中国星水虻属三新种(双翅目:水虻科)

@@ 本文记述中国星水虻属3新种,即双斑星水虻Actina bimaculata,sp.nov.,三斑星水虻A trimaculata,sp.nov.和单斑星水虻A unimaculata,sp.nov..模式标本保存在中国农业大学昆虫博物馆.     

中国台湾星水虻属二新种(双翅目,水虻科)(英文)

记述台湾星水虻属2新种,四斑星水虻Actina quadrimaculata sp.nov.,颜氏星水虻A.yeni sp.nov.。新种模式标本保存在中国农业大学昆虫博物馆。     

中国柱角水虻亚科三新种(双翅目,水虻科)(英文)

记述我国柱角水虻亚科3新种,即周氏柱角水虻Beris zhouae sp.nov.,条斑离眼水虻Chorisops striata sp.nov.,弯突星水虻Actina curvata sp.nov.。模式标本保存在中国农业大学昆虫博物馆。     

中国星水虻属五新种(双翅目,水虻科)(英文)

记述我国星水虻属5新种,即基褐星水虻Actina basalis sp.nov.,贡山星水虻A.gongshana sp.nov.,长角星水虻A.longa sp.nov.,腾冲星水虻A.tengchongana sp.nov.和张氏星水虻A.zhangae sp.nov.。新种模式标本保存在中国农业大学昆虫博物馆。1基褐星水虻,新种Actina basalis sp.nov.(图3～4)新种与西藏星水虻A.xizangensis Yanget Nagatomi有些近似,但触角比头部短,中足胫节基部暗黄色。正模♂,云南金平保护站,2006-05-18,张俊华采。副模2♂♂,云南金平丫口,2006-05-18,张俊华采。2贡山星水虻,新种Actina gongshana sp.nov.(图5～6)新种与双叶星水虻A.bilobata Li,Zhanget Yang近似,但前足胫节褐色且基部暗黄色,触角鞭节黑色且基部黄褐色,阳茎三叶。正模♂,云南贡山丹侏,2007-05-18,刘星月采。副模2♂♂,同正模。3长角星水虻,新种Actinalonga sp.nov.(图1～2)新种与变星水虻A.varipes Lindner近似,但头胸背面紫色,触角比头部长。正模♂,西藏林芝,3050m,1978-06-04,李法圣采。4腾冲星水虻,新种Actina tengchongana sp.nov.(图7～8)新种与黄端星水虻A.apici flava Li,Zhanget Yang近似,但头部背面紫色,生殖基节腹面愈合部基部呈V型凹缺,阳茎中叶钝而侧叶端部稍内弯。正模♂,云南腾冲自治,2007-05-31,刘星月采。5张氏星水虻,新种Actinazhangae sp.nov.(图9～10)新种与长突星水虻A.elongata Li,Zhanget Yang很近似,但后足腿节无褐色前条纹,后足胫节基部褐色,M3不直接与盘室相连。正模♂,云南金平丫口,2006-05-18,张俊华采。     

中国线角水虻属四新种(双翅目,水虻科)

记述线角水虻属4新种,即离斑线角水虻N. dissitus sp.nov.,黄颜线角水虻N.faciflavus sp.nov.,黄腹线角水虻N.ventiflavus sp.nov.和新疆线角水虻N.xinjianganus sp.nov,.模式标本保存在中国农业大学昆虫博物馆.     

中国距水虻属六新种(双翅目:水虻科)

记述中国距水虻属Allognosta Meigen 6新种,即保山距水虻 A.baoshana,sp.nov.,红河距水虻A.honghensis,sp.nov.,金平距水虻A.jinpingensis,sp.nov.,单斑距水虻A singularis,sp.nov.,腾冲距水虻A.tengchongana,sp.n...     

中国距水虻属新种记述(双翅目,水虻科)

记述我国距水虻属Allognosta 4新种,即黑端距水虻A.apicinigra sp.nov.、刘氏距水虻A.liui sp.nov.、宁夏距水虻A.ningxiana sp.nov.和雁山距水虻A.yanshana sp.nov,.模式标本保存在中国农业大学昆虫博物馆.     

中国距水虻属四新种(双翅目,水虻科)(英文)

记述我国距水虻属Allognosta 4新种,基黑距水虻A.basinigra sp.nov.,彩旗距水虻A.caiqiana sp.nov.,大龙潭距水虻A.dalongtana sp.nov.,梁氏距水虻A.liangi sp.nov.。模式标本保存在中国农业大学昆虫博物馆。     

贵州距水虻属新种记述(双翅目,水虻科)

首次报道我国贵州距水虻属Allognosta 4个种(包括3新种或亚种),即背斑距水虻A.dorsalis sp.nov.,梵净山距水虻A.fanjingshana sp.nov.,斑胸距水虻A.maculipleura Frey 和黑腿距水虻Allognosta flavofemoralis nigrifemur subsp.nov,.模式标本保存在中国农业大学昆虫博物馆.     

中国水虻亚科一新记录属及二新种记述（双翅目：水虻科）

记述中国水虻亚科1新记录属:诺斯水虻属Nothomyia Loew,1869及2新种:即长茎诺斯水虻N. elongoverpa sp. nov.和云南诺斯水虻N. yunnanensis sp.nov.模式标本保存在贵州大学昆虫研究所标本馆。     

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.