中国粉蚧科一新属一新种（同翅目：蚧亚目）

记述我国粉蚧科１新属：结粉蚧属Ｓｉｎｏｃｏｃｃｕｓ,ｇｅｎ．ｎｏｖ．及其模式种：采自天津南开大学校园榆树Ｕｌｍｕｓ ｐｕｍｉｌａ Ｌ．枝干树皮裂缝内的榆华粉蚧Ｓｉｎｏｃｏｃｃｕｓ ｕｌｍｉ,ｓｐ．ｎｏｖ．。模式标本保存在南开大学生物系。     

中国绵粉蚧属种类记述(同翅目:蚧总科:粉蚧科)

研究和整理了中国绵粉蚧属Ｐｈｅｎａｃｏｃｃｕｓ Ｃｏｃｋｅｒｅｌｌ的种类和分布。截至目前,我国该属计有２０种,其中包括本文３新种：无管绵粉蚧Ｐ．ａｔｕｂｕｌａｔｕｓ ｓｐ．ｎｏｖ．,内蒙粉蚧Ｐ．ｎｅｉｍｅｎｇｕｌｉｃｕｓ ｓｐ．ｎｏｖ．和山西绵粉蚧Ｐ．ｓｈａｎｘｉｅｎｓｉｓ ｓｐ．ｎｏｖ．及６个中国新纪录种：盐木绵粉蚧Ｐ．ａｒｔｈｒｏｐｈｙｔｉ Ａｒｃｈａｎｇｅｌｓｋａｙａ,时麦绵粉蚧Ｐ．ｐｒｅｉ     

中国黑粉蚧属及其近似属种类记述(半翅目:蚧总科:粉蚧科)

研究和整理了我国黑粉蚧属Ａｔｒｏｃｏｃｃｕｓ及其近似属的种类,计有５属１２种,其中包括２新种;鹤虱奥粉蚧Ａｌｌｏｃｏｃｃｕｓ ｌｅｐｐｕｌｕｓ Ｗｕ,ｓｐ．ｎｏｖ和山西配粉蚧Ａｌｌｏｔｒｉｏｎｙｍｕｓ ｓｈａｎｘｉｅｎｓｉｓ Ｗｕ,ｓｐ．ｎｏｖ．,和个中国新纪录种,细长黑粉蚧Ａｔｒｏｃｏｃｃｕｓ ｃｒａｃｅｎｓ Ｗｉｌｌｉａｍｓ。模式标本保存在山西农业大学蚧虫研究中心。     

枝圆盾蚧属新种记述（同翅目：蚧总科：盾蚧科）

本文记述了枝圆盾蚧属Ｄｉａｓｐｉｄｉｏｔｕｓ Ｃｏｃｋｅｒｅｌｌ一新种,危枝圆盾蚧Ｄｉａｓｐｉｄｉｏｔｕ ｐｅｒｎｉｃｉａｂｉｌｕｓ ｓｐ．ｎｏｖ．,该属是盾蚧科Ｄｉａｓｐｉｄｉｄａｅ中的一个小属。新种的模式标本保存在中国科学院动物研究所。     

绛蚧属一新种记述（同翅目：蚧总科：绛蚧科）

本文记述了采自云南西双版纳的绛蚧属１新种－－版纳绛蚧Ｋｅｒｍｅｓ ｂａｎｎａｅｎｓｉｓ Ｌｉｕ ｓｐ．ｎｏｖ．,对其雌、雄成虫和一龄若虫的形态特征分别进行了详细描述和图示。模式标本保存于山东农业大学植物保护系昆虫标本室。     

粉蚧科一新属一新种（同翅目：蚧总科）

本文记述同翅目蚧总科粉蚧科一新属一新种。即异星粉蚧属Ｈｅｔｅｒｏｈｅｌｉｏｃｏｃｃｕｓ ｇｅｎ．ｎｏｖ．,内蒙异星粉蚧Ｈ．ｉｎｎｅｒｍｏｎｇｏｌｉｃｕｓ ｓｐ．ｎｏｖ．。新种模式标本保存在山西农业大学蚧虫研究中心。     

皮珠蚧亚科—中国新记录属和一新种：同翅目：蚧总科：珠蚧科

本文讨论了中国新记录长珠蚧属Ｎｅｏｇｒｅｅｎｉａ的分类地位,记述了寄生在刺树皮下的１新种－枣树长珠蚧Ｎ．ｚｉｚｙｐｈｉ,ｓｐ．ｎ．,模式标本存放在山西农业大学植物保护系。     

山西星粉蚧属二新种记述（同翅目：蚧总科：粉蚧科）

本文记述采自中国山西的星粉蚧属２新种,模式标本保存在山西农大蚧虫研究中心。１．无脐星粉蚧Ｈｅｌｉｏｃｏｃｃｕｓａｃｉｒｃｕｌｕｓ,新种（图１）本新种与Ｈ．ＢａｏｔｏｕｉＴａｎｇ,１９８８为本属中无腹脐者。两种的区别在于后种星管腺２种,且多;而新种星管腺１种,且少。正模♀,蒿（Ａｒｔｅｍｉｓｉａｓｐ．）,山西沁水,１９９５－Ⅶ－２１,武三安采;副模１２♀♀,同正模;５♀♀,青蒿（Ａｒｔｅｍｉｓｉａａｐｉａｃｅａ）,其它同正模２．苜蓿星粉蚧Ｈｅｌｉｏｃｏｃｃｕｓｍｅｄｉｃａｇｉｃｏｌａ,新种（图２）本新种与Ｈ．ｐａｖｌｏｖｓｋｉＢｏｒｃｈｓｅｎｉｕｓｅｔＴｅｒｅｚｎｉｋｏｖａ,１９５９相近,其区别在于新种星管腺少,只在后体部存在,而后种星管腺多,在体背缘成纵列。正模♀,苜蓿（Ｍｅｄｉｃａｇｏｓａｔｉｖａ）,山西沁水,１９９５－Ⅶ－２２,武三安采;副模６♀♀,同正模     

皮珠蚧亚科一中国新记录属和一新种（同翅目：蚧总科：珠蚧科）

本文讨论了中国新记录长珠蚊属Ｎｅｏｇｒｅｅｎｉａ的分类地位,记述了寄生在枣树皮下的１新种──枣树长珠蚧Ｎ．ｚｔｚｙｐｈｉ,ｓｐ．ｎ．,模式标本存放在山西农业大学植物保护系。     

四索跳小蜂属二新种(膜翅目:跳小蜂科)

本文记述跳小蜂科四索跳小蜂属二新种,白轮蚧四索跳小蜂Ｐｌａｇｉｏｍｅｒｕｓ ａｕｌａｃａｓｐｉｓ ｓｐ．ｎｏｖ．和大棒四索跳小蜂Ｐｌａｇｉｏｍｅｒｕｓ ｍａｇｎｉｃｌａｖｕｓ ｓｐ．ｎｏｖ．标本采自云南省,从柑桔上的盾蚧育得。     

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.