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81.
记述寄生在蜡梅Chimonanthus praecox(Linn.)Link.(蜡梅科Calycanthaceae)叶子上的瘿螨2新种:蜡梅离子瘿螨Leipothrix chimonae sp.nov.和蜡梅双羽爪瘿螨Diptacus praecoxsp.nov.。模式标本保存在河北大学博物馆。蜡梅离子瘿螨,新种Leipothrix chimonae sp.nov.(图1~5)正模♀,副模:25♀♀,2♂♂,2009-06-01,陕西省岚皋县蜡烛村,海拔600m,谢满超采。寄主为蜡梅Chimonanthuspraecox(Linn.)Link.(蜡梅科Calycanthaceae)。新种与悬钩子离子瘿螨Leipothrix yipingae Shi,2000相似,但新种背盾板具背中线,雌生殖盖片基部具纵线,端部饰有斜线,羽状爪3支,而悬钩子离子瘿螨L.yipingae背盾板上无背中线,雌生殖盖片饰有短线和粒点,羽状爪4支。蜡梅双羽爪瘿螨,新种Diptacus praecox sp.nov.(图6~12)正模♀,副模:8♀♀,7♂♂,2009-06-01,陕西省岚皋县蜡烛村,海拔600m,谢满超采。寄主为蜡梅Chimonanthuspraecox(Linn.)Link.(蜡梅科Calycanthaceae)。新种与臭樱双羽爪瘿螨Diptacus maddenis Song,Xue etHong,2007相似,但新种足Ⅰ基节间具胸线,基节饰有线条和粒点,雌生殖器盖片上饰有1排纵肋,而臭樱双羽爪瘿螨D.maddenis足Ⅰ基节间无胸线,基节饰有粒点,雌生殖器盖片基部饰有粒点。 相似文献
82.
83.
The Southeast Asian species of the Aenictus javanus and Aenictus philippinensis groups are revised. Six species (four named and two new species) of the Aenictus javanus group occurring in this area are: Aenictus doydeei Jaitrong & Yamane, 2011, Aenictus duengkaei Jaitrong & Yamane, sp. n., Aenictus javanus Emery, 1896, Aenictus longinodus Jaitrong & Yamane, sp. n., Aenictus nishimurai Terayama & Kubota, 1993, and Aenictus piercei Wheeler & Chapman, 1930. Four species (three named and one new species) are recognized in the Aenictus philippinensis group: Aenictus pangantihoni Zettel & Sorger, 2010, Aenictus philippinensis Chapman, 1963, Aenictus punctatus Jaitrong & Yamane, sp. n., and Aenictus rabori Chapman, 1963. Aenictus piercei is removed from the members of the Aenictus piercei group sensu Jaitrong and Yamane (2011) and transferred to the Aenictus javanus group. Lectotypes and paralectotypes are designated for Aenictus piercei and Aenictus rabori. Size variation occurs among individuals from single colonies of the Aenictus javanus group, while the workers in the Aenictus philippinensis group are clearly monomorphic. 相似文献
84.
A new species of Acanthodasys (Gastrotricha, Macrodasyida, Thaumastodermatidae) is described from sublittoral sediments off the Atlantic coast of Florida. Acanthodasys paurocactussp. n. is a relatively small species (to 450 μm long) with a strap-shaped outline, a series of anterior, lateral, and ventrolateral adhesive tubes, paired caudal pedicles with posterior adhesive tubes, and a morphologically diverse cuticle. The cuticle contains both spined and unspined scales. Unspined scales are present in two general shapes: lanceolate and eye shaped, with some transitional shapes. All scales have a thickened rim and depressed central region; some scales of both shapes bear either one or more central bumps, a parallel ridge, or a perpendicular ridge that gives the appearance of a cross-shaped pattern under transmitted light. Spined scales are somewhat quadrangular in shape and bear uniancres to 15 μm long with a cross-shaped sectional profile. The new species is now one of five described species to possess both spined and spineless scales, and only one of two species to possess two types of spineless scales (the second species is an incompletely described specimen from Norway). 相似文献
85.
Three new species of Potamothrix Vejdovsky & Mrázek, 1902 (Oligochaeta: Tubificinae), Potamothrix praeprostatussp. n., Potamothrix paramoldaviensissp. n. and Potamothrix parabedotisp. n., are reported from Fuxian Lake of Yunnan Province, Southwest China. Potamothrix praeprostatusdiffers from its allies by its prostate glands joining atria in its proximal to middle portion, and spermathecal chaetae. Potamothrix paramoldaviensis is distinguishable from its allies by having penial chaeta but no penes, and differs from Potamothrix moldaviensisby its homogenous atrium. Potamothrix parabedoti is distinctive in the position of its reproductive organs, and differs from Potamothrix bedoti by its homogenous atrium. Hitherto, 34 freshwater oligochaete species have been recorded in Yunnan Province, including nine endemic species from the plateau lakes. 相似文献
86.
JOSÉ ANTONIO FERNÁNDEZ PRIETO CARLOS AGUIAR EDUARDO DIAS MARÍA DE LOS ÁNGELES FERNÁNDEZ CASADO JUAN HOMET 《Botanical journal of the Linnean Society. Linnean Society of London》2008,158(3):522-533
The taxonomy and nomenclature of the genus Huperzia Bernh. in the Azores and Madeira have been reviewed. Plants collected in the Azores and Madeira were characterized morphologically. The independence between two endemic species common to Madeira and the Azores Islands –Huperzia suberecta (Lowe) Tardieu and Huperzia dentata (Herter) Holub – is clearly shown. A clear‐cut morphological separation between these taxa and Huperzia selago (L.) Bernh. ex Schrank & Mart. of continental Europe is established. © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society, 2008, 158 , 522–533. 相似文献
87.
Variation Within and Between Phytophthora Species from Rubber and Citrus Trees in China, Determined by Polymerase Chain Reaction Using RAPDs 总被引:3,自引:1,他引:2
Variation among 39 isolates of Phytophthora of six morphological species (P. citrophthora. P. parasitka, P. capsici, P. palmivora and P. meadii. from rubber and citrus trees, and P. colocasiae from taro) was studied using random amplified polymorphic DNA (RAPD) analysis. Ten randomly-chosen 10-mer primers were used. Generally, the banding patterns were similar within species and different between species, but no one primer was able to distinguish all six species from one another. Cluster analysis on pooled data from all the primers gave six groups of isolates corresponding to the six morphological species. The group corresponding to P. citrophthora was divided further into subgroups that were related to host species and geographical location. This work confirmed the existing morphological classification of Phytophthora isolates from rubber and citrus trees in tropical China and showed the validity of using RAPDs to study the taxonomy of Phytophthora. 相似文献
88.
Gene flow between insular, coastal and interior populations of brown bears in Alaska 总被引:7,自引:0,他引:7
The brown bears of coastal Alaska have been recently regarded as comprising from one to three distinct genetic groups. We sampled brown bears from each of the regions for which hypotheses of genetic uniqueness have been made, including the bears of the Kodiak Archipelago and the bears of Admiralty, Baranof and Chichagof (ABC) Islands in southeast Alaska. These samples were analysed with a suite of nuclear microsatellite markers. The 'big brown bears' of coastal Alaska were found to be part of the continuous continental distribution of brown bears, and not genetically isolated from the physically smaller 'grizzly bears' of the interior. By contrast, Kodiak brown bears appear to have experienced little or no genetic exchange with continental populations in recent generations. The bears of the ABC Islands, which have previously been shown to undergo little or no female-mediated gene flow with mainland populations, were found not to be genetically isolated from mainland bears. The data from the four insular populations indicate that female and male dispersal can be reduced or eliminated by water barriers of 2–4 km and 7km in width, respectively. 相似文献
89.
W. Kelley Thomas J. T. Vida Linda M. Frisse Manuel Mundo James G. Baldwin 《Journal of nematology》1997,29(3):250-254
To effectively integrate DNA sequence analysis and classical nematode taxonomy, we must be able to obtain DNA sequences from formalin-fixed specimens. Microdissected sections of nematodes were removed from specimens fixed in formalin, using standard protocols and without destroying morphological features. The fixed sections provided sufficient template for multiple polymerase chain reaction-based DNA sequence analyses. 相似文献
90.
Charles R. C. Sheppard 《Biodiversity and Conservation》1998,7(7):847-868
Corals from 26 sites in the Indian Ocean, from numerous taxonomic sources, are analysed for distribution patterns after applying a consistent synonymy. The data set contains double the amount of distribution information used previously. Cluster analysis shows several contiguous regional groupings within this ocean, and no geographically dispersed groupings exist. Between-site species similarity correlates negatively with distance between sites. Coral species diversity and genus diversity plotted with latitude and longitude confirm that a band of high diversity stretches across the entire Indian Ocean, but that in this Ocean, unlike the Pacific and greater Caribbean area, there is no clear gradient with latitude at least up to the latitudinal limits of coral growth. About half the species are widespread throughout the Indian Ocean. Species frequency/distribution curves and cumulative frequency curves show that 150 species occur at only 2–4 sites. Multi-dimensional scaling (MDS) analysis using only these species confirms that they are important in forming sub-regional groupings which are superimposed on a general Indian Ocean homogeneity.The perennial problem of error in taxonomic data sets is examined. Increasing taxonomic error is introduced into the data using random methods. It is found that about 25% more error can be added to this data set before the relationship between similarity coefficient and geographical distance between pairs of sites is lost. Measures extracted from the clustering procedure using the original data and the data sets with added taxonomic error, show a sharp loss in cluster formation after addition of about 10 or 20% more error. 相似文献