two varieties), S. longifolia, S. inandensis, S. woodii, and S. macloughlinii. Stenoglottis fimbriata subsp. saxicola and S. zambesiaca are synonymised here with S. fimbriata, S. modesta is reduced in rank to S. fimbriata var. modesta and S. molweniensis is synonymised with S. longifolia. The three spurred species, S. inandensis, S. woodii and S. macloughlinii, are retained. We include revised descriptions, diagnoses and a morphological key, in which characteristics of the floral spurs, labella, leaves, bracts, and auricles contribute most clearly to distinguishing the taxa. Distributions maps and photos showing important diagnostic characters and morphological variation are also presented.

Life Cycle Strategy

2015 ◽  
pp. 1-6
Author(s):  
Derek F. Channon ◽  
John McGee ◽  
Tanya Sammut-Bonnici
Keyword(s):  
Life Cycle ◽  
Life Cycle Strategy

scholarly journals Revision of Diphaulacosoma Jacoby, an endemic flea beetle genus from Madagascar, with description of three new species (Coleoptera: Chrysomelidae, Galerucinae, Alticini)

2016 ◽  
Vol 48 (2) ◽  
pp. 143 ◽  
Author(s):  
Maurizio Biondi ◽  
Paola D'Alessandro
Keyword(s):  
New Species ◽  
Electron Micrographs ◽  
Flea Beetle ◽  
Taxonomic Revision ◽  
Scanning Electron Micrographs ◽  
Diagnostic Characters ◽  
New Material ◽  
Three New Species ◽  
Scanning Electron

A taxonomic revision of the flea beetle genus <em>Diphaulacosoma</em> Jacoby, endemic to Madagascar, is provided. This genus includes seven species of which three are new to science: <em>D. elegans</em> sp. n., <em>D. jenisi</em> sp. n., and <em>D. nigroscutis</em> sp. n. An updated catalogue including new material, new faunistic records, distributions, chorotypes, and ecological notes is supplied. Lectotypes for <em>Diphaulacosoma</em> <em>laevipenne</em> Jacoby, <em>D. bicolor</em> (Weise) and <em>D. scutellare</em> (Weise) are designated. Additionally, the revision comprises a key for the identification of all seven species considered, habitus photos, and microscope and scanning electron micrographs of diagnostic characters, including aedeagus and spermatheca.

Taxonomic revision of four species of the Neotropical land planarian genera Cratera and Geoplana (Platyhelminthes, Tricladida) with a description of two new species and an emendation of Cratera

Zootaxa ◽  
2018 ◽  
Vol 4500 (4) ◽  
pp. 517 ◽  
Author(s):  
DOMINGO LAGO-BARCIA ◽  
FERNANDO CARBAYO
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Morphological Feature ◽  
Ejaculatory Duct ◽  
Taxonomic Revision ◽  
Undescribed Species ◽  
Terminal Portion ◽  
Two New Species ◽  
A New Species ◽  
Land Planarian

The Brazilian land planarians Cratera crioula, C. joia, Geoplana hina, and G. taxiarcha (Platyhelminthes, Tricladida, Geoplanidae) are revised taxonomically from type material and additional specimens. Geoplana hina sensu Carbayo et al. (2013) was found to be an undescribed species and therefore is described and named as Cratera picuia sp. n. A new species of the genus is also described and named as Cratera arucuia sp. n. G. hina and G. taxiarcha are transferred to Cratera. The most remarkable morphological feature of Cratera—a dilated terminal portion of the ejaculatory duct—is either absent, inconspicuous, or variable in C. hina, C. joia, C. picuia sp. n., and C. arucuia sp. n. Based on the monophyletic status of Cratera inferred elsewhere, an emendation of the genus is here proposed to encompass the morphological variation observed in the genus. 

scholarly journals Limnocalanus macrurus (Copepoda: Calanoida) retains a marine arctic lipid and life cycle strategy in Lake Michigan

1998 ◽  
Vol 20 (8) ◽  
pp. 1581-1597 ◽  
Author(s):  
Henry A. Vanderploeg ◽  
Joann F. Cavaletto ◽  
James R. Liebig ◽  
Wayne S. Gardner
Keyword(s):  
Life Cycle ◽  
Lake Michigan ◽  
Life Cycle Strategy ◽  
Limnocalanus Macrurus

scholarly journals First record of Proechimys pattoni da Silva, 1998 (Rodentia, Echimyidae) in northwestern Bolivia

Check List ◽  
2018 ◽  
Vol 14 (6) ◽  
pp. 1115-1121
Author(s):  
Pamela Sánchez-Vendizú ◽  
Joseph A. Cook ◽  
James Wood ◽  
Jorge Salazar-Bravo
Keyword(s):  
Morphological Variation ◽  
First Record ◽  
Geographic Range ◽  
Lowland Forest ◽  
Molecular Analyses ◽  
First Report ◽  
Diagnostic Characters ◽  
Madre De Dios ◽  
Distributional Range ◽  
Biogeographic Region

Proechimys pattoni da Silva, 1998 is one of the 3 small-bodied species of Proechimys and its geographic range is only known in western Brazil and eastern and southern Peru. However, based on morphological and molecular analyses, we report P. pattoni from the lowland forest of Bolivia (Pando: Rio Madre de Dios, near San Rosa). This is the first report of P. pattoni in Bolivia and extends its distributional range 315 km to the southeast in the Amazon biogeographic region of Bolivia, representing the southeastern most record. Furthermore, we document the karyotype (2n = 40 / FN = 56) and morphological variation in diagnostic characters.

Studies on Lagenophrys tattersalli sp. n. (Ciliata Peritricha, Vorticellinae) Part I. Structure, Asexual Reproduction and Metamorphosis

1942 ◽  
Vol s2-83 (330) ◽  
pp. 171-196
Author(s):  
A. G. WILLIS
Keyword(s):  
Life Cycle ◽  
Asexual Reproduction ◽  
Marginal Zone ◽  
De Novo ◽  
Contractile Vacuole ◽  
Cholesterol Esters ◽  
Marine Ciliate ◽  
Reserve Material ◽  
Diagnostic Characters ◽  
Superficial Area

1. The diagnostic characters of a new marine ciliate, Lagenophrys tattersalli, have been described. The lorica is chiefly distinguished by the possession of a ventral shelf, a clearly defined central cap and a marginal zone formed during metamorphosis. The adoral spiral of about two turns is distinguished by the possession of an undulating membrane. 2. The macronucleus consists of a chromatin network with a plastin component in the form of interspersed spherical plasmosomes. 3. Eeserve substances are present at certain stages of the life cycle in the form of spheres composed of mixtures of fats and h'poids (chiefly cholesterol and cholesterol esters). The reserve substances accumulate during the trophic period and reach their maximum abundance prior to division. 4. Asexual reproduction takes place by two types of division leading in each case to the separation of motile organisms or swarmers and non-motile residual organisms. 5. The swarmer is always provided with a considerable quantity of fatty and lipoid reserve material. This is derived by the equal or unequal partition of the reserve material of the parent. 6. The peristome and ciliary girdle of the swarmer are formed from the division of the peristome and adoral spiral, respectively, of the parent and do not arise de novo. 7. It is maintained that the ciliary girdle of L. tattersalli does not correspond to the true ventral cilia of forms like Trichodina. 8. The ciliary girdle of the swarmer is disposed around a cavity (the sucker cavity) which was originally continuous with the vestibule of the parent. The ciliary girdle and the contractile vacuole of the swarmer are associated with the sucker cavity in the same way as the adoral spiral and contractile vacuole of the parent are associated with the vestibule. 9. In metamorphosis the sucker cavity of the swarmer becomes distended, probably bj the secretion of fluid. This growth cavity, as it may be termed, increases the superficial area of the protoplasm until the dimensions of the adult lorica are attained. The marginal zone of the lorica is laid down at this period and the growth cavity afterwards decreases in size. The adoral spiral of the adult is formed from the ciliary girdle of the swarmer after the cilia of the latter have become absorbed. The growth cavity is absorbed into the vestibule. 10. The reserve materials of the swarmer are completely used up before the end of metamorphosis.

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