Morphology and phylogeny of two new species of Sphaeromyxa Thélohan, 1892 (Cnidaria: Myxozoa) from marine fish (Clinidae and Trachichthyidae)

Parasitology ◽  
2014 ◽  
Vol 142 (5) ◽  
pp. 660-674 ◽  
Author(s):  
PAVLA BARTOŠOVÁ-SOJKOVÁ ◽  
ALENA KODÁDKOVÁ ◽  
HANA PECKOVÁ ◽  
ROMAN KUCHTA ◽  
CÉCILE C. REED

SUMMARYOur survey of marine fish from South Africa and Indonesia revealed the presence of two new myxosporean species of the genus Sphaeromyxa for which we provide morphological and sequence data. Sphaeromyxa clini n. sp. detected in three Clinus spp. and Muraenoclinus dorsalis from South Africa is morphologically similar to Sphaeromyxa noblei previously described from Heteroclinus whiteleggii from Australia and to several other sphaeromyxids with arcuate spores and rounded ends. This similarity is reflected by phylogenetic positioning of S. clini n. sp. which clusters within the ‘incurvata’ group of the Sphaeromyxa clade. It differs from morphologically similar species by spore and polar capsule dimensions, host specificity and geographic distribution. Sphaeromyxa limocapitis n. sp., described from Gephyroberyx darwinii from Java, is morphologically similar to sphaeromyxids with straight spores and to marine Myxidium species with spindle-shaped spores but differs from them by spore and polar capsule dimensions, host specificity and geographic distribution. S. limocapitis n. sp. represents a separate lineage of the Sphaeromyxa clade and appears to be a missing link in the evolution of sphaeromyxids.

Zootaxa ◽  
2017 ◽  
Vol 4350 (3) ◽  
pp. 500
Author(s):  
JULISSA M. CHURATA-SALCEDO ◽  
LUCIA M. ALMEIDA ◽  
GUILLERMO GONZÁLEZ ◽  
ROBERT D. GORDON

The subgenus Sidonis Mulsant, 1850 is elevated to generic status and two new species from Brazil are described and illustrated: Sidonis bira sp. nov. and Sidonis biguttata sp. nov. New geographic distribution records are provided. In addition, lectotypes of Sidonis consanguinea (Mulsant, 1850) and S. guttata (Sicard, 1912) are designated. Illustrations of diagnostic characters from five of six species of the genus, comments on the differences from similar species and a key to all recognized taxa are included.  


2017 ◽  
Vol 22 (10) ◽  
pp. 1560
Author(s):  
Sergey G. Ermilov ◽  
Elizabeth A. Hugo-Coetzee ◽  
Pieter D. Theron

The present study is based on oribatid mite material (Acari, Oribatida) collected from moss (Sphagnum sp.) on the seepage area below a permanent spring in South Africa. A list of identified taxa, including 17 species from 15 genera and 11 families, is presented; of these, six species (Haplochthonius simplex, Trhypochthoniellus longisetus, Tyrphonothrus maior, Neoamerioppia polygonata, Trachyoribates ovulum, Trichogalumna nipponica) and three genera (Haplochthonius, Trhypochthoniellus, Trachyoribates) are recorded in the fauna of this country for the first time, and three species (Malaconothrus hexasetosus, Mucronothrus braziliensis, Limnozetes ciliatus,), three genera (Mucronothrus, Limnozetes, Nesozetes) and one family (Nesozetidae) are recorded in the Ethiopian region for the first time. Two new species belonging to the genera Trhypochthoniellus and Hydrozetes are described. Trhypochthoniellus malaconothroiformis sp. nov. differs from the morphologically most similar species, Trhypochthoniellus ramosus Hammer, 1982 by the absence of strongly branched notogastral and leg setae, and the presence of seven pairs of genital setae. Hydrozetes sphagnicolus sp. nov. differs from all known species of Hydrozetes by the much longer notogastral setae with attenuate tips.


1978 ◽  
Vol 52 (2) ◽  
pp. 131-139 ◽  
Author(s):  
R. A. Bray

ABSTRACTEnenterum elsti sp. nov. and E. prudhoei sp. nov. are described from the intestine of Neoscorpis lithophilus off Mapelane, Natal, South Africa. These species differ from others of the genus Enenterum in the ratio of the oral sucker to body-length and in the length of the prepharynx. E. elsti differs from. E. prudhoei in size, in sucker-ratio and in the number and configuration of the oral lobes. A key to the species of Enenterum is presented and the status of the genus briefly discussed.


1977 ◽  
Vol 28 (3) ◽  
pp. 361 ◽  
Author(s):  
PC Heemstra ◽  
JE Randall

The marine fish family Emmelichthyidae is redefined to include only the genera Emmelichthys (four species), Erythrocles (four species) and Plagiogeneion (two species). Two new species of Emmelichthys from the Pacific Ocean are described. Emmelichthys nitidus Richardson is divided into two subspecies: E. nitidus nitidus occurring from South Africa to New Zealand and E. nitidus cyanescens (Guichenot) from the Juan Fernandez Islands and coast of Chile. Descriptions and keys to the genera and species are provided.


Phytotaxa ◽  
2015 ◽  
Vol 230 (3) ◽  
pp. 239 ◽  
Author(s):  
Juan Julián Bordallo ◽  
Antonio Rodríguez ◽  
Vasileios Kounas ◽  
Francisco Camello ◽  
Mario Honrubia ◽  
...  

Two new species of Terfezia, Terfezia grisea and Terfezia cistophila, are documented from Spain and Greece, based on morphology and ITS-rDNA sequence data. Macro and micro descriptions with illustrations and ITS phylogenetic data for the two species are provided, which are discussed in relation to similar species in this genus and their host plants.


2021 ◽  
Vol 782 ◽  
pp. 157-172
Author(s):  
Aniket Ghosh ◽  
Kanad Das ◽  
Bart Buyck

Two species, namely Russula adwanitekae A.Ghosh, K.Das & Buyck sp. nov. and Russula purpureozonata K.Das, A.Ghosh & Buyck sp. nov. are proposed herein as new mushroom taxa from the Indian Himalaya based on their morphological features and ITS-based phylogenetic inferences. Both species belong to the crown clade of Russula subgenus Russula but with affinities to different subsections, viz. subsect. Laricinae Romagn. and subsect. Decolorantes Maire, respectively. Russula adwanitekae sp. nov. was collected in mixed temperate forests where it is most likely associated with conifers. It is distinct from several similarly looking, small, mild species with dark spore print and reddish lilac, orchid purple or greyish to deep magenta colored pileus in subsect. Laricinae by its sequence data (nrITS) or geographic distribution. Russula purpureozonata sp. nov. associates with Abies densa Griff., and possesses all typical features of Decolorantes, viz. the amyloid suprahilar spot on the spores, presence of pileogloeocystidia, the reddening then blackening context, equal lamellae and colored spore print. It reminds of North American R. californiensis Burl. and R. magna Beardslee under the microscope but has distinctly smaller spores and differs further in the unique coloration and concentrically zonated pileus margin. Macro- and micromorphological features are illustrated for both species. Their habitats, distributions and relationships with allied species are discussed.


2020 ◽  
Vol 45 (1) ◽  
pp. 75-84
Author(s):  
Llorenç Sáez ◽  
Javier López-Alvarado ◽  
Pere Fraga ◽  
Regina Berjano ◽  
M. Ángeles Ortiz ◽  
...  

Abstract—Two new diploid species, Aira minoricensis and Aira hercynica, are described and illustrated, along with chromosome counts, risk assessment, distribution and habitat, phenology, and comparisons with morphologically similar species. A comparative table and a key for the species of Aira for the Iberian Peninsula and the Balearic Islands are provided to assist in the identification of these overlooked species, and their relationships to other taxa are discussed.


Zootaxa ◽  
2004 ◽  
Vol 728 (1) ◽  
pp. 1
Author(s):  
E. Akingbohungbe

Namaquaropus niger gen nov. & sp.nov. is described from South Africa. In addition, two new species of the subgenus Jehania Distant of Isometopus Fieber (I. mirus sp. nov. and I. maculipennis sp. nov.), and Paloniella flavicolor sp. nov. are described. With these, the known species of Isometopinae in South Africa now number sixteen.


Zootaxa ◽  
2020 ◽  
Vol 4821 (3) ◽  
pp. 487-510
Author(s):  
JINGHUAI ZHANG ◽  
PAT HUTCHINGS ◽  
INGO BURGHARDT ◽  
ELENA KUPRIYANOVA

In May–June 2017 an expedition on board RV ‘Investigator’ sampled benthic communities along the lower slope and abyss of eastern Australia from off Tasmania to the Coral Sea. Over 200 sabellariid specimens of the genera Phalacrostemma and Gesaia were collected during the voyage and deposited in the Australian Museum. Here we describe two new species Gesaia csiro n. sp. (4414–4436 m) and Phalacrostemma timoharai n. sp. (1013–1093 m). We did not formally describe another species of Phalacrostemma due to poor condition of the single specimen. Gesaia csiro n. sp. is the first record of the genus from Australian waters (only a planktonic larva attributed to the genus has previously been recorded), and it can be distinguished from other congeners by the smooth surface of inner paleae, distal thecae of outer paleae with long, irregular and expanded distal fringe and circled distal margin. Phalacrostemma timoharai n. sp. differs from congeners by the following combination of characters: presence of the buccal flap, absence of tentacular filament, 18–22 pairs of outer paleae, two pairs of neuropodial cirri on first thoracic segment, and only one pair of lateral lobes on second thoracic segment. Morphological descriptions are accompanied by mitochondrial cytochrome c oxidase subunit 1 (COI) and ribosomal (16S, 18S and 28S) sequence data. A key to all Australian species of sabellariids is given.


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