scholarly journals Introducing a new genus of Marginellidae from Africa: Africosta new genus (Gastropoda: Marginellidae) along with the description of two new species

The Festivus ◽  
2022 ◽  
Vol 54 (1) ◽  
pp. 7-20
Author(s):  
Stephan Veldsman

A small group Marginellidae species were moved between genera several times by different authors, described as Marginella, sometimes called Glabella, classified under Dentimargo, and also reclassified as being Eratoidea species. This group of very small Marginellidae has their own unique shell characteristics within the family, and are described here within a new genus: Africosta. Four known species are discussed along with the description of two new species from KwaZulu-Natal, South Africa within the new genus.

2011 ◽  
Vol 20 (2) ◽  
pp. 274-298
Author(s):  
A.G. Kirejtshuk

In the paper described are two new species of the genus Amphicrossus Erichson, 1843 (A. microtuberculatus sp. nov. from Sudan and A. uhligi sp. nov. from Zambia: Amphicrossinae), one new species of the genus Meligethinus Grouvelle 1906 (M. zimbabwensis sp. nov. from Zimbabwe: Meligethinae), one new species from the genus Neopallodes Reitter, Reitter, 1884 (N. madagascarensis sp. nov. from Madagascar: Nitidulinae, Cyllodini) and one species of the new genus Gonoglypha gen. nov. (G. distinctissima sp. nov. from Australia (Queensland): Nitidulinae, Cychramptodini). In the paper also some addition to the description of Meligethinus dolosus Grouvelle, 1919 from the eastern part of South Africa and some comments on significance of different characters, taxonomy and classifications of some groups of the family Nitidulidae are included.


Zootaxa ◽  
2007 ◽  
Vol 1459 (1) ◽  
pp. 37-68 ◽  
Author(s):  
GEOFF A. BOXSHALL ◽  
ANDREY MARCHENKOV

A new genus of parasitic copepod, Paranoplodelphys, is established in the family Notodelphyidae to accommodate a new, highly reduced species, P. simplex n. gen. et n. sp., collected from a tunicate host, Didemnum dicolla in Djibouti. The new genus retains only four paired limbs: antennules, legs 1, 2 and 5. Two new species of Anoplodelphys, A. afri-cana and A.laubieri, are described from tunicate hosts of the genus Didemnum collected in the Gulf of Suez and off the Kwazulu-Natal coast, respectively. A new species of Achelidelphys, A. papuensis, is described from a Didemnum species host collected off Papua New Guinea. New records are also reported for Anoplodelphys corneci and Achelidelphys steinitzi also from tunicate hosts. After re-examination of type material of most species, a phylogenetic analysis of relationships between the genera of the Brementia-group was performed using PAUP. This identified four main clades: Brementia, Anoplodelphys, Paranoplodelphys and the Achelidelphys-clade. There was no support for the continued recognition of Cephalodelphys and Syndelphys as valid separate genera, and it is proposed to treat as them synonyms of Achelidelphys. Both genera were monotypic and upon transfer Cephalodelphys stellata Lafargue & Laubier, 1977 becomes Achelidelphys stellata (Lafargue and Laubier, 1977) n. comb. and Syndelphys reducta Lafargue and Laubier, 1977 becomes Achelidelphys reducta (Lafargue and Laubier, 1977) n. comb.


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.


Author(s):  
Carol Simon ◽  
Guillermo San Martín ◽  
Georgina Robinson

Two new species of South African Syllidae of the genusSyllisLamarck, 1818 are described.Syllis unzimasp. nov. is characterized by having unidentate compound chaetae with long spines on margin, a characteristic colour pattern and its reproduction by vivipary. Vivipary is not common among the polychaetes, but most representatives occur in the family Syllidae Grube, 1850 (in five otherSyllisspecies, two species ofDentatisyllisPerkins, 1981 and two species ofParexogoneMesnil & Caullery, 1818).Syllis unzimasp. nov. differs from the other viviparous species in having large broods (>44 juveniles) which develop synchronously. Development of the juveniles is similar to that of free-spawningSyllisspecies, but the appearance of the first pair of eyespots and the differentiation of the pharynx and proventricle occur later inS. unzima.Syllis amicarmillarissp. nov., is characterized by having an elongated body with relatively short, fusiform dorsal cirri and the presence of one or two pseudosimple chaeta on midbody parapodia by loss of blade and enlargement of shaft.Syllis unzimasp. nov. was found in high densities on culturedHolothuria scabraJaeger, 1833 with single specimens found on a culturedCrassostrea gigasThunberg, 1793 and on coralline algae, respectively, whileS. amicarmillariswas found mainly in sediment outside an abalone farm and less frequently on culturedHaliotis midaeLinnaeus, 1758. We discuss the possible benefits of the association withH. scabratoS. unzimasp. nov.


1959 ◽  
Vol S7-I (3) ◽  
pp. 252-259 ◽  
Author(s):  
Raymond Enay

Abstract Describes ammonites belonging to the family Tulitidae from Bathonian (Jurassic) localities of France. Specimens formerly attributed to Ammonites microstoma are assigned to the new genus Treptoceras, with two new species T. laurenti and T. crimaciense A complete specimen of Schwandorfia marginata is also described. The genera Sphaeroptychius, Schwandorfia, and Treptoceras are considered diagnostic of the middle and upper Bathonian.


Zootaxa ◽  
2012 ◽  
Vol 3504 (1) ◽  
pp. 56 ◽  
Author(s):  
YAPING CAI ◽  
YUNYUN ZHAO ◽  
CHUNGKUN SHIH ◽  
DONG REN

A new genus Mirabythus Cai, Shih et Ren, gen. nov. (type species, M. lechrius Cai, Shih et Ren, sp. nov.) and M. liae Cai, Shih et Ren, sp. nov. from the family Scolebythidae are described from the Early Cretaceous Yixian Formation of Huangbanjigou Village, Liaoning Province, northeastern China. These findings extend the existence of Scolebythidae to the Early Cretaceous of China, while providing evidence to support Engel and Grimaldi’s hypothesis that the family was widely distributed throughout the Cretaceous. Our two new species with clear venation also provide a comprehensive understanding of the venational changes from the Early Cretaceous to now. A key to the fossil and extant genera of Scolebythidae is provided.


Zootaxa ◽  
2020 ◽  
Vol 4728 (2) ◽  
pp. 227-236
Author(s):  
FRANCISCO LIMEIRA-DE-OLIVEIRA ◽  
DAYSE WILLKENIA A. MARQUES ◽  
STEPHEN D. GAIMARI ◽  
JOSÉ A. RAFAEL

A new genus of odiniids (Odiniidae: Traginopinae) is described from Brazil, Pauximyia gen. nov., with two species, P. oliveirai sp. nov. (type species) and P. vidali sp. nov. A modified key to the Neotropical genera of the family and for the two Pauximyia gen. nov. species is provided. 


Zootaxa ◽  
2020 ◽  
Vol 4885 (4) ◽  
pp. 579-590
Author(s):  
ALLEN F. SANBORN ◽  
MARTIN H. VILLET

Ingcainyenzane irhiniensis n. gen., n. sp. and Ingcainyenzane nolukhanyoensis n. gen., n. sp. are described from Eastern Cape and Ingcainyenzane umgeniensis n. gen., n. sp. is described from KwaZulu-Natal, South Africa. Notes on its biology of the species and a key to species of the genus are also provided. 


Zootaxa ◽  
2011 ◽  
Vol 3032 (1) ◽  
pp. 47 ◽  
Author(s):  
CAROLINA NIETO ◽  
TOMÁŠ DERKA

Baetidae is one of the most diverse families of Ephemeroptera. In South America this family now encompasses 27 genera and more than 130 species. The Guyana region is known for its extraordinary diversity and high level of endemism, which is, above all, remarkable at the tops of the isolated flat-topped table mountains – tepuis. Recently various international speleological expeditions to Churí-tepui explored the cave systems of this mountain. Here we describe a new genus of Baetidae recently found during the mentioned expeditions to Churí-tepui and Auyán-tepui. Parakari n. gen. can be distinguish from the other genera of this family, among other characters, in the nymphs by the absence of abdominal gills I, tarsal claws with subapical denticle larger than the others, right mandible with prostheca bifid and pectinate and with incisors positioned in obtuse angle to mola area, lingua with a tuft of setae, segment II of maxillary palpi with a concavity and a hole apically and segment II of labial palpi with a strong distomedial projection. In the adults the hind wings are absent and genitalia with segment II of forceps with a constriction, segment III elongate and long. Two new species are included in this genus; each one was collected at different tepui. A key and illustrations are included.


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