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1.
Representatives of the fish genus Carasobarbus Karaman, 1971 (Actinopterygii: Cyprinidae) from the Middle East and North Africa were previously placed in 14 different genus-group taxa (Barbellion, Barbus, Barynotus, Capoeta, Carasobarbus, Cyclocheilichthys, Kosswigobarbus, Labeobarbus, Luciobarbus, Pseudotor, Puntius, Systomus, Tor and Varicorhinus). The generic assignment of several species changed frequently, necessitating a re-evaluation of their taxonomic status. In this study, the genus Carasobarbus is revised based on comparative morphological examinations of about 1300 preserved specimens from collections of several museums and freshly collected material. The species Carasobarbus apoensis, Carasobarbus canis, Carasobarbus chantrei, Carasobarbus exulatus, Carasobarbus fritschii, Carasobarbus harterti, Carasobarbus kosswigi, Carasobarbus luteus and Carasobarbus sublimus form a monophyletic group that shares the following combination of characters: medium-sized barbels with a smooth last unbranched dorsal-fin ray, nine or 10 branched dorsal-fin rays and six branched anal fin-rays; scales large, shield-shaped, with many parallel radii; the lateral line containing 25 to 39 scales; the pharyngeal teeth hooked, 2.3.5-5.3.2 or 2.3.4-4.3.2; one or two pairs of barbels. The species are described in detail, their taxonomic status is re-evaluated and an identification key is provided. A lectotype of Systomus luteus Heckel, 1843 is designated. Carasobarbus Karaman, 1971, Kosswigobarbus Karaman, 1971, and Pseudotor Karaman, 1971 are subjective synonyms, and acting as First Reviser we gave precedence to the name Carasobarbus.  相似文献   

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Phaeonychium consists of six species distributed in Afghanistan, Bhutan, China, India, Kashmir, Nepal, and Tajikistan. The new combinations P. villosum and P. kashgaricum are proposed. Phaeonychium jafrii is described as new. The limits and relationships of Phaeonychium are discussed.  相似文献   

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Summary  A taxonomic revision of the palm genus Sclerosperma (Arecaceae) is presented. Three species are recognised: S. mannii H. Wendl., which is relatively widespread from Liberia to the Democratic Republic of Congo; S. walkeri A. Chev., which is apparently confined to the interior of Gabon and a band along the Congo River; and S. profiziana, a new species previously considered conspecific to S. mannii that is found in southwest Ghana, Congo, the Democratic Republic of Congo and Angola. The taxonomic history, morphology, distribution and conservation status of the genus and each species are discussed.  相似文献   

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Four species are recognised in Mouretia, a genus previously thought to be monospecific. Two new species M. vietnamensis and M. larsenii are described, and M. tonkinensis var: inequalis is elevated to the rank of species. All species are illustrated. The chromosome number far M. larsenii is given. The character states for the genus are presented. A comparison between Mouretia and Mycetia show them to share most of their character states. It is suggested that the two genera form a monophyletic group, that should be included in the tribe Hedyotideae.  相似文献   

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The genus Annesorhiza is revised and twelve species are recognized, of which two are newly described: A. altiscapa, A. burttii, A. flbrosa, A. flagellifolia, A. grandiflora, A. lateriflora, A. latifolia, A. macrocarpa, A. nuda, A. schlechteri, A. thunbergii and A. wilmsii. A. marlothii is reduced to synonymy under A. lateriflora , a species hitherto poorly known as Peucedanum lateriflorum. A. thunbergii is only known from the type specimen. A. elata, A. hirsuta and A. villosa are sunk under A. grandiflora. A. fúicaulis has recently been excluded from Annesorhiza on the basis of fruit structure. A key to the species is provided, an update on the nomenclature, typification of names and distribution maps are provided for all the species.  相似文献   

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The genus Dopatrium is revised and 14 species are recognized. The distribution and ecology of each species is described and illustrations and distribution maps are provided. The new combination Dopatrium tenerum is proposed.  相似文献   

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Abstract Holcothorax Mayr is revised and three Palaearctic species, testaceipes (Ratzeburg), nepticulae Mayr and vellutatus sp.n., are recognized. A key to species is provided and details of host relationships are presented.  相似文献   

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Abstract. The rhyparochromine lygaeid genus Pseudopachybrachius is revised. Four species are recognized in the perplexing vinctus-gvoup (viz capicola, reductus, vinctus and guttus) based on the genitalia details and external features. One new species, P.concepcioni sp.nov., is described from the West Indies and South America. New distributional records are given for all species. Pamera dubia Reuter 1882 is synonymized with Pseudopachybrachius reductus (Walker, 1872) and a neotype is designated for Rhyparochromus inconspicuus Dallas, 1852. A key and diagnostic characters of seven species are given. Phylogenetic and zoogeographic relationships are discussed. Illustrations of the genitalia, a cladogram and diagnostic external features are included.  相似文献   

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In connection with a revision of Gerbera L. nom. cons. in Africa the genus Perdicium L. is revised. The genus includes two species, P. capense L. and P. leiocarpum DC. in the Western Cape Region of South Africa.  相似文献   

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Barbara Ertter 《Brittonia》1980,32(1):70-102
The genusOxytheca of western North America and temperate South America consists of seven species which are keyed, described, discussed, illustrated, and mapped. They are divided among sect.Oxytheca, sect.Acanthoscyphus stat. & comb. nov., and sect.Neoxytheca sect. nov.Oxytheca dendroidea subsp.chilensis is given as a new combination, whileO. parishii var.cienegensis andO. parishii var.goodmaniana are described as new. The history and relationships of the genus are discussed. It is retained as distinct fromEriogonum and is thought to have arisen from the larger genus nearE. spergulinum, E. parishii, andE. apiculatum in subgenusGanysma. Cytological data indicatedn= 20.  相似文献   

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A key is given to the four species of Naroma now recognised. The species are redescribed and their distribution is listed. The early stages of N.varipes and N.signifera are described by D.G.Sevastopulo.  相似文献   

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