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本文记述小毛瓢虫属ScymnusKugelann小瓢虫亚属Scymnus(Pullus)Mulsant三新种:枝角小瓢虫Ssymnus(Pullus)cladocerussp.nov.,鞭丝小瓢虫Scymnus(Pullus)mastigoidessp.nov.,肾斑小瓢虫Scymnus(Pullus)nephrospiulssp.nov.。 相似文献
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广东小毛瓢虫三新种记述:鞘翅目:瓢虫科 总被引:1,自引:0,他引:1
广东车八岭国家级自然保护区位于粤北,是南亚热带向中亚热带过渡地带,瓢虫资源相当丰富,目前已知82种。本文描述的是其中的3个新种,模式标本保存于华南农业大学昆虫标本室。 相似文献
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长崎齿瓢虫属Afissula Kapur自1955年建属以来,经各国学者不断发现及重新组合,迄今已报导13种。云南省以往没有这个属的记载,曹诚一等(1984)在整理云南省森林病虫普查标本时,发现沧源县有环管崎齿瓢虫Afissula kambaitana(Bielawski)的新分布,在瑞丽县发现了匙管畸齿瓢虫A.spatulata Cao et Xiao。1988年作者之一王红在云南永德县采到长崎齿瓢虫属昆虫6头,经鉴定为1新种,现记述如下。模式标本保存于西南林学院森保研究室。 相似文献
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本文描述了小毛瓢虫属3新种:采自云南的冠端小瓢虫Scymnus cristiformis sp.n.,以及采自的匙叶小瓢虫S.(P.)scalpratus sp.n.和凹叶小瓢虫S.(P.)scrobiculatus sp.n.。模式标本存华南农业大学昆虫标本室,广州。 相似文献
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小崎齿瓢虫属一新种:(鞘翅目:瓢虫科) 总被引:1,自引:1,他引:0
小崎齿瓢虫属Afidentula Kapur因上颚不具侧齿和锯齿状小齿而被Kapur(1955)认为有别于Afidenta Dieke。至目前为止,该属共有13种,其中印度马来区系有7种,其余6种见于新几内亚。最近,作者在云南永德县采到该属一新种,现记述如下,模式标本保存于西南林学院森保研究室。 相似文献
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广西食植瓢虫属五新种:鞘翅目:瓢虫科 总被引:2,自引:0,他引:2
本文记述采自广西的食植瓢虫属Epilachna5新种,即花端食植瓢虫Epilachna anthodea,sp.nov。,短叶食植瓢虫E.brachylodb,sp.nov。浪平食植瓢虫E.langpingensis,sp.nov.,靴管食植瓢虫E.ocreata,sp.nov.和管刺食植瓢虫E;siponechinulata,sp.nov.。 相似文献
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七星瓢虫(鞘翅目:瓢虫科)触角的扫描电镜观察 总被引:4,自引:0,他引:4
用扫描电子显微镜对两性七星瓢虫的触角进行了观察 ,结果显示 ,鳞状触角分七节 ,分别为雄性 95 0 0 0±81 16 μm而雌性为 972 0 0± 9 5 7μm长。电镜下可观察到七星瓢虫触角有 8种类型的感觉器 (sensillae) ,即 :chaetica(Ch) ,trichoidea(Tr) ,basiconica(Ba) ,campaniformia(Ca) ,ampucellaceous(Am) ,scolopalia(Sc) ,placodea(Pl)和钩状感觉器。Ch在雄性长为 6 2 5 0± 2 89而在雌性为 72 5 0± 5 0 0 μm。Tr在雄性长为 10 75± 1 5 0 μm而在雌性为 14 98± 2 2 5 μm长。Ba在雄雌两性中分别为 5 7± 0 0 2 μm和 0 75± 0 0 6 μm长。Ca为半球状 ,其直径在两性中均在 3 0 μm。Am的直径在雄雌中分别为 1 2和 1 5 μm。Ca为椭圆内陷盘状。Sc在其顶部较阔而在末端尖锐 ,2 5 μm。在雄性触角上观察到一钩状感觉器 ,长 2 1 0 μm ,它表明七星瓢虫在触角上的性别两型性。在雄雌中其感觉器Ch ,Ca ,Am ,Pl的数量上接近。Tr在雄性触角上数量较大而Ba则在雌性触角上数量较多。 相似文献
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本文记述采自贵州省江口县梵净山自然保护区及镇宁县黄果树瀑布的小毛瓢虫属ScymnusKugelann小瓢虫亚属Scymnus(PulluS)Mulsant3新种。模式标本保存于华南农业大学昆虫标本室。 相似文献
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中国小毛瓢虫二新种记述(鞘翅目:瓢虫科) 总被引:1,自引:0,他引:1
中国小毛瓢虫二新种记述(鞘翅目:瓢虫科)任顺祥,庞雄飞(华南农业大学昆虫生态室广州510642)本文描述采自贵州和四川的小毛瓢虫属ScymnusKugelann小毛瓢虫亚属Scymnus(Scymnus)Kugelann二新种。模式标本保存于华南农业... 相似文献
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Profiles of SARS-CoV-2 RNA and Antibodies in Inpatients with COVID-19 not Related with Clinical Manifestation: A Single Centre Study 下载免费PDF全文
Zhao Li Gao Ruqin Lu Roujian Wang Huijuan Deng Yao Niu Peihua Jiang Fachun Huang Baoying Liang Jiwei Jia Jing Zhang Feng Wang Wenling Wu Guizhen Tan Wenjie 《中国病毒学》2021,36(5):1088-1092
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RICHARD E. NORRIS 《Botanical journal of the Linnean Society. Linnean Society of London》1991,106(1):1-40
Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera. 相似文献
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JOAN VALUÈS MONTSERRAT TORRELL NÚRIA GARCIA JACAS 《Botanical journal of the Linnean Society. Linnean Society of London》2001,137(4):399-407
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted. 相似文献
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Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme
responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare
the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show
that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by
distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of
demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least
one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of
the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable
potent antiproliferative synthetic drugs. 相似文献
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正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases 相似文献