断脉茧蜂属一新种(膜翅目:茧蜂科)

本报道了采自云南的断脉茧蜂属Heterospilus Haliday一新种：短颊断脉茧蜂Heterospilus breviatus Shi,Yang et Chen,sp nov.,模式标本保存于福建农林大学益虫研究室。     

中国新纪录属叉突茧蜂属及二新种记述(膜翅目,茧蜂科,茧蜂亚科)

记述中国新纪录属叉突茧蜂属Furcadesha Quicke及2新种：南宁叉突茧蜂Furcadesha nanningensis Liu et Chen,sp.nov.和双斑叉突茧蜂Furcadesha bimaculatus Yang et Liu,sp.nov.。文中对叉突茧蜂属及新种进行了详细的描述,新种附有鉴别形态特征图,并与其近似种作了比较。模式标本存放于福建农林大学益虫研究室。     

寄生稻纵卷叶螟的长体茧蜂属一新种记述（膜翅目：茧蜂科：长体茧蜂亚科）

本报道寄生稻纵卷叶螟幼虫的长体茧蜂属一新种：纵卷叶螟长体茧蜂Macrocentrus cnapholocrocls,sp.nov。     

寄生稻纵卷叶螟的长体茧蜂属—新种记述(膜翅目:茧蜂科:长体茧蜂亚科)

本文报道寄生稻纵卷叶螟幼虫的长体茧蜂属一新种:纵卷叶螟长体茧蜂 Macrocentruscnapholocrocis,sp.nov.     

我国常见的四种悬茧蜂

<正> 悬茧蜂属~(**) Meteorus Haliday隶属茧蜂科优茧蜂亚科Euphorinae,是最常见的一类寄生蜂。全世界均有分布,已知近230种(Shenefelt,1969),而我国目前仅记录11种。实际上此蜂在我国分布普遍,种类甚多,有待进一步采集和研究整理。 悬茧蜂主要寄生于鳞翅目幼虫,极少数种寄生于鞘翅目幼虫。对某些鳞翅目幼虫的发生有一定控制作用,如伏虎茧蜂在我国一些地区对于地老虎幼虫时有较高的寄生率,曾引起当地重视。该蜂为内寄生,产卵于寄主体内,蜂幼虫孵化后即在寄主幼虫体内生活,至老熟时钻出奇主结茧。单寄生或多寄主,以单寄生种类为多。 悬茧蜂成虫体长多为3.5—5.5毫米,但亦     

中国十种寄生于林木害虫的脊茧蜂(膜翅目:茧蜂科:内茧蜂亚科)

本文报道了10种寄生于中国林木害虫的脊茧蜂Aleiodes Wesmael,其中有3个新种:角脉脊茧蜂A. angulinervis sp. nov.、油桐尺蠖脊茧蜂A. buzurae sp. nov.、乌桕毛虫脊茧蜂A. cuproetis sp. nov.;4个中国新记录:舟蛾脊茧蜂A. drymoniae(Watanabe)、夜蛾脊茧蜂A.nocturnus(Telenga)、白脊茧蜂A.pallidotor(Thunberg)、硕脊茧蜂A.praetor(Reinhard);此外3个已知种为:松毛虫脊茧蜂A.dendrolimi(Matsumura)、桑尺蠖脊茧蜂A.iaponicus(Ashmead)、毒蛾脊茧蜂A.lymantriae(Watanabe)。对新种作了全面的描述,并附有特征图、寄主及分布等情况。文中还附有一鉴别此10种的检索表。     

中国深沟茧蜂族分类研究及二新种记述（膜翅目：茧蜂科：茧蜂亚科）

记述中国茧蜂亚科深沟茧蜂族3属(泛深沟茧蜂属Aniphiaulax Kokoujev,1899,驼腹茧蜂属Hybogaster Szepligeti,1906和深沟茧蜂属Iphiaulax Foerster,1862)11种,其中有2新种:斑翅驼腹茧蜂Hybogaster zebripterae Wang et Chen,sp. nov.和乌海深沟茧蜂Iphiaulax wuhainensis Wang et Chen, sp. nov. 及2中国新记录种:短尾深沟茧蜂Iphiaulax impeditor(Kokoujev,1898)和长尾深沟茧蜂Iphiaulax mactator(Klug,1817)。长尾深沟茧蜂在吉林育自灰长角天牛 Acanthocinus aedilis Linn.幼虫,赤腹深沟茧蜂Iphiaulax impostor(Scopoli,1763)在辽宁和山西育自青杨天牛(山杨天牛)Saperda populnca Linn.幼虫。文中附有深沟茧蜂族3属的分属检索表、驼腹茧蜂属和深沟茧蜂属分种检索表和新种的形态特征图。所有标本均保存在浙江大学昆虫科学研究所(ZJUH)。     

中国寄生于蠹象和小蠹虫的三盾茧蜂—新种（膜翅目：茧蜂科）

记述采自黑龙江小兴安岭寄生于木蠹象和小蠹早的茧蜂科1新种--木蠹三盾茧蜂Trias pis nanchaensis sp.nov.,模式标本的正模保存于中国林业科学研究院昆虫标本馆,副模保存于农业林业大学昆虫标本室。     

中国侧沟茧蜂属一新种(膜翅目:茧蜂科:小腹茧蜂亚科)

本记述从寄主斜纹夜蛾饲养得到的侧沟茧蜂属Microplitls Forster 1新种：双斑侧沟茧蜂Microplitis bicoloratus Chert,sp．nov．。模式标本保存于福建农林大学植保学院益虫室。     

一种寄生梨茎蜂的重要天敌-梨茎蜂啮小蜂(膜翅目,姬小蜂科)新种记述

描述了寄生梨茎蜂Janus piri Okamoto et Muramatsu的一种重要天敌新种--梨茎蜂啮小蜂Tetrastichus janusi sp.nov.,该种属小蜂总科姬小蜂科啮小蜂属.新种群集外寄生于梨茎蜂幼虫,一般1头寄主上寄生4～14头个体,雌雄性比为2.6∶1.0.一年发生两代.在越冬代梨茎蜂幼虫中的寄生率达44.7%.新种在梨茎蜂的生物防治中具有良好的应用前景.这是啮小蜂亚科在国内外首次发现寄生于茎蜂科害虫.新种模式标本保存于中国林业科学研究院昆虫标本馆.     

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.     

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.     

Enterovirus 71 3C proteolytically processes the histone H3 N-terminal tail during infection

Highlights
1. The N-terminal tail of histone H3 is specifically cleaved during EV71 infection.
2. Viral protease 3C is identified as a protease responsible for proteolytically processing the N-terminal H3 tail.
3. Our finding reveals a new epigenetic regulatory mechanism for Enterovirus 71 in virus-host interactions.     

Detection of EBV and HHV6 in the Brain Tissue of Patients with Rasmussen’s Encephalitis

Rasmussen’s encephalitis (RE) is a rare pediatric neurological disorder, and the exact etiology is not clear. Viral infection may be involved in the pathogenesis of RE, but conflicting results have reported. In this study, we evaluated the expression of both Epstein-Barr virus (EBV) and human herpes virus (HHV) 6 antigens in brain sections from 30 patients with RE and 16 control individuals by immunohistochemistry. In the RE group, EBV and HHV6 antigens were detected in 56.7% (17/30) and 50% (15/30) of individuals, respectively. In contrast, no detectable EBV and HHV6 antigen expression was found in brain tissues of the control group. The co-expression of EBV and HHV6 was detected in 20.0% (6/30) of individuals. In particular, a 4-year-old boy had a typical clinical course, including a medical history of viral encephalitis, intractable epilepsy, and hemispheric atrophy. The co-expression of EBV and HHV6 was detected in neurons and astrocytes in the brain tissue, accompanied by a high frequency of CD8⁺ T cells. Our results suggest that EBV and HHV6 infection and the activation of CD8⁺ T cells are involved in the pathogenesis of RE.     

Perinatal Vertical Transmission of Chikungunya Virus in Ruili,a Town on the Border between China and Myanmar

正Dear Editor,Chikungunya virus (CHIKV), an arbovirus in the family of Togaviridae, genus Alphavirus, is transmitted by the A.aegyptii or A. albopictus mosquito, and causes disease in humans characterized by fever, rash, and arthralgia (Silva and Dermody 2017; Suhrbier 2019). It was first reported in 1953 in Tanzania, and caused only a few outbreaks and sporadic cases in Africa and Asia in last century. However, in the epidemic in 2004, CHIKV acquired mutations that conferred enhanced transmission by the A. albopictus mosquito(Schuffenecker et al. 2006). Since then, it has successively caused outbreaks in Africa, the Indian Ocean, South East Asia, the South America, and Europe (Zeller et al. 2016).     

Development of a Novel Reverse Transcription Loop-Mediated Isothermal Amplification Method for Rapid Detection of SARS-CoV-2

In conclusion, the novel visual RT-LAMP assay is a simple, rapid, and sensitive approach for detection of SARS-CoV-2, and it is ready for application in primary care and community hospitals or health care centers, and even patients' own houses in response to the current SARS-CoV-2 epidemic because the assay does not require sophisticated equipment and skilled personnel. Furthermore, it is also ready to be used in fields for screening samples from wild animals and environments to facilitate the identification of potential intermediate hosts that mediate the cross-species transmission of SARS-CoV-2 from bats to humans.