云南齿爪蠊属二新种（蜚蠊目：姬蠊科）

本文报道了采自云南西双版纳的齿爪蠊属Symplocodes Hebard二新种:臂突齿爪蠊S. brachialis sp. nov. 和长柄齿爪蠊S. manubria sp. nov.。对新种的特征进行了描述,并与近似种作了比较。     

中国玛蠊属三新种记述(蜚蠊目,姬蠊科)

刺玛蠊属Margattina Bey-Bienko,1958是玛蠊属Margattea Shelford,1911新的同物异名。记述了产于中国的玛蠊属Margattea Shelford,1911的3新种并提出1新组合:华丽玛蠊M.speciosa sp.nov.,分布于湖南、江西;岔突玛蠊M.furcata sp.nov.,分布于贵州;无斑玛蠊M.immaculata sp.nov.,分布于浙江;三刺玛蠊M.trispinosa (Bey-Bienko,1958)comb.nov.,且附中国已知种的检索表。新种模式标本保存在中国科学院上海昆虫博物馆。     

锯爪蠊属一新种记述(蜚蠊目,姬蠊科,伪姬蠊亚科)(英文)

记述我国锯爪蠊属Chorisoserrata1新种,即短尾锯爪蠊Chorisoserrata brevicaudata sp.nov.,补充了该属的属征,提供该属分种检索表。短尾锯爪蠊,新种Chorisoserrata brevicaudata sp.nov.(图1~13)新种与Chorisoserrata jendekiVidlika相似,主要区别特征为:1)左阳茎指状凸起短且末端钝圆,后者长且末端尖锐;2)中阳茎端部钝圆,后者端部尖锐;3)中阳茎附属骨片刷状,端部具刺,后者端部钝圆无刺;4)腹部第7背板不特化,后者特化,中部具不明显的腺体。正模♂,云南勐腊勐仑,海拔800m,1981-04-10,李法圣采。副模1♀,云南勐腊勐仑,海拔800m,1981-04-10,李法圣采。词源:新种种名源于拉丁词brevi(短)和cauda(尾),表示该种左阳茎指状凸起短小。     

黑胸大蠊的生物学

黑胸大蠊(Periplaneta fuliginosa Serville)是我国室内蠊(俗称蟑螂)的重要种,属蠊目、螊科、大蠊属。此虫分布极广,为害甚烈,不但啃食、污染和咬损室内的各种食品、衣物、书籍、皮革等,还携带传播人、畜疾病的痢疾杆菌、副伤寒杆菌、沙门氏菌、绿脓杆菌等种致病菌和蛔虫卵、钩虫卵等多种寄生虫卵,是必须防治的室内害虫。作者于1985年以来,对黑胸大蠊的生物学特性进行了初步研究,现总结如下。形态特征 (一)成虫大型,黑褐色,有较强的光泽。雌虫体长2.8-3.3cm、体宽1.2-1.5cm,前翅长2.1-2.3cm。肛上板中线隆起成脊,后缘呈三角形切口,形成左右两片,各片后端纯圆,切口顶端尖锐。下生殖板大型,中线隆起如船底。雄体长2.7-3.3cm、宽1.1-     

中国蠊泥蜂属一新种记述(膜翅目:蠊泥蜂科)

记述采自云南的蠊泥蜂科Ampulicidae蠊泥蜂属Ampulex l新种;扁唇蠊泥蜂Ampulex clypecomplana Chen et Li,sp.nov.,并与近似种Ampulex dissector(Thunberg,1822)作了比较。模式标本保存在云南农业大学昆虫标本室。     

中国拟截尾蠊属二新种和三新纪录种(蜚蠊目,姬蠊科)

记述中国拟截尾蠊属Hemithyrsocera Saussure 2新种和3新纪录种:二叉拟截尾蠊Hemithyrsocera bifurcata Che,sp.nov.,多突拟截尾蠊Hemithyrsocera multicuspidata Wang,sp.nov.,缘拟截尾蠊H.marginalis(Hanitsch)(中国新纪录种,国内分布:云南,广东),刺突拟截尾蠊H.macifera(Roth)(中国新纪录种,国内分布:云南,广西)和福拟截尾蠊 H.fulmeki Hanitsch(中国新纪录种,国内分布:福建,云南).文中给出了所有中国种类的检索表.模式标本保存在西南大学标本室和中国科学院动物研究所.     

中国新叶蠊属一新种和一新记录种记述(蜚蠊目：姬蠊科)

In the present paper, Neoloboptera Princis is reviewed and one new species, Neoloboptera choui Che, sp. nov., and one new record species, N. reesei Roth, are described and illustrated. All type specimens are kept in the Insect Collection of Southwest University (SWU).     

中国伪姬蠊亚科一新纪录属和一新种记述(蜚蠊目,姬蠊科)(英文)

报道了中国伪姬蠊亚科1新纪录属,拟刺蠊属Shelfordina Hebard(国外分布:东洋区;国内分布:福建),1新种绕茎拟刺蠊Shelfordina volubilis Wang,sp.nov..模式标本保存在西南大学标本室.     

中国毡蠊属二新种和一纪录种记述(蜚蠊目,姬蠊科)

1弧毡蠊,新种 facobsonina arce sp.nov.本种与简毡蠊 facobsonina simples Hebard,1929相似,可从以下特征区分:1)腹部第7背板不特化,后者特化,具1对圆形凹陷;2)中阳茎粗壮,呈棒状具1刷状附属阳茎,后者细长无刷状附属阳茎;3)下生殖板的后端部弧状突出,后缘波状弯曲,后者后端部略弧状突出,后缘近平截.正模♂,湖北秭归九头岭,100 m,1993-06-12,李文柱采.副模:1♂,湖北秭归九头岭,150 m,1993-07-13,姚建采;3♂♂,1♀,同正模;1♂,湖北秭归九头岭,150 m,1993-06-13,黄润质采;1♂,湖北秭归九头岭,150 m,1993-06-12,姚建采;1♂,广西龙胜花绑林区,1963-06-7,刘思孔采.2扭毡蠊,新种,Jacobsonina tortuosa sp.nov.本种与特毡蠊 Jacobsonina aliena(Brunner,1893)相似,但可从以下特征区分:1)下生殖板左侧角呈倒"L"形缺刻,右侧角圆滑呈指状,左侧缘波状弯曲,右侧缘明显弧状突出,但后者的侧缘微凹入,端部窄且平截;2)中阳茎粗壮,呈棒状无附属阳茎,后者中阳茎弯曲且其下具1粗壮的骨片.正模♂,云南西双版纳景洪,650 m,1958-07-5,孟绪武采.副模:2♂♂,云南西双版纳大勐龙,650 m,1957-06-17,王书永采;1♂,同正模;1♂,云南西双版纳大勐龙,650 m,1957-07-10,洪淳培采.     

中国一新纪录属和一新种记述(蜚蠊目,姬蠊科,伪姬蠊亚科)

锯爪蠊属Chorisoserrata Roth全世界共记载2种,分布于苏门答腊岛和越南,在中国尚属首次报道,并描述1新种.双叉锯爪蠊,新种Chorisoserrata biceps sp.nov.(图1～9)本种与Chorisoserrata npicalis(Hanitsch)相似,但可以从以下特征区分:1)前者头部无斑纹,后者头部复眼间具2条黑色条带;2)下生殖板尾刺之间突出部分后缘凹入并且侧缘明显上卷呈筒状,后者后缘呈圆弧状突出;3)体形较大,前翅长11.5～12.0 mm,总长13.5～14.0 mm;后者较小,前翅长8.6～9.3 mm,总长9.6 mm.正模♂,海南吊罗山,1985-04-29,李伟华采.副模1♂,1♀,海南吊罗山,1985-04-28/29,李伟华,张京红采;1♀,广西扶隆平龙山,1998-03-14,武春生采;1♂,海南尖峰岭,1983-07-28,华立中采;1♂,海南尖峰岭,1981-12-26,刘元福采.     

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.