中国璐蜡蝉科一新记录属Podoschtroumpfa及其一新记录种（半翅目：璐蜡蝉科）

记述璐蜡蝉科1中国新记录属:狭璐蜡蝉属Podoschtroumpfa Soulier-Perkins及采自云南的该属1新记录种:红带狭璐蜡蝉Podoschtroumpfa rubrolineata Liang,首次描述了该新记录种的雄性外生殖器特征,并提供了该新记录种的生境照片。     

中国璐蜡蝉科一新记录属及一新种记述（同翅目∶蜡蝉总科）

记述璐蜡蝉科Ｌｏｐｈｏｐｉｄａｅ１个中国新记录属：阿柯璐蜡蝉属Ａｃｏｔｈｒｕｒａ Ｍｅｌｉｃｈａｒ,ｎｅｗ ｒｅｃｏｒｄ和１新记录种：红缘阿柯璐蜡蝉Ａｃｏｔｈｒｕｒａ ｉｍｐｕｎｃｔａｔａ（Ｊａｃｏｂｉ）,ｎｅｗ ｒｅｃｏｒｄ以及１新种：褐带阿柯璐蜡蝉Ａｃｏｔｈｒｕｒａ ｆｕｃｉｚｏｎａ,ｓｐ．ｎ．。模式标本保存在西北农林科技大学昆虫博物馆。     

中国璐蜡蝉科一新记录属及一新种记述(同翅目:蜡蝉总科)

记述璐蜡蝉科 Lophopidae1个中国新记录属 :阿柯璐蜡蝉属 AcothruraMelichar,new record 和 1新记录种 :红缘阿柯璐蜡蝉 Acothrura impunctata(Jacobi) ,new record以及 1新种 :褐带阿柯璐蜡蝉 Acothrura fucizona,sp.n.。模式标本保存在西北农林科技大学昆虫博物馆     

蒙瓢蜡蝉属Mongliana Distant的分类研究（同翅目：蜡蝉总科：瓢蜡蝉科）

综述蒙瓢蜡属的分类研究历史，记述中国蒙瓢蜡蝉属Mongliana Distant 7种，其中包括5新种：柔尖蒙飘蜡蝉Mongoliana lanceolata,sp.nov.,三角蒙飘蜡蝉Mongoliana triangularis,sp.nov，锯缘蒙瓢蜡蝉Mongoliana serrata,sp.nov.,褐斑蒙瓢蜡蝉Mongoliana naevia,sp.nov.和曲纹蒙瓢蜡蝉Mongoliana sinuata,sp.nov.绘制了雄性外生殖器及前翅主要特征图，并列有分种检索表。新种模式标本均保存在西北农林科技大学昆虫博物馆。     

鳖扁蜡蝉和娇弱鳎扁蜡蝉雌性生殖器的描述(半翅目,蜡蝉总科,扁蜡蝉科)

对扁蜡蝉科(半翅目,蜡蝉总科)中鳖扁蜡蝉Cixiopsis punctatus Matsumura和娇弱鳎扁蜡蝉Tambinia debilis St(a)l的雌性生殖器进行了详细描述,绘制特征图并指明各部分的结构名称.结果表明前者生殖管道属于单开口类型,而后者是双开口类型.雌性生殖器特征可为分类学和系统发育分析提供更多的参考信息.     

中国短象蜡蝉属一新种记述(半翅目,蜡蝉总科,象蜡蝉科)

记述采自中国海南、贵州、广东的短象蜡蝉属Dictyopharina Melichar(半翅目,蜡蝉总科,象蜡蝉科,象蜡蝉亚科)1新种,即六突短象蜡蝉D.hexasaca sp.nov.。编制了短象蜡蝉属分种检索表,提供了新种的鉴别特征图。新种模式标本保存于贵州大学昆虫研究所。     

扁足瓢蜡蝉属分类研究(半翅目,蜡蝉总科,瓢蜡蝉科)

对扁足瓢蜡蝉属Neodurium Fennah(半翅目,蜡蝉总科,瓢蜡蝉科)进行了重新描记,该属目前已知3种,其中2新种,即指扁足瓢蜡蝉Neodurium digitiformum Ran et Liang,sp.nov.和平扁足瓢蜡蝉Neodurium flatidumRan et Liang,sp.nov..新种模式标本保存在中国科学院动物研究所.     

黄瓢蜡蝉属分类研究(半翅目,蜡蝉总科,瓢蜡蝉科)

对东洋区黄瓢蜡蝉属Flavina Stal(半翅目,蜡蝉总科,瓢蜡蝉科)的种类进行了分类研究,描记2新种,即尖胸黄瓢蜡蝉Flavina acuta sp nov.(Laos,Vietnam)和四刺黄瓢蜡蝉Flavina quadrispina sp.nov.(Thailand).新种模式标本保存在Bernice P.Bishop Museum,Honolulu,Hawaii,USA.     

蒙瓢蜡蝉属Mongoliana Distant的分类研究(同翅目: 蜡蝉总科: 瓢蜡蝉科)

综述蒙瓢蜡蝉属的分类研究历史,记述中国蒙瓢蜡蝉属Mongoliana Distant 7种,其中包括5新种矛尖蒙瓢蜡蝉Mongoliana lanceolata, sp. nov.,三角蒙瓢蜡蝉Mongoliana triangularis, sp. nov.,锯缘蒙瓢蜡蝉Mongoliana serrata, sp. nov.,褐斑蒙瓢蜡蝉Mongoliana naevia, sp. nov. 和曲纹蒙瓢蜡蝉Mongoliana sinuata, sp. nov.;绘制了雄性外生殖器及前翅主要特征图,并列有分种检索表.新种模式标本均保存在西北农林科技大学昆虫博物馆.     

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.