中国灰蝶科一新属一新种：鳞翅目：灰蝶科

中国灰蝶科一新属一新种（鳞翅目：灰蝶科）周尧,王敏（西北农业大学昆虫研究所陕西省杨陵区７１２１００）本文记述我国灰蝶科１新属１新种,即秦灰蝶属ＱｉｎｏｒａＰａｌａｇｅｎ．ｎ．及其模式种秦灰蝶Ｑｉｎｏｒａｐａｌａａｉｎｌｉｎｍｎａｓｎｎ。新属与燕灰蝶属...     

江西玉山王家坝早志留世早期(Early Llandoverian)新腕足动物群的发现及其意义

系统描述江西省玉山县王家坝地区早志留世早期（ＥａｒｌｙＬｌａｎｄｏｖｅｒｉａｎ）地层中新发现的腕足动物群６目、９超科、１７科（其中１新科）、２１属（其中１新属）、２８种（其中７新种、１相似种、６未定种）,并将它们统称为ＩｓｏｒｔｈｉｓＬｅｐｔａｅｎａ动物群。同时指出发现该腕足动物群的意义及其生存的地质时代。     

马蝉属一新种和二中国新记录种：同翅目：蝉科

马蝉属一新种和二中国新记录种（同翅目：蝉科）雷仲仁,李莉（西北农业大学昆虫研究所,陕西省杨陵区７１２１００）关键词同翅目,蝉科,马蝉属,分类学本文记述马蝉属１新种和２中国新记录种。模式标本保存在中国科学院上海昆虫研究所。１．平片马蝉Ｐｌａｔｙｌｏｍｉ...     

新疆蝗虫一新属一新种（直翅目：网翅蝗科）

本文记述采自中国新疆的网翅蝗科１新属：拟草地蝗属及１新种：新疆拟草地蝗。模式标本保存于陕西师范大学动物研究所。     

金小蜂科一新属(膜翅目:小蜂总科)

本文记述了我国金小蜂科、寡金小蜂亚科的１新属和１新种。模式标本存于中国科学院动物研究所动物标本馆。     

新疆网翅蝗科一新属一新种（直翅目：蝗总科）

本文记述了采自中国新疆的网翅蝗科１新属：短翅蝗属及１新种：尼勒克短翅蝗。模式标本存于陕西师范大学动物研究所蝗虫标本室。     

琅琊山蝶类资源调查初报

在安徽省滁州市琅琊山国家级森林公园采集到凤蝶科蝴蝶５属１０种、蛱蝶科１２属１７种、粉蝶科３属５种、眼蝶科３属４种、灰蝶科１０属１２种、喙蝶科１属１种、弄蝶科３属４种。其中,１种为我国特有珍稀蝶类,３１种为安徽省新记录,并记录各种蝴蝶的学名,寄主和区系组成。     

云南蕨类植物小志

根据ＰＹＵ（云南大学蕨类植物标本室）保存的标本,报道云南蕨类植物若干新资料,内容为：３新种,２新变种,中国分布新记录２种,云南分布新记录１属３种,１个种的新组合名称,另１个种的属、科位置的订正及其新组合名称。     

中国大叶蝉科一新记录属及一新种一新组合（同翅目：叶蝉总科）

记述大叶科１中国新记录属－长冠叶蝉属Ｓｔｅｎａｔｋｉｎａ Ｙｏｕｎｇ及１新种－双斑长冠叶蝉Ｓｔｅｎａｔｋｉｎａ ｂｉｍａｃｕｌａｔａ,ｓｐ,ｎｏｖ．和１新种组合－角突长冠叶蝉Ｓｔｅｎａｔｋｉｎａ ａｎｇｕｓｔａｔａ,ｃｏｍｂ,ｎｏｖ．模式标本保存在贵州大学昆虫研究所。     

吉林浑江地区早奥陶世亮甲山组的大型短粗壳内角石类

对产自吉林浑江大阳贫早奥陶世亮甲山组的大型粗壳内角石类进行系统进行,共描述２科３属３７种和１个科属未定标本,其中１新属、３新种和２未定种。首次报道Ｐｉｌｏｃｅｒａｔｉｄａｅ科分子（Ｐａｒａｃａｓｓｉｎｏｃｅｒａｓ ｄａｙａｎｇｃｈａｅｎｓｅ ｇｅｎ．ｅｔ ｓｐ．ｎｏｖ．）在东亚的首次发现。提出角石类内体管构造的４个类型。详细讨论Ｍａｎｃｈｕｒｏｃｅｒａｓ和Ｍａｎｃｈｕｒｃｅｒａｉｄａｅ科的地理分布     

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