扁角跳小蜂二新种记述

本文座蜡蚧中育出的扁角跳小蜂二新种,即食红市区扁跳小蜂Ａｎｉｃｅｔｕｓ ｒｕｂｅｎｓｉ ｓｐ．ｎｏｖ．和毛扁角跳小蜂Ａｎｉｃｅｔｓ ｒａｒｉｓｅｔｕｒｓ ｓｐ．ｎｏｖ,前者育自红蜡蚧,后者育自日本蜡蚧、工蜡蚧和角蜡蚧。     

竹类害虫的六种寄生蜂及二新种记述（膜翅目：跳小峰科）

本文报导与竹类害虫有关的６种跳小蜂。长缘刷盾跳小蜂Ｃｈｅｉｌｏｎｅｕｒｕｓｃｌａｖｉｇｅｒ及优赛跳小蜂Ｅｕｓｅｍｉｏｎｃｏｒｎｉｇｅｒｕｍ,寄生竹巢粉蚧Ｎｅｓｔｉｃｏｃｃｕｓｓｉｎｅｎｓｉｓ的初寄生者花翅跳小蜂Ｍｉｃｒｏｔｅｒｙｓｓｐｐ．;瓢虫隐尾跳小蜂Ｈｏｍａｌｏｔｙｌｕｓｆｌａｍｉｎｉｕｓ,寄生黑缘光瓢虫Ｅｘｏｃｈｏｍｕｓ（Ｘａｎｔｈｏｃｏｒｎｓ）ｎｉｇｒｏｍａｒｇｉｎａｔｕｓ;白胫短缘跳小蜂Ｚａｏｍｍａｅｒｉｏｃｏｃｉ（Ｔａｃｈｉｋａｗａ）中国新记录,寄生竹巢粉蚧的初寄生者花翅跳小蜂;四斑长索跳小蜂ＡｎａｇｙｒｕｓｑｕａｄｒｉｍａｃｕｌａｔｕｓＸｕｅｔＨｅ,ｓｐ．ｎｏｖ,寄生竹绒粉蚧Ｅｒｉｏｃｏｃｃｕｓｔｒａｎｓｖｅｒｓｕｓ;长脉卵跳小蜂ＯｏｅｎｃｙｒｔｕｓｌｏｎｇｉｖｅｎｏｓｕｓＸｕｅｔＨｅ,ｓｐ．ｎｏｖ,寄生竹卵圆蝽Ｈｉｐｐｏｔｉｓｃｕｓｄｏｒｓａｌｉｓ。标本及模式标本保存在浙江农业大学寄生蜂标本室。     

软鳞跳小蜂属一新种记述（膜翅目：跳小蜂科）

本文记述中国软鳞跳小蜂属１新种：壶蚧软鳞跳小蜂ＬａｋｓｈａｐｈａｇｕｓｃｅｒｏｃｏｃｃｉＸｕｅｔＨｅ,ｓｐ．ｎｏｖ．。模式标本保存在浙江农业大学生物防治研究室     

软鳞跳小蜂属一新种记述（膜翅目：跳中蜂科）

本文记述中国软鳞跳小蜂属１新种：壶蚧软鳞跳小蜂Ｌａｋｓｈａｐｈａｇｕｓ ｃｅｒｏｃｏｃｃｉ Ｘｕ ｅｔ Ｈｅ，ｓｐ．ｎｏｖ．。模式标本保存在浙江农业大学生物防治研究室。     

中国花翅跳小蜂族二新纪录属和二新种(膜翅目:跳小蜂科)

描述了跳小蜂２新种,好寄生蜚蠊Ｂｌａｔｔａｒｉｄ的弯带敌蟑跳小蜂,新种Ｄｉｃａｒｎｏｓｉｓ ｓｉｎｕａｔｉｓ Ｘｕ,ｓｐ．ｎｏｖ．和采自陕西杨陵寄生寄蝇Ｔａｃｈｉｎｌｄ的斜棒蝇克跳小蜂,新种Ｅｘｏｒｉｓｔｏｂｉａ ｈｌｉｎｏｃｌａｖａｌａＸｕ,ｓｐ．ｎｏｖ．。敌蟑跳小蜂属Ｄｉｃａｒｎｏｓｉｓ Ｍｃｒｃｅｔ和蝇克跳小蜂属Ｅｘｏｒｉｓｔｏｂｉａ Ａｓｈｍｅａｄ在我国为新纪录属。     

中国跳小蜂科二新记录属三新种（膜翅目：小蜂总科）

本报道采自辽宁和黑龙江的跳小蜂３新种,即宽额奇异跳小蜂,Ｍｉｒａ ｌａｔｉｆｒｏｎｔａ Ｘｕ,ｓｐ．ｎ．、双带奇异跳小蜂,Ｍｉｒａ ｂｉｆａｓｃｉａｔａ Ｘｕ,ｓｐ．ｎ．和长梗四突跳小蜂Ｔｅｔｒａｃｎｅｍｕｓ ｌｏｎｇｉｐｅｄｉｃｅｌｌｕｓ Ｘｕ,ｓｐ．ｎ．。对新种进行了详细描述。本也是奇异跳小蜂属Ｍｉｒａ Ｓｃｈｅｌｌｅｎｂｅｒｇ和四突跳小蜂属Ｔｅｔｒａｃｎｅｍｕｓ Ｗｅｓｔｗｏｏｄ在我国分     

寄生柑桔矢尖蚧的跳小蜂一新种：膜翅目：跳小蜂科

本文记述盾蚧跳小蜂ＣｏｃｃｉｄｅｎｃｙｒｔｕｓＡｓｈｍｅａｄ１新种,即长尾 盾蚧跳小蜂     

平腹小蜂属四新种记述：（膜翅目：旋小蜂科）

本文记述平腹小蜂属Ａｎａｓｔａｔｕｓ ４新种,即石城平腹小蜂Ａ;Ｓｈｉｃｈｅｎｇｅｎｓｉｓ,ｓｐ．ｎｏｖ;德兴平腹小蜂;Ａ;ｄｅｘｉｎｇｅｎｓｉｓ,ｓｐ．ｎｏｖ;麻纹蝽平腹小蜂Ａ;Ｆｕｌｌｏｉ,ｓｐ．ｎｏｖ。及黄褐平腹小蜂Ａ;ｆｇｌａｖｉｐｅｓ,ｓｐ．ｎｏｖ。模式标本保存于东西农业大学植物保护系昆虫标杯室。     

NOTE ON TWO NEW SPECIES OF DISCODES FOERSTER (HYMENO PTERA:ENCYRTIDAE)

本文报道点刻跳小蜂属２新种,即从甘肃古浪采集的禾蜡蚧点刻跳小蜂ＤｉｓｃｏｄｅｓｅｒｉｏｐｅｌｔｉｓＸｕｅｔＨｅ,ｓｐ．ｎ．和从辽宁沈阳采集的沈阳点刻跳小蜂ＤｉｓｃｏｄｅｓｓｈｅｎｙａｎｇｅｎｓｉｓＸｕｅｔＨｅ,ｓｐ．ｎ．。对新种进行了详细描述,并附特征图和检索表。点刻跳小蜂属在我国的分布为首次记录。模式标本存浙江农业大学植物保护系。     

伏牛山小蜂科二新种：膜翅目：小蜂总科

本文记述河南省伏牛山膜翅目小蜂总科小蜂科２新种：吉丁锥腹小蜂Ｔｒｉｇｏｎｕｒａ ｃｈｒｙｓｏｂａｔｈｒａ ｓｐ．ｎｏｖ．,青冈梳角小蜂Ｃｈｉｒｏｃｅｒａ ｇｌａｕｃａ ｓｐ．ｎｏｖ。２新种所隶属的属均为中国新记录属。新种的模式标本存在中国林业科学研究院森林保护研究所标本室。     

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.     

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     

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.