中国粘叶蜂属一新种(膜翅目:叶蜂科)

记述了采自中国河南省太行山区和福建光泽的叶蜂科粘叶蜂属1新种:半环粘叶蜂Caliroa semicincta Wei,sp.nov.。该新种与欧洲种C.annulipes(Klug,1814)比较近似,但后足胫节基部3/5和基跗节基部4/7白色,触角第3节等长于端部4节之和,前翅2r脉等长于Rs脉第4段,锯腹片锯刃内外侧均具2枚明显的亚基齿,刃间膜等宽于锯刃,并明显鼓起,节缝刺毛带很宽,最宽处等宽于带间距等,与后者不同。新种模式标本保存于中南林业科技大学模式昆虫标本室。     

中国三节叶蜂属一新种(膜翅目,三节叶蜂科)

记述中国三节叶蜂科三节叶蜂属1新种,长颊黑毛三节叶蜂Arge dolichogenata Wei et Nie,sp.nov..新种与Arge gracilicornis(Klug,1814)近似,但体型显著较大,体长9～10 mm;触角明显粗壮,短于中胸;颜面和内眶刻点粗密,侧脊弧形弯曲,额窝深,额脊显著;前翅2Rs室几乎等长于1Rs室,Rs脉第3段2倍于Rs第4段长,前后翅Cu<,2脉桩显著;雌虫锯腹片锯刃强烈突出;雄虫下生殖板端部宽截形,阳茎瓣头叶较宽,尾突窄长,腹侧中钩长且向上勾曲.新种模式标本保存于中南林业科技大学昆虫模式标本室.?＃     

中国异片叶蜂属一新种(膜翅目,叶蜂科)

记述采自中国山西和河北的叶蜂科蔺叶蜂亚科异片叶蜂属1新种:尖鞘异片叶蜂Astethomostus acutithecus Wei et Wang,sp.nov..新种与白鳞异片叶蜂A.tegularis Wei et Zhang,2005近似,但锯鞘端部尖,锯刃长且平坦,亚基齿大型,中基部锯刃内外侧亚基齿仅1～2枚,雄虫翅基片黑色,阳茎瓣外顶角折叶短三角形.简要记述了该属的属征,编制了异片叶蜂属分种检索表.新种模式标本保存于湖南长沙中南林业科技大学昆虫模式标本室.     

中国三节叶蜂属(膜翅目,三节叶蜂科)一新种及Arge xanthogaster种团东亚种类检索表(英文)

记述采自记述中国三节叶蜂科三节叶蜂属1新种:白尾晴腹三节叶蜂Arge albocaudalica Wei,Yan et He.sp.nov..本种与Arge xanthogaster (Cameron,1876)很相似,但腹部黑褐色,端部2节背板和锯鞘黄白色;后翅臀窒柄短于后翅M室长,锯鞘背面观内侧切口很小,深度明显短于锯鞘侧叶端部宽;锯腹片14刃,第2节缝最长粗刺毛约等长于锯节宽度的3/4,节缝粗毛每节约9个,第8节缝最长粗刺毛等宽于该处锯节宽.定义了Arge xanthogaster种团,编制了该种团东亚地区已知种类检索表.     

平背叶蜂族一新属新种暨分属检索表(膜翅目:叶蜂科)

记述广西壮族自治区十万大山地区平背叶蜂族1新属：蔡氏叶蜂属Caiina gen．nov．及1新种：短鞘蔡氏叶蜂Caiina brevitheca Wei sp．nov．，该属隶属于叶蜂科平背叶蜂亚科平背叶蜂族歧爪叶蜂亚族，与歧爪叶蜂属Nagamasaia Togashi最近似，但唇基端部亚截形，缺口很浅，爪内齿不显著长于外齿，前翅2Rs室显著短于1R1 1RS之和，后翅具1个封闭中室，Rs室开放，后足跗节明显长于胫节，锯鞘端等长于锯鞘基，锯刃平刃型，具多数微小的亚基齿，锯腹片刺毛带互相连接等，与之显著不同。编制了平背叶蜂族分亚族和属检索表。模式标本保存于中南林学院昆虫模式标本室。     

中国平背叶蜂亚科两新种(膜翅目,叶蜂科)

记述中国叶蜂科平背叶蜂亚科两新种:黄氏元叶蜂Taxonus huangleii Wei,Liao et Huang,sp.nov.和黄胫秋叶蜂Apethymus xanthotibialis Wei,sp.nov.,前者与Taxonus flavicornis Wei很相似,但该种前、中、后胸侧板以及后胸背板均有明显黑斑,中胸后背片黑色,中胸前侧片中部刻点稀疏,具明显光滑间隙,锯腹片9～10锯刃窄于刃间膜,节缝刺毛带中部宽约为锯节的1/3;后者与Apethymus kolthoffi(Forsius)比较近似,但各足胫节和跗节全部黄褐色,小盾片黑色,后头延长,单眼后区长几乎等于宽,触角鞭节明显侧扁,锯鞘很短,仅等长于后足基跗节,后翅臀室柄长于cu-a脉1/2,中部锯刃短高,仅具4～6个外侧亚基齿.新种模式标本保存于中南林业科技大学昆虫模式标本室.     

中国带斑叶蜂属一新种及世界已知种检索表（膜翅目：叶蜂科）

记述中国带斑叶蜂属Emphytopsis Wei & Nie 1新种:斑唇带斑叶蜂Emphytopsis maculoclypea Wei sp. nov.。该新种与刻胸带斑叶蜂E. punctata Wei & Nie, 1998以及单带带斑叶蜂E. unimaculata Wei, 2011近似,但新种的唇基端部、后眶后缘黑色;中胸前侧片上部和中后足基节腹侧具显著黑斑;单眼后区平坦,不高于上眶;单眼后区侧沟十分微弱;锯腹片中部锯节的纹孔线下域高宽比约等于1.8(后两种唇基、后眶后缘、中胸前侧片上部和中后足基节腹侧均无黑斑;单眼后区稍隆起,明显高于上眶;单眼后区侧沟显著;锯腹片中部锯节的纹孔线下域高宽比约等于1.4)。文中还编制了带斑叶蜂属世界已知种检索表。     

中国俏叶蜂属分类研究(膜翅目,叶蜂科,平背叶蜂亚科)

简要回顾了中国平背叶蜂族的分类研究状况.记述了中国俏叶蜂属Hemathlophorus种类,编制了俏叶蜂属分种检索表,描述了1新种:短颊俏叶蜂Hemathlophorus brevigenatus sp.nov.,新种颚眼距等于单眼半径,中胸腹板大部和后足股节基部3/4亮黄色,雌虫腹部第2、5节背板具中位小黑斑,唇基缺口较浅,POL:OOL:OCL=2:4:5,爪内齿短于外齿,前翅cu-a脉基部与1M脉基部间距仅为1r-m脉长的1/2,R M脉段短于cu-a脉,2r脉交于2Rs上缘中部,后翅R1室的附室仅等宽于单眼直径,锯鞘腹缘弧形突出,锯腹片15锯刃,中部锯刃间距等宽于锯刃,锯刃端部尖出等,可以与同属已知的3种鉴别.     

中国钩瓣叶蜂属一新种(膜翅目,叶蜂科)

钩瓣叶蜂属隶属于叶蜂科,已知230余种,中国已经报道77种.记述中国钩瓣叶蜂属1新种:尖唇钩瓣叶蜂Macrophya acuminiclypeus sp.nov.,该种与女贞钩瓣叶蜂 M.ligustri Wei et Huang,1997近似,但唇基缺口深,侧角狭长,端部尖,头部额区和中胸侧板刻点粗密,中胸背板前叶中沟模糊,几乎消失,后足股节基部1/4黄白色,锯腹片22刃,中部锯刃具10～11个后位亚基齿等,差别明显,易于鉴别.正模♀,江西萍乡芦溪,2004-04-03,魏美才采;副模:1♀,湖南浏阳,1985-05-08,童新旺,1♀,福建武夷山,1 100 m,2004-05-20,周虎.新种模式标本保存于中南林业科技大学昆虫模式标本室.     

中国叶蜂两新种(膜翅目,叶蜂科)

记述了中国叶蜂两新种:黑腹近脉叶蜂Phymatoceropsis melanogaster sp.nov.和宽环钝颊叶蜂Aglaostigma laticinctum sp.nov.,前者与Phymatoceropsis stigmaticalis Wei et Nie近似,但头部、胸部侧板、胸部腹板黄褐色,翅痣黑色,后翅臀室柄微短于cu-a脉,锯腹片19刃,阳茎瓣头叶近横方形,下腹角显著突出等,差别显著,易于鉴别;后者与Aglaostigma bicolor Wei和Aglaostigma tertium Zinovjev近似,但触角黑色,腹部背板第1和第3节、第7～10节、内眶中下部条斑、后眶中上部宽斑白色,后足股节褐色,前翅2Rs室短于1Rs,后胸后侧片后角宽圆,触角短,约等长于头胸部之和,容易与后二种鉴别.新种模式标本保存于中南林学院昆虫模式标本室.     

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.     

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     

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.     

鸡传染性法氏囊病病毒研究进展

传染性法氏囊病(Infection bursal disease, IBD)是由鸡传染性法氏囊病毒(Infectious bursal disease virus, IBDV)引起的鸡和火鸡的一种高度接触性传染病,给世界各国的禽养殖业带来了巨大损失.自IBDV发现至今新的变异株不断出现,分子结构的改变导致病毒致病力的改变及宿主对疫苗应答的改变,使得传统的疫苗已不能控制其流行,因此各国学者对其基因组结构和功能进行了广泛深入的研究,并积极研制新型有效的疫苗以达到防治的目的.     

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.     

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).