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1.
FREDRIK TERFELT 《Palaeontology》2006,49(6):1339-1355
Abstract:  The Scandinavian trilobites described in the classical papers by Moberg and Möller (1898) and Moberg (1898) are reviewed, based on the original type collections. The ten species and subspecies originally described are here considered to represent 12 species and subspecies, ranging in age from the latest Furongian (late Cambrian) through the Tremadocian (Early Ordovician). Lectotypes are selected for Parabolina ( Parabolina ) acanthura (Angelin), Acerocare ecorne Angelin and Westergaardia lata (Matthew). Leptoplastus claudicans (Moberg and Möller) is regarded as a junior subjective synonym of L . stenotus Angelin. These, and lectotypes formerly only figured by hand-drawings, are illustrated by high-resolution photographs.  相似文献   

2.
紫苏属植物染色体数目和核型分析   总被引:2,自引:0,他引:2  
通过对26份紫苏属材料进行染色体数目的观察,并对其1种(包括紫苏和白苏)及2变种材料各一份进行核型分析.结果显示,紫苏属植物染色体数均为2n=40,其核型公式分别为紫苏[P.frutescens(L.)Britton var.frutescens(zi-su)]2n=40=20m(2SAT) 10sm 10st;野生紫苏[P.frutescens var.purpurascens(Hayata)H.W.Li]2n=40=18m 14sm(2SAT) 8st;回回苏[P.frutescens var.crispa(Benth.)Deane ex Bailey]2n=40=10m(2SAT) 14sm 16st;白苏[P.frutescens(L.)Britton var.frutescens(bai-su)]2n=40-24m 12sm(2SAT) 4st.结果表明,紫苏属不同原(变)种植物的染色体数日相同,但在核型上存在一定的差异,其染色体核型为首次报道.  相似文献   

3.
Peristylus is a genus of over 60 species, mainly distributed in the Old World tropics, with many species extending northwards to central China. In the present paper, the taxa of the genus hitherto recorded in China are taxonomically and phytogeographically discussed and revised, and, as a result, 20 species are recognized, including one new species, P. jinchuanicus K. Y. Lang, and four new combinations, P. bulleyi (Rolfe) K. Y. Lang, P. forrestii (Schltr.) K. Y. Lang, P. longiracemus (Fukuyama) K. Y. Lang and P. neotineoides (Ames et Schltr.) K. Y. Lang. A full list of synonyms is given, a key to the species is provided and the distribution areas in China of all the taxa are mapped.  相似文献   

4.
Pennella sagitta (L.) is redescribed from fresh specimens recovered from Histrio histrio (L.) and from material in the collection of the Smithsonian Institution. A small, delicate parasitic copepod, P. sagitta is shown to be a valid species, found only on fishes of the family Antennariidae. Attempts of earlier workers to synonymize P. diodontis with P. sagitta are rejected, and the distinguishing features of both species are presented. A neotype is proposed from material described herein, due to a lack of the original holotype. A provisional review of the genus Pennella Oken, 1816 is provided, and the taxonomic status of 31 species is discussed. Pennella exocoetus is described from material in museum collections. Seven species, P. balaenoptera, P. diodontis, P. exocoetus, P.filosa, P. instructa, P. makaira and P. sagitta are considered as valid members of the genus. The remaining species are reduced to synonymy with valid species or accorded the status of species inquirendae.  相似文献   

5.
Abstract. The fruit fly genus Ceratitis (Diptera: Tephritidae) comprises several important pest species attacking a wide range of unrelated fruits. In this paper the subgenus Ceratitis ( Pardalaspis ) Bezzi is revised. Ten species are recognized of which five are described as new: C.(P.)hamata sp.n., C.(P.)munroi sp.n., C.(P.)serrata sp.n., C.(P.)semipunctata sp.n. and C.(P.)zairensis sp.n. A key to both sexes is provided. All species are restricted to the Afrotropical Region and distributional and known host plant data are given.  相似文献   

6.
中国多刺蚁属驼背亚属系统分类研究(膜翅目:蚁科)   总被引:1,自引:0,他引:1  
徐正会 《昆虫学报》2002,45(4):522-530
记述了在云南省南部西双版纳自然保护区热带雨林区域采集到的多刺蚁属Polyrhachis Smith驼背亚属Cyrtomyrma Forel 5新种:方肩多刺蚁P. (C.) cornihumera sp. Nov.,齿肩多刺蚁P. (C.) dentihumera sp. Nov.,圆肩多刺蚁P. (C.) orbihumera sp. Nov.,圆顶多刺蚁P. (C.) rotoccipita sp. Nov.,短胸多刺蚁P. (C.) brevicorpa sp. Nov.。目前为止在中国和中南半岛记载该亚属13种,其中中国已知9种。提供了中国和中南半岛已知13种的检索表。  相似文献   

7.
Ixeris Cass., strinctly speaking, is confined to plants which have achenes with sharply winged ribs. Ixeridium (A. Gray ) Tzvel. contains plants which have persistent radical leaves at anthesis and achenes with obtuse ribs and a fine rostrum at its apex. Paraixeris Nakai is restricted to plants which are of the same achenes as in the genus Ixeridium (A. Gray) Tzvel., but rostra of achenes are robust and radical leaves deciduous in flowering in the former. The Chorisis DC., a monotypic genus, is characterized by ternate palatisect leaves. In the light of the above mentioned understanding of these genera, the author thinks that the division of Chinese Ixeris group, a comparatively complex one, into four genera would be more reasonable than merging them into one genus, namely, Ixeris Cass. Based on the examination of specimens in the Herbarium of the Institute of Botany, Academia Sinica (PE), the author found that there are four species in the genus Ixeris Cass., including one new combination in China. They are I. polycephala Cass., I. dissecta (Makino) Shih, I. japonica (Burm. f. ) Nakai and I. stolonifera A. Gray. The genus Ixeridium (A. Gray ) Tzvel. has 13 species, including five new combinations and three new species in China, namely, I. sagittaroides (C. B. Clarke) Shih, I. gramineum (Ledb.) Tzvel., I. yunnarense Shih,I. graminifolium(Ledb.)Tzvel.,I, biparum Shih,I.aculeolatum Shih,I. chinense( Thunb. ) Tzvel., I. strigosum( Fisch. ) Tzvel., I. elegans( Franeh. ) Shih, I. sonchifolium (Maxim.)Shih,I. laevigatum (BI.)Shih,I. dentatum(Thunb. )Nakai and I. gracile(DC.)Shih, in China. There are six species in the genus Paraixeris Nakai, including One new combination, namely, P. denticulata(Houtt.) Nakai, P. humifusa(Dunn) Shih, P. cheldonifolia( Makino) Nakai, P. saxatilis( Baran. ) Tzvel., P.pinnatipartita (Makino)Tzvel. and P.serotina(Maxim.)Tzvel.in China.  相似文献   

8.
Moberg, R. 1995. The lichen genus Phaeophyscia in China and Russian Far East. -Nord. J. Bot. 15: 319–335. Copenhagen ISSN 0107–055X.
Fifteen species, more than half of the total known species in the lichen genus Phaeophyscia , are shown to be present in China and Russian Far East. Morphology, anatomy, chemistry, distribution, habitat, relations to other taxa and some evolutionary trends are discussed. A key to the species is presented and regional distribution maps of all species are given. Several species are new to the area. New combinations are: Phaeophyscia endococcina var. endococcinodes and Phaeophyscia hispidula var. exornatula . The following names are reduced to synonymy: Phaeophyscia endococcinodes, Physcia endococcinodes var. megalospora, Physcia endococcinodes var. stellata, Phaeophyscia imbricata, Phaeophyscia exornatula, Phaeophyscia limbata , and Physcia endococcina var. latiloba .  相似文献   

9.
Two new species of phlebotomine sand fly from Colombian Andes are described, belonging to the subgenus Pifanomyia of the genus Pintomyia. P. (P.) limafalcaoae sp. nov. for which both sexes are described, is assigned to the series pia while P. (P.) antioquiensis sp. nov., known only from the male, is included in the series verrucarum. The subgenus Pifanomyia is characterized and identification keys presented for the two new species.  相似文献   

10.
Having mixed extremely various patterns of achenes for a long time in the genus Lactuca L., especially showed in the classification of it on the mainland of Asia, Lactuca L., the primary unnatural genus, becomes more nuclear in its limit. The present paper makes a revision to attempt providing a clear cline between Lactuca L. and its relative genera. On my opinion, only plants, represented by Lactuca sativa L., which have ovoid capitulum during its fruiting, numerous (7-25), yellow ligular florets and longitudinal 1-10 ribs or striae on each side of achenes, acute into filiform beak at its apex, should be defined as Lactuca L. In view of the present concept of Lactuca L., another group of plants, embodied by Lactuca indica L., having its broadening, thin winged-margin of, 1-3 striae on each side of achenes, black, dorsi-ventral compressed, acute into thick and short beak at its apex, evidently, should not be placed into Lactuca L., but be regarded as genus, i.e. Pterocypsela Shih, gen. nov. Pterocypsela Shih distributes in Eastern and southern Asia, where Lactuca L. does not occur. In China there is all of species, seven species, of Pterocypsela Shih. They are P. raddeana (Maxim.) Shih, P. indica (L.) Shih, P. elata (Hemsl.) Shih P. lacciniata (Houtt.) Shih, P. triangulata (Maxim.) Shih, P. sonchus (Lévl.) Shih and P. formosana (Maxim.) Shih, But in Mediterranean regions and Middle and Western Asia mainly distributes Lactu ca L., in which there are only seven species from western China, Xijiang autonomic district. They are L. dolichophylla Kitam., L. sativa L., L. altaica Fisch. et Mey., L. serriola Torner, L. dissecta Don, L. auriculata DC. and L. undulata Ledb. With the combination of violet-purple ligular florets non-ovoid capitulum during its fruiting, a little thick achenes, acuminate into longer. or short beak at its apex and 4-6 ribs on each side of it, Mulgedium tataricum (L.) DC. is evidently different from Lactuca sativa L. with combination of ovoid capitulum during its fruiting, yellow ligular florets and compres sed achenes, acute into filiform beak at its apex. There seems to be no point in refusing Mu lgedium Cass. as a genus. Strictly speak, Mulgedium Cass. seems to be reminiscent of Para prenanthes Chang (see bellow) without beak at the apex of its achenes. In Hengduan moun tains and mountain range of Himalayas M. tataricum (L.) DC. discoveries its relative par tners. They are M. bracteatum (Mook. f. ex. C. B. Clarke) Shih, M. lessertianum (Wall. ex C. B. Clarke) DC., M. monocephalum (Chang) Shih, M. umbrosum (Dunn) Shih, M. meridionale Shih and M. polypodifolium (Franch.) Shih. Having broadering and thickening margin and 4-7 striae on each side of achenes, grey, dorsi-ventral compressed, truncate and beakless at its apex, Lactuca sibirica (L.) Benth. ex Maxim. (Sonchus sibiricus L.) is not only different from Lactuca sativa L. with the combination of yellow ligular florets and filiform beak at apex of its achenes, but also from the genus Mulgedium Cass. with beak at apex of its achenes. Therefore, Lagedium Sojak, established by J. Sojak (1961), should be restored. It should be point out that Lagedium Sojak is monotypic genus excluding Mulgedium tataricum (L.) DC. with beak at the apex of its achenes, non-marginated. Lagedium Sojak widely distributes in temperate and frigid zone ofvnorthern hemisphere. In our country, Lagedium sibiricum (L.) Sojak, sole species of the genus, restricts its northeast region. Paraprenanthes Chang, the new genus, established by Ch. Ch. Chang (1950) based on Lactuca sororia Miq. and Lactuca yunnanensis Franch. seems to be a distinct genus. This genus is characterized by 4-6 ribs on each side of achenes, black, fusiform, a little thick and beakless at its apex. Besides above-mentioned two species, assigned by Chang, in forest of tropic and subtropic zones on the mainland of Asia there are many species with same structure in achenes like L. sororia Miq. and L. yunnanensis Franch. The genus Paraprenanthes Chang seems to be reminiscants of Mulgedium Cass. and Lagedium Sojak, but differs from the former in its beakless achenes, from the later in its non-marginated achenes and 4-6 ribs on each side of it. In our country, there are all species of the genus known in the tropic and subtropic zones on the mainland of Asia. They are P. sororia (Miq.) Shih, P. yunnanensis (Franch.) Shih, P. longiloba Ling et Shih, sp. nov., P. heptontha Shih et D. J. Liou, sp. nov., P. prenanthoides (Hemsl.) Shih, P. pilipes (Migo) Shih, P. thirionii (Lévl.) Shih, P. sylvicola Shih., sp. nov., P. multiformis Shih, sp. nov., P. auriculiformis Shih, sp. nov. and P. sagittiformis Shih, sp. nov.  相似文献   

11.
记述中国四川巨须隐翅虫属Oxyporus Fablicius,伪巨须隐翅虫亚属subgenus Pseudoxyporus 4新种,其中,半黑伪巨须隐翅虫Oxyporus(Pseudoxyporus)heminigritus sp.nov.采自巴塘县竹笆笼自然保护区;九龙伪巨须隐翅虫O.(P.)jiulongus sp.nov.采自九龙县瓦灰山和木里县;端节伪巨须隐翅虫O.(P.)parajiulongus sp.nov.采自青川县唐家河自然保护区;肖氏伪巨须隐翅虫O.(P.)xiaoae sp.nov.采自冕宁县冶勒自然保护区。新种附有彩色整体外形图,其中的2个种配有特征图。编制了中国种的检索表。  相似文献   

12.
对肉座菌属的系统分类史进行了回顾,并对3个菌生种进行了报道;其中硫磺肉座菌(新拟)Hypocrea sulphurea(Schwein.)Sacc.为中国新记录种,拟层孔肉座菌H.fomitopsisP.G.Liuet  相似文献   

13.
Pterigodermatites (P.) spinicaudatis sp. n. from Dromiciops australis is proposed and described. The simple morphology of the ovijector and the presence of a well developed spine between the two cuticular projections at the caudal extremity of the female distinguish the studied nematode from the remainder species of the genus parasitizing South American Edentata, marsupials and cricetid rodents. The distribution area of the hosts of the different species of P. (P.) are given. The studied genus does not parasitize any Australian marsupials. It was found in the endemic South American Microbiotheriidae. This fact suggests from a parasitological point of view that D. australis is not related to the Australian marsupials but to the South American ones.  相似文献   

14.
In the classification of J. D. Hooker (1873) and of K. Schumann (1891), the genus Prismatomeris Thw. is included in the tribe Morindeae of Rubiaceae. In the modern classifications, e. g. Bremekamp (1966), however, the taxonomic position of the genus is still uncertain. The genus agrees with the tribe Morindeae in the downward radicle, valvate aestivation of the corolla lobes and presence of raphides, but it differs significantly from the latter in the free flowers, bilocular ovary and the peltate ovule attached to the upper half of septum. Therefore, it would be more suitable that the genus is separated from the tribe Morindeae Miq., and is raised to the rank of tribe, placed in the subfamily Rubioideae based on Bremekamp’s delimitation. In the present paper ten character pairs of the genus and the notes on their taxonomic value are presented and two following species are recognized: 1. P. tetrandra (Roxb.) K. Schum. is found in northern India. Its subspecies, which is distributed in Yunnan of China and in Thailand, was previously called P. tetrandra (Roxb.) K. Schumann, and is now revised as P. tetrandra (Roxb.) K. Schum. subsp. multiflora (Ridley) Y. Z. Ruan. 2. P. connata Y.Z. Ruan is described as a new species, that has been treated as P. tetrandra (Roxb.) K. Schum. by previous auth rs. It is native to the subtropic region of South China. Its tropical new subspecies, P. connata. Y. Z. Ruan subsp. hainanensis Y. Z. Ruan, is found on Hainan Island.  相似文献   

15.
The nomenclatural and taxonomic history of the genusPerama Aubl. (Rubiaceae) is discussed. The major trends of evolution within the genus are characterized, and the sections of the genus are delimited. A new section,Diperama Kirkb. & Steyerm., is described. The distribution of the genus is updated, and centers of species concentration are indicated. A complete synonymy is given for the genus, and the type species cited. An artificial key to the species is given ; a new combination,P. parviflora (Standl.) Kirkb. & Steyerm., is mads; and three new species are described,P. harleyi Kirkb. & Steyerm.,P. irwiniana Kirkb. & Steyerm., andP. sparsiflora Standl. ex Steyerm. & Kirkb.  相似文献   

16.
本文报道了吉林省针层孔属(Phellinus)的21种,其中新种2个:丁香针层孔(P.syringeus Zeng sp.nov.);硬盖针层孔(P.scleropilcatus Zeng sp.nov.);国内新纪录种3个(并一种为新组合):黄肉针层孔[P.rhabarbarinus(Berk.)Cunningh.];厚黑针层孔[P.euerhartii(Ell.&Gall)Ames];粗糙针层孔[P.rudis(Berk.)Zeng comb.nov.]。  相似文献   

17.
The genus Bacteroides contains a number of biochemically and physiologically heterogeneous groups of organisms and needs taxonomic revision. In this study cellular fatty acids from a number of Bacteroides spp. were identified and quantified using gas chromatography and gas chromatography-mass spectrometry. The chemical data were then subjected to principal components analysis. In B. fragilis, which is the type species of the genus Bacteroides, C3-OH-iso17 was the predominant fatty acid (38.0%) and Cante15 was present in higher amounts (32.7%) than Ciso15 (14.6%). B. fragilis thus differed from all the other species examined: Prevotella (Bacteroides) buccae, P. (B.) oralis, P. (B.) oris, P. (B.) disiens, P. (B.) veroralis, P. (B.) heparinolytica and Porphyromonas (Bacteroides) endodontalis. Principal components analysis also enabled the closely related P. buccae, P. oralis and P. oris to be differentiated.  相似文献   

18.
关于新疆的粘菌,过去仅知8种,且无一为绒泡菌。本文第一作者于1994年在新疆进行了粘菌资源调查,在随后的研究中共明确了50多个种,有10种为绒泡菌,其中的几个种,如垂头绒泡菌Physarumnutans(Bull.)Pers.是常见和广布的,但也有几种是特殊的和稀有的。本文报告了5种绒泡菌:橙红绒泡菌P.aurantiacum S.L.Chen,Y.LietH.Z.Li和侧扁绒泡菌P.loratumS.L.ChenY.Li etH.Z.Li是新种,黄白绒泡菌P.albescensEllisexT.Macbr.和团聚绒泡菌P.conglomeratum(Fr.)Rostaf.是中国新记录种,已知种黄绿绒泡菌P.virescensDitmar显然少见,国内此前仅知分布于福建。橙红绒泡菌P.aurantiacumS.L.Chen,Y.LietH.Z.Li的孢丝近似钙丝菌状,由或大或小的石灰结将许多细短的孢丝线联成致密的白色网体,这使其被归入绒泡菌属,并与同属其它种相区分;侧扁绒泡菌P.loratumS.L.Chen,Y.LietH.Z.Li的联囊体虽发达而侧扁,但顶部无预成开裂线,在相似种中也易识别。本文对这两个新种  相似文献   

19.
The genus Psednotrichia (Asteraceae–Senecioneae) is endemic to Angola and currently consists of two annual species, P. xyridopsis (O. Hoffm.) Anderb. & P. O. Karis, and P. newtonii (O. Hoffm.) Anderb. & P. O. Karis. A perennial member of the genus was collected on a recent field trip to Angola, and is here described as P. perennis N. G. Bergh & B. Nord., sp. nov. A key to the three species is provided.  相似文献   

20.
关于新疆的粘菌,过去仅知8种,且无一为绒泡菌。本文第一作者于1994年在新疆进行了粘菌资源调查,在随后的研究中共明确了50多个种,有10种为绒泡菌,其中的几个种,如垂头绒泡菌Physarumnutans(Bull.)Pers.是常见和广布的,但也有几种是特殊的和稀有的。本文报告了5种绒泡菌:橙红绒泡菌P.aurantiacum S.L.Chen,Y.LietH.Z.Li和侧扁绒泡菌P.loratumS.L.ChenY.Li etH.Z.Li是新种,黄白绒泡菌P.albescensEllisexT.Macbr.和团聚绒泡菌P.conglomeratum(Fr.)Rostaf.是中国新记录种,已知种黄绿绒泡菌P.virescensDitmar显然少见,国内此前仅知分布于福建。橙红绒泡菌P.aurantiacumS.L.Chen,Y.LietH.Z.Li的孢丝近似钙丝菌状,由或大或小的石灰结将许多细短的孢丝线联成致密的白色网体,这使其被归入绒泡菌属,并与同属其它种相区分;侧扁绒泡菌P.loratumS.L.Chen,Y.LietH.Z.Li的联囊体虽发达而侧扁,但顶部无预成开裂线,在相似种中也易识别。本文对这两个新种  相似文献   

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