广西叶里亚科昆虫种类记述（鞘翅目：叶甲科）

记述中国科学院动物研究所19982－000年对广西十万大山大瑶山地区考察所采取获叶甲亚科该所标本馆馆藏中甲亚科标本及文献记载,共20属35种,其中包括1中国新记录Pseudolina Jacoby、1新种Gonioctena(Brachyphytodecta）oculata sp.nov.、2中国新记录种Pseudolina indica Jacoby,Paropsides bouveri Chen。模式标本保存在中国科学院动物研究所。     

宽缘萤叶甲属一新种(鞘翅目:叶甲科)

宽缘萤叶甲Pseudosepharia Laboissi(?)re是萤叶甲亚科中的单模属,目前全世界仅知产于四川的Pseudosepharia dilatipennis(Fairmaire)一种。本属鞘翅强烈膨阔,侧缘近圆形,翅端平截,缘折甚宽;前足基节窝开放;后足胫节端部有一较长的刺,第1跗节颇长,长于其余三节之和。 作者在整理标本过程中发现一个新种,是借南开大学的标本。模式标本保存在中国科学院动物研究所。     

中国麻萤叶甲属新种记述(鞘翅目:叶甲科)

麻萤叶甲属 Pseudadimonia Duvivier 是萤叶甲亚科中的一个小属,国内记录3种,产于云南和四川。主要特征是前足基节窝开放,爪双齿式,鞘翅刻点呈痘状,表面粗皱,缘折较宽,很易辨认。本人在整理标本中,发现6个新种,其中5种采自西藏,1种采自云南。模式标本分别保存在中国科学院动物研究所和上海昆虫研究所。     

萤叶甲属一新种(鞘翅目,叶甲科,萤叶甲亚科)

记述采自我国四川贡嘎山的萤叶甲属1新种:匀刻萤叶甲Galeruca regularis sp. nov..模式标本中正模保存在中国科学院动物研究所标本馆,副模由荷兰Ron Beenen博士个人收藏.     

武夷山萤叶甲一新种(鞘翅目:叶甲科)

本文记述发现于福建武夷山的萤叶甲亚科１新种：棒角日萤叶甲Ｊａｐｏｎｉｔａｔａｃｌａｖａ－ｔａＹａｎｇｅｔＷｕ,ｓｐ．ｎｏｖ．。新种模式标本保存在中国科学院动物研究所。     

叶甲亚科口器比较形态学研究(鞘翅目,叶甲科)

叶甲亚科成虫为植食性昆虫,是典型的咀嚼式口器.对叶甲亚科8属8种叶甲(Agrosteomela chinensis (Weise),Ambrostoma fortunei(Baly),Asiparopsis convexa (Weise),Chrysolina aurichalcea(Mannerheim),Chrysomela populi Linnaeus,Gonioctena tredecimmaculata(Jacoby),Parambrostoma mahesa(Hope),Paropsides soriculata(Swartz))的口器进行了比较形态学研究,并对其演化进行了讨论.     

中国猿叶甲属种类记述(鞘翅目:叶甲科)

记述了叶甲亚科猿叶甲素Phaedon的中国种类,共包括15种,其中包括3新种,分别为：高山猿叶甲P.alpina sp.nov., 八郎山猿叶甲P.balangshanensis sp.nov.,无名山猿叶甲P.wumingshanensis sp.nov.,。模式标本保存于中国科学院动物研究所。     

叶甲亚科一新属及两新种记述（鞘翅目：叶甲科）

记述中国叶甲亚科1新属:玉龙叶甲属Yulongedon gen.nov.,包括2新种:靓玉龙叶甲Y.formosus sp.nov.,宝藏神玉龙叶甲Y.jambhalai sp.nov.。     

中国叶甲金小蜂属分类研究及一新种记述(膜翅目,金小蜂科)

对中国叶甲金小蜂属Schizonotus Ratzeburg,1852进行了分类研究,共记述3种,其中1新种及中国1新纪录种:弯柄叶甲金小蜂Schizonotus incurvulus sp.nov.和宽头叶甲金小蜂Schizonotus latus(Walker).提供了形态描述、分布及形态特征图,及该属分种检索表.研究标本保存于中国科学院动物研究所动物标本馆.     

窝额萤叶甲属小志：鞘翅目：叶甲科：萤叶甲亚科

窝额萤叶甲属Fleutiauxia是以东洋区分布为主的属,中名以其额区凹洼而得。本属种类以为害桑树较多,为害大豆、胡枝子等也有记载或报道。目前全世界已知11种,我国已掌握9种。本文是本属中国种类小志,其中有1新组合种和4个新种,新种模式标本除注明外,均保存在中国科学院动物研究所昆虫标本馆。     

A Unique Protease Cleavage Site Predicted in the Spike Protein of the Novel Pneumonia Coronavirus (2019-nCoV) Potentially Related to Viral Transmissibility

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     

Curcuminoids as inhibitors of thioredoxin reductase: A receptor based pharmacophore study with distance mapping of the active site

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.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

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.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

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.     

Comparative morphology of the carpel in the Liliaceae: Hewardieae, Petrosavieae, and Tricyrteae

The young pistils in the melanthioid tribes, Hewardieae, Petrosavieae and Tricyrteae, are uniformly tricarpellate and syncarpous. They lack raphide idioblasts. All are multiovulate, with bitegmic ovules. The Petrosavieae are marked by the presence of septal glands and incomplete syncarpy. Tepals and stamens adhere to the ovary in the Hewardieae and the Petrosavieae but not in the Tricyrteae. Two vascular bundles occur in the stamens of the Hewartlieae and Tricyrtis latifolia. Ventral bundles in the upper part of the ovary of the Hewardieae are continuous with compound septal bundles and placental bundles in the lower part. Putative ventral bundles occur in the alternate position in the Tricyrteae and putative placental bundles in the opposite. position in the Petrosavieae. The dichtomously branched stigma in each carpel of the Tricyrteae is supplied by a bifurcated dorsal bundle.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细