中国蛾蜡蝉科一新记录属并记一新种(半翅目:蛾蜡蝉科:涩蛾蜡蝉族)

报道了中国新记录属长蛾蜡蝉属Gomeda Distant,1906,该属隶属于蛾蜡蝉科Flatidae、涩蛾蜡蝉族Selizini,综述了该属的分类研究历史,并记述1新种——素长蛾蜡蝉Gomeda unicolorata,sp.nov.,提供了新种的形态和雌性外生殖器特征图,编制了本属分种检索表。新种模式标本保存在中国科学院动物研究所。     

中国碧蛾蜡蝉属的分类研究(半翅目:蛾蜡蝉科)

综述了碧蛾蜡蝉属Geisha Kirkaldy的分类研究历史,研究了中国碧蛾蜡蝉属种类,同意莎碧蛾蜡蝉G．sauteri Jacobi是碧蛾蜡蝉G．distinctissima（Walker）的异名。记述了中国碧蛾蜡蝉属4种,包括2新种——二叉碧蛾蜡蝉G．bifurcata,sp．nov．,秦岭碧蛾蜡蝉G．qinlingensis,sp．nov．。提供了分种检索表。模式标本保存在西北农林科技大学昆虫博物馆。     

中国埃蛾蜡蝉属分类研究（同翅目：蛾蜡蝉科）

综述了埃蛾蜡蝉属 Exoma Melichar的分类研究历史,研究了中国埃蛾蜡蝉种类,同意Leocerus属是埃蛾蜡蝉属Exoma的异名,将其归入埃蛾蜡蝉属并记述了1个新种——基斑埃蛾蜡蝉 Exoma basimacula,sp．nov．。提供了分种检索表。模式标本保存在西北农林科技大学昆虫博物馆。     

中国彩蛾蜡蝉属分类研究(半翅目,蛾蜡蝉科)

综述了彩蛾蜡蝉属Cerynia St(a)l的分类研究历史,研究中国彩蛾蜡蝉属种类.记述中国彩蛾蜡蝉属4种,包括1新种--指突彩蛾蜡蝉C.digitula sp.nov..提供了分种检索表.新种模式标本保存在西北农林科技大学昆虫博物馆.     

中国蛾蜡蝉科一新记录属及一新记录种

记述采自中国云南省的蛾蜡蝉科1新记录属：宽额蛾蜡蝉属Byhopsyma Melichar及1新记录种：宽额蛾蜡蝉Bythopsyrna circulata(Guerin—Meneville),绘了成虫特征图。     

中国缘蛾蜡蝉属分类与二新纪录种(半翅目,蛾蜡蝉科)

记述蛾蜡蝉科:Flatidae缘蛾蜡蝉属Salurnis Stal中国2新纪录种:海缘蛾蜡蝉S.hesita Medler,1992和埃缘蛾蜡蝉S.estora Miedler,1992,提供了形态及雄性外生殖器等特征图.制作了本属分布于中国的5个种的分种检索表.     

中国瓢蜡蝉科一新记录属--德里瓢蜡蝉属

报道了瓢蜡蝉科中国1新记录属——德里瓢蜡蝉属Delhina Distant及中国新记录种德里瓢蜡蝉D.eurybrachydoides Distant,绘制了其主要外形特征,首次描记雄性外生殖器特征。     

中国络蛾蜡蝉属Lawana分类与二新记录种

记述蛾蜡蝉科Flatidae络蛾蜡蝉属Lawana中国2新记录种——LawanaradiataDistant,1906和L.conspersa(Walker),1851。提供了形态描述、分布及形态图。制作了分种检索表。     

中国新记录属——犀瓢蜡蝉属分类研究（同翅目：瓢蜡蝉科）

综述了中国新记录属－－犀瓢蜡蝉属Angilodes的分类研究历史,研究了中国采集的种类,同意将该属归人瓢蜡蝉科Issidae,报道该属1个中国新记录种－－犀瓢蜡蝉Augilodes binghami (Distant 1906）,记述1个新种－端斑犀瓢蜡蝉Augilodes apicomacula,sp.nov.。提供了分种检索表。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。     

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.