scholarly journals A revision of the genus Astatoreochromis (Teleostei, Cichlidae), East–Africa

2013 ◽  
Author(s):  
Gaspard Bayankimbona ◽  
Emmanuel Vreven ◽  
Jos Snoeks
Keyword(s):  
Lake Tanganyika ◽  
Lake Victoria ◽  
Taxonomic Revision ◽  
Valid Species ◽  
Type Specimens ◽  
Morphometric Measurements ◽  
Lake Victoria Region ◽  
Clear Differentiation ◽  
Pharyngeal Jaw ◽  
Comparable Size

A taxonomic revision of the cichlid genus Astatoreochromis is presented. Eighteen meristic and 23 morphometric measurements were taken on 185 individuals, including type specimens. While fin counts separate populations from the Lake Victoria region (Astatoreochromis alluaudi) from those of the Rusizi and Malagarazi rivers in the Lake Tanganyika basin (A. vanderhorsti and A. straeleni respectively), clear differentiation was not detected between the latter two. Mann-Whitney U-tests on specimens of comparable size from the two Tanganyika populations revealed significant differences in specimens < 75 mm SL, mainly in pharyngeal jaw proportions, but also in some other measurements on the head and body. However, these differences were not detected in specimens > 75 mm SL and Astatoreochromis vanderhorsti is herein considered a junior synonym of A. straeleni. A redescription of the two valid species of Astatoreochromis, A. alluaudi and A.straeleni, is provided.

A taxonomic revision of the genus Zyzzyzus Stechow, 1921 (Cnidaria: Hydrozoa: Tubulariidae)

Zootaxa ◽  
2007 ◽  
Vol 1627 (1) ◽  
pp. 1-22 ◽  
Author(s):  
CARLOS J.A. CAMPOS ◽  
ANTONIO C. MARQUES ◽  
ALVARO E. MIGOTTO
Keyword(s):  
Type Species ◽  
Taxonomic Revision ◽  
External Morphology ◽  
Western Pacific ◽  
Type Material ◽  
Valid Species ◽  
Nominal Species ◽  
Type Specimens ◽  
Additional Material ◽  
Northwest Atlantic

The hydrozoan genus Zyzzyzus is revised based on reexaminations of all available type specimens and on additional material. The taxon includes four valid species: Zyzzyzus spongicolus (von Lendenfeld, 1884), from the eastern Indian and southwest Pacific oceans; the type species, Z. warreni Calder, 1988, from the Atlantic, western Indian, and western Pacific oceans; and Z. floridanus Petersen, 1990 and Z. robustus Petersen, 1990, both from the northwest Atlantic. Although type specimens of Z. calderi Petersen, 1990 could not be located, it has been assigned here to the synonymy of Z. warreni because of similarities between the two in nematocyst dimensions, in number and structure of endodermal canals, and in external morphology of the hydrocaulus and hydrorhiza. A sixth nominal species (Corymorpha iyoensis Yamada, 1958) has on one occasion been assigned to the genus, but detailed studies of the type material are needed to resolve its taxonomic affinities.

scholarly journals Taxonomic revision and zoogeographical patterns of the species of Gnopharmia Staudinger, 1892 (Geometridae, Ennominae)

Zootaxa ◽  
2012 ◽  
Vol 3360 (1) ◽  
pp. 1 ◽  
Author(s):  
HOSSEIN RAJAEI SH. ◽  
DIETER STÜNING ◽  
ROBERT TRUSCH
Keyword(s):  
New Records ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Female Genitalia ◽  
Valid Species ◽  
Type Specimens ◽  
Genetic Studies ◽  
Entire Area ◽  
Distribution Maps ◽  
Morphological Studies

The genus Gnopharmia Staudinger, 1892 is revised, based on more than 2000 specimens from the entire area ofdistribution and study of type material of all described taxa, as far asmap available. Seven species and three subspeciesare confirmed as valid for the genus. All important morphological characters have been studied and compared, includingmale and female genitalia. In addition, preliminary results of DNA-Barcoding were used to reassess our taxonomicdecisions, based on morphological studies. Type specimens and their labels are illustrated and additional specimens,demonstrating the variability of certain species, are also figured. Male genitalia of all valid species are figured and SEMphotos of the aedeagus are illustrated. Further important structures, the so-called ‘octavals’ on the male pre-genitalabdomen, are also figured. Female genitalia revealed a high similarity between species, combined with a considerablevariability, and were unsuitable for characterisation of species. Female genitalia of three species are figured to exemplifythis situation. As a result of the morphological and genetic studies, 12 out of the 21 described species and subspecies aresynonymised or transferred to the closely related genus Neognopharmia Wehrli, 1953. In addition, G. colchidariacocandaria (Erschoff, 1874) is revived as a valid species, G. sinesefida Wehrli, 1941 is downgraded to a subspecies of G.colchidaria Lederer, 1870. Five new records for the fauna of the following countries are presented: G. colchidariaobjectaria: new for Pakistan; G. irakensis: new for Turkey and Pakistan; G. kasrunensis: new for Oman and G. sarobiana: new for Pakistan. Distribution maps and an identification key are given for all species.

scholarly journals Back to Tanganyika: a case of recent trans-species-flock dispersal in East African haplochromine cichlid fishes

2015 ◽  
Vol 2 (3) ◽  
pp. 140498 ◽  
Author(s):  
Britta S. Meyer ◽  
Adrian Indermaur ◽  
Xenia Ehrensperger ◽  
Bernd Egger ◽  
Gaspard Banyankimbona ◽  
...  
Keyword(s):  
Lake Tanganyika ◽  
Lake Victoria ◽  
Species Flock ◽  
East African ◽  
Cichlid Species ◽  
African Great Lakes ◽  
Cichlid Fishes ◽  
Haplochromine Cichlid ◽  
Lake Victoria Region ◽  
Adaptive Radiations

The species flocks of cichlid fishes in the East African Great Lakes are the largest vertebrate adaptive radiations in the world and illustrious textbook examples of convergent evolution between independent species assemblages. Although recent studies suggest some degrees of genetic exchange between riverine taxa and the lake faunas, not a single cichlid species is known from Lakes Tanganyika, Malawi and Victoria that is derived from the radiation associated with another of these lakes. Here, we report the discovery of a haplochromine cichlid species in Lake Tanganyika, which belongs genetically to the species flock of haplochromines of the Lake Victoria region. The new species colonized Lake Tanganyika only recently, suggesting that faunal exchange across watersheds and, hence, between isolated ichthyofaunas, is more common than previously thought.

scholarly journals Taxonomic revision of the genus Oodera Westwood, 1874 (Hymenoptera, Chalcidoidea, Pteromalidae, Cleonyminae), with description of ten new species

2018 ◽  
Vol 63 ◽  
pp. 73-123 ◽  
Author(s):  
Jennifer Werner ◽  
Ralph S. Peters
Keyword(s):  
Papua New Guinea ◽  
Central African Republic ◽  
Taxonomic Status ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Valid Species ◽  
Key To Species ◽  
Type Specimens ◽  
The World ◽  
Nomina Dubia

The world species ofOoderaWestwood, 1874 (Chalcidoidea: Pteromalidae: Cleonyminae: Ooderini) are revised. We examined 115 specimens of this rarely collected genus and based on morphological characters assign 110 specimens to 20 recognised species, of which the following ten are described as new:Ooderacircularicollissp. n.(Morocco),O.felixsp. n.(Central African Republic),O.fidelissp. n.(Vietnam),O.floreasp. n.(Thailand),O.heikewerneraesp. n.(Botswana and South Africa),O.leibnizisp. n.(Papua New Guinea, Malaysia and Phillippines),O.mkomaziensissp. n.(Tanzania),O.namibiensissp. n.(Namibia),O.niehuisorumsp. n.(Egypt and Israel), andO.srilankiensissp. n.(Sri Lanka).OoderamonstrumNikol’skaya, 1952, syn. n., is synonymised underO.formosa(Giraud, 1863). Five specimens could not be assigned to species and are treated asOoderasp. Redescriptions are provided for all previously described valid species.OoderaalbopilosaCrosby, 1909 is excluded fromOoderaand transferred toEupelmusDalman, 1820 (Eupelmidae) asE.albopilosa(Crosby, 1909) n. comb.OoderarufimanaWestwood, 1874 andO.obscuraWestwood, 1874 are treated asnomina dubiabecause we were unable to locate type specimens and the original descriptions are not sufficiently informative to clarify the taxonomic status of these names. Several specimens from North America are identified as introduced specimens of the European speciesO.formosa. We provide images and diagnostic characters for all 20 included species and an identification key to species.

scholarly journals Astatotilapia species (Teleostei, Cichlidae) from Malawi, Mozambique and Tanzania, excluding the basin of Lake Victoria.

2021 ◽  
Author(s):  
George Turner ◽  
Benjamin P Ngatunga ◽  
Martin J Genner
Keyword(s):  
Great Lake ◽  
Lake Tanganyika ◽  
Lake Victoria ◽  
River System ◽  
Lake Malawi ◽  
Fish Farm ◽  
Type Locality ◽  
Sister Taxon ◽  
Type Specimens ◽  
Haplochromine Cichlid

The haplochromine cichlid fauna of the rivers and smaller lakes of Tanzania and SE Africa are of key importance in understanding the origins and inter-relationships of the great lake cichlid radiations of Malawi, Tanganyika and Victoria. Prior to formal taxonomic investigations, here we present the results of investigations of the type specimens, identification of type localities and superficial characterisation of freshly-collected material. The type locality of Astatotilapia bloyeti (Sauvage, 1883) is identified as the Mkondowa River, near Kilosa. This species appears to be the only haplochromine found in the Wami system. It is concluded that junior synonyms of A. bloyeti include A. strigigena (Pfeffer, 1893), A. kilossana (Steindachner, 1915) and A. paludinosa Greenwood, 1980. Astatotilapia sparsidens (Hilgendorf, 1905) is closely related and may constitute a junior synonym or a sister taxon. The range of A. bloyeti includes the Pangani system. The type locality for Astatotilapia gigliolii (Pfeffer, 1896) is identified as the Kingani River, or southern Ruvu, where it appears to be the only haplochromine in the river system. Junior synonyms include Astatotilapia vollmeringi (Steindachner, 1915) from the Great Ruaha River at Kidatu and Astatotilapia tweddlei Jackson, 1985 from Lakes Chilwa and Chiuta. The species is also reported from the lower part of the Rufiji system, the Ruvuma system and from other lakes and rivers in between. A few specimens were also collected in and around a fish farm at Songea, in the upper reaches of the Ruhuhu system (Lake Malawi catchment). Apart from this record, the only Astatotilapia species in the Lake Malawi catchment is A. calliptera. Four undescribed Astatotilapia species are identified from the Rufiji system, while other possibly undescribed taxa from the basins of Lake Tanganyika and Rukwa are discussed.

A new species of Dichelyne (Nematoda, Cucullanidae) parasitizing sciaenid fishes from off the South American Atlantic coast

2009 ◽  
Vol 54 (1) ◽  
Author(s):  
Juan Timi ◽  
Ana Lanfranchi ◽  
Luiz Tavares ◽  
José Luque
Keyword(s):  
New Species ◽  
Atlantic Coast ◽  
Length Distribution ◽  
Distribution Patterns ◽  
Nematode Species ◽  
Valid Species ◽  
South American ◽  
Type Specimens ◽  
Pacific Waters ◽  
A New Species

AbstractA new nematode species Dichelyne (Cucullanellus) sciaenidicola sp. nov. is described based on specimens collected from the Whitemouth croaker Micropogonias furnieri (Desmarest) and the Argentine croaker Umbrina canosai Berg, from coastal waters of Argentina and Brazil. These nematodes were firstly identified as D. (C.) elongatus (Törnquist, 1931), a commonly reported species from M. furnieri in South American Atlantic waters. However, other species of Dichelyne have so far been reported from this host in the same area, namely D. (C.) rodriguesi (Pinto, Fábio et Noronha, 1970), D. (C.) amaruincai (Freitas, Vicente et Ibañez, 1969) and D. (Dichelyne) micropogonii Pereira et Costa, 1996. A careful re-examination of these parasites, as well as of type specimens of all species reported from M. furnieri, revealed that these nematodes represented a new species. The new species is distinguished from most of its congeners by having papillae 5–7 and 9 forming a subventral line close to cloaca, this feature is shared with other 6 species [D. (C.) dichelyneformis (Szidat, 1950), D. (C.) fraseri (Baylis, 1929), D. (C.) abbreviatus (Rudolphi, 1819), D. (C.) adriaticus (Törnquist, 1931), D. (C.) minutus (Rudolphi, 1819) and D. (C.) mariajuliae Alarcos, Timi, Etchegoin et Sardella, 2006)], which are readily distinguished by their body size, spicules length, distribution patterns of other papillae and position of the excretory pore and deirids. Also, D. (C.) elongatus from Umbrina canariensis (Valenciennes) from West Africa is established as a new species Dichelyne (Cucullanellus) yvonnecampanae sp. nov.; D. (C.) amaruincai from Pacific waters is considered as a valid species, D. (D.) micropogonii is regarded as species inquirendae and D. (C.) rodriguesi is identified as Cucullanus sp.

A new species and new records ofMagelona(Annelida: Magelonidae) from Chabahar Bay, Gulf of Oman, South-eastern Iran

2016 ◽  
Vol 97 (7) ◽  
pp. 1537-1552
Author(s):  
Arash Shakouri ◽  
Kate Mortimer ◽  
Esmaeil Dehani
Keyword(s):  
New Species ◽  
Dna Analysis ◽  
Valid Species ◽  
Type Specimens ◽  
Gulf Region ◽  
Gulf Of Oman ◽  
Chabahar Bay ◽  
Eastern Iran ◽  
Iranian Coast ◽  
The Persian Gulf

The infauna of Chabahar Bay (Iranian Coast of the Gulf of Oman) was investigated using shallow water (less than 10 m) grab-samples between June 2013 and March 2014. The magelonid fauna of these samples was studied and prioritized, with four species being present:M. fauchaldisp. nov.,M. symmetrica, M.cf.cinctaandM. crenulifrons. The new species differs from all known magelonid species within the Persian Gulf region in possessing polydentate abdominal hooks. A fifth species, currently undescribed, was also found. The validity ofM. pulchellaoriginally described from Kuwait is discussed in light of its closeness toM. crenulifrons. The main distinguishing feature between the two species is the presence or absence of crenulation of the anterior prostomial margin, a character shown to be variable inM. crenulifrons. Although differences between the type specimens of both species suggestsM. pulchellato be a valid species, examination of further material and DNA analysis is needed.

A revision of the gobiid fish genus Pseudogobius (Teleostei, Gobiidae, Tridentigerinae), with description of seven new species from Australia and South-east Asia

Zootaxa ◽  
2021 ◽  
Vol 4961 (1) ◽  
pp. 1-85
Author(s):  
HELEN K. LARSON ◽  
MICHAEL P. HAMMER
Keyword(s):  
New Species ◽  
Feedback Loop ◽  
Valid Species ◽  
Nominal Species ◽  
Type Specimens ◽  
Gobiid Fish ◽  
West Pacific ◽  
Close Proximity ◽  
Tropical Areas ◽  
Initial Focus

The tridentigerine genus Pseudogobius is widespread, from temperate to tropical areas of the Indo-west Pacific. A morphological review of the genus was carried out, with the initial focus on South-east Asian and Australian species. There are about 21 nominal species in the genus; however, the type specimens for some nominal species are missing. Our work recognises 15 valid species so far, including seven new species, which are described herein: P. aquilonius n. sp., P. cinctus n. sp., P. eos n. sp., P. hoesei n. sp., P. jeffi n. sp., P. rhizophora n. sp. and P. verticalis n. sp. We also conclude that P. poicilosoma (Bleeker, 1849) is the senior synonym of P. javanicus (Bleeker, 1856). Pseudogobius poicilosoma, P. gastrospilos (Bleeker, 1853) and P. javanicus are accepted here as conspecific, although the types are in poor condition (note that all three names were given to specimens collected within close proximity to each other in coastal Java, Indonesia). A key to valid species is presented. The revision benefited from an adaptive feedback loop with companion genetic analyses, with the most comprehensive data available for the Australian region. Broader preliminary genetic data suggest the potential for recognition of additional cryptic species, with the current study providing a platform for future systematic work. Pseudogobius are a prominent part of estuarine biodiversity in the Indo-west Pacific, and this study helps to highlight the need to better understand the taxonomy and conservation requirements of cryptobenthic fishes. 

Sign in / Sign up

Export Citation Format

Share Document