长尾小蜂属二新种(膜翅目:长尾小蜂科)

记述采自新疆皮山和甘肃文县的长尾小蜂属Torymus Dalman 2新种：宽翅长尾小蜂Torymus latialatus,sp．nov．和甘肃长尾小蜂Torymus gansuensis,sp．nov．。模式标本保存在浙江大学应用昆虫学研究所。     

中国长尾小蜂属(膜翅目,长尾小蜂科)一新纪录种

记述长尾小蜂科Torymidae长尾小蜂属Torymus中国1新纪录种,玫瑰瘿长尾小蜂Torymus bedeguaris(L.).该种是从苦水玫瑰的重要害虫玫瑰犁瘿蜂Diplolepid rosae(L.)的虫瘿中育出.提供了形态描述、寄主、分布及形态特征图.研究标本保存在中国科学院动物研究所动物标本馆及兰州市农业科技研究推广中心标本室.     

中国长尾小蜂属(膜翅目,长尾小蜂科)分类研究

研究了中国长尾小蜂属Torymus Dalman,记述3个中国新纪录种,提供了形态特征图,编制了中国长尾小蜂属分种检索表.研究标本保存在中国科学院动物研究所动物标本馆.     

中国螳小蜂属一新种及二新纪录种(膜翅目,长尾小蜂科)

研究了长尾小蜂科长尾小蜂亚科螳小蜂属Podagrion Spinola,1811,描述1新种短脉螳小蜂Podagrion breviveirus sp.nov．及2新纪录种拟螳小蜂Podagrion isos Grissell ＆ Goodpasture和喀拉拉螳小蜂Podagrion keralensis Narendran。新种短脉螳小蜂Podagrion breviveinus sp.nov．与其它两种的主要区别是：触角棒节不膨大,棒节长度明显短于B．F7长度之和;并胸腹节2条亚中脊之间的夹角为锐角;前翅缘脉为后缘脉的8倍;产卵鞘长度约为体长的1．5倍。模式标本保存于中国科学院动物研究所动物标本馆。     

四突跳小蜂亚科三新记录属及三新种记述(膜翅目:跳小蜂科)

记述采自辽宁、黑龙江和新疆的3个跳小蜂属：卡丽跳小蜂属Charitopus Forster、裂脖跳小蜂属Rhopus Forster和塞克跳小蜂属Sakencyrtus Hayat,均为我国首次记录。共记述4个种,其中卡丽跳小蜂属有1中国新记录种,即暗色卡丽跳小蜂Charitopus obscurus(Erdoes);裂脖跳小蜂属2新种,即短翅裂脖跳小蜂Rhopus brachypterous Xu．sp．nov．和黄色裂脖跳小蜂Rhopus flavus Xu,sp．nov．;塞克跳小蜂属1新种,即长尾塞克跳小蜂Sakencyrtus longicaudus Xu．sp．nov．。     

艾菲跳小蜂族三中国新记录属三新种(膜翅目:跳小蜂科)

报道采自辽宁沈阳、阜新和大连的3种跳小蜂,即黑角赛巴跳小蜂Ceballosia nigricornis Xu,sp．nov．、短翅抑蚧跳小蜂Echthroplexiella brachyptera Xu,sp．nov．和黄角秀柯跳小蜂Pseudococcobius flavicornis Xu,sp．nov．,对新种进行了详细描述。本文也是赛巴跳小蜂属Ceballosia Mercet、抑蚧跳小蜂属Echthroplexiella Mercet和秀柯跳小蜂属Pseudococcobius Timberlake在我国分布的首次记录。     

浙江蚜小蜂属一新种：膜翅目：蚜小蜂科

本文报导分布于浙江的蚜小蜂属一新种:桃粉蚜蚜小蜂Aphelinus hyalopteraphidis sp.nov.并详细描述了其分类特征及与近似种的区别。     

中国寄生于林木食叶害虫的短角平腹小蜂属(膜翅目,旋小蜂科)四新种记述

记述了短角平腹小蜂属Mesocomys Cameron(膜翅目,旋小蜂科)4新种:枯叶蛾短角平腹小蜂M.trabalae sp.nov.,短柄短角平腹小蜂M.breviscapis sp.nov.,落叶松短角平腹小蜂M.superansi sp.nov.,中华短角平腹小蜂M.sinensis sp.nov..它们均寄牛于我国重要的食叶害虫的卵.是重要的灭敌昆虫.同时,编制了我国矩角平腹小蜂属种的枪索表.     

中国花翅跳小蜂族二新种(膜翅目,跳小蜂科)

记述采自辽宁沈阳和大连的跳小蜂2新种,即丽柄虱克跳小蜂Aschitus scapus Xu,sp.nov.和短颊赛诺跳小蜂Xenoencyrtus brevimalarus Xu,sp.nov..虱克跳小蜂属Aschitus Mercet和赛诺跳小蜂属Xenoencyrtus Riek为我国新纪录属.     

桑天牛长尾啮小蜂的初步研究

桑天牛长尾啮小蜂是桑天牛的卵寄生蜂,在江苏省寄生率为6.25～61.85％。本文详细叙述了桑天牛长尾啮小蜂的形态特征,与天牛卵长尾啮小蜂形态上的主要区别,以及它的生活史、生活习性等。     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

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.