云南长崎齿瓢虫一新种：鞘翅目：瓢虫科

长崎齿瓢虫属Afissula Kapur自1955年建属以来,经各国学者不断发现及重新组合,迄今已报导13种。云南省以往没有这个属的记载,曹诚一等(1984)在整理云南省森林病虫普查标本时,发现沧源县有环管崎齿瓢虫Afissula kambaitana(Bielawski)的新分布,在瑞丽县发现了匙管畸齿瓢虫A.spatulata Cao et Xiao。1988年作者之一王红在云南永德县采到长崎齿瓢虫属昆虫6头,经鉴定为1新种,现记述如下。模式标本保存于西南林学院森保研究室。     

海南岛食植瓢虫属一新种和二种新记录（鞘翅目：瓢虫科）

论述了采自海南岛的食植瓢虫属Epilachna一新种和二种中国新记录：拟球端食植瓢虫E. paraglobiera 新种; 同亨食植瓢虫E. donghoiensis Hoang, 1978中国新记录; 戈特克食植瓢虫E. gokteika Kapur, 1961中国新记录。     

浙江小毛瓢虫属三新种记述（鞘翅目：瓢虫科）

本文采自浙江省瓢虫科小毛瓢虫属３新种：长爪小毛瓢虫,临安小瓢虫,倒齿小瓢虫。     

广西长崎齿瓢虫属二新种（鞘翅目：瓢虫科）

本文记述采自广西壮族自治区的长崎齿瓢虫属２新种,即弄岗崎齿瓢虫Ａｆｉｓｓｕｌａｎｏｎｇｇａｎｇｅｎｓｉｓ,ｓｐ．ｎｏｖ．和鸟喙崎齿瓢虫Ａ．ｏｒｎｉｔｈｏｒｒｈｙｎｃｈａ,ｓｐ．ｎｏｖ。模式标本除弄岗崎齿瓢虫Ａ．ｎｏｎｇｇａｎｇｅｎｓｉｓ（正模♂,配模♀和副模５♂４♀）保存在南京农业大学植保系外,其余标本保存在广西农科院植保所。     

广东拱颏瓢虫属新种记述

拱颏瓢虫属Stethorus Weise为小型瓢虫。目前该属已有记录最小的种为Stethoruskeralicus Kapur(Kapur 1961),体长仅0.85毫米,最大的种为Stethorus cruralis Sicard,体长亦仅达1.75毫米。主要以叶螨为食,是叶螨Tetranychus,Paratetranychus等的重要天敌。该属昆虫分布甚广,遍及古北区、东洋区、澳洲区、新北区,Kapur(1948)说明了     

湖南小毛瓢虫属三新记述：鞘翅目：瓢虫科

本文记述小毛瓢虫属ＳｃｙｍｎｕｓＫｕｇｅｌａｎｎ小瓢虫亚属Ｓｃｙｍｎｕｓ（Ｐｕｌｌｕｓ）Ｍｕｌｓａｎｔ三新种：枝角小瓢虫Ｓｓｙｍｎｕｓ（Ｐｕｌｌｕｓ）ｃｌａｄｏｃｅｒｕｓｓｐ．ｎｏｖ．,鞭丝小瓢虫Ｓｃｙｍｎｕｓ（Ｐｕｌｌｕｓ）ｍａｓｔｉｇｏｉｄｅｓｓｐ．ｎｏｖ．,肾斑小瓢虫Ｓｃｙｍｎｕｓ（Ｐｕｌｌｕｓ）ｎｅｐｈｒｏｓｐｉｕｌｓｓｐ．ｎｏｖ．。     

食植瓢虫属Epilachan中国新记录种及两种幼虫的形态记述（鞘翅目：瓢虫科）

记述食植瓢虫属Epilachna Chevrolat3种中国新记录种及其2种幼虫形态,编制了该属中国已知幼虫类检索秀。新记录种和幼虫标本均保存于南京农业大学昆虫标本室。     

中国小基瓢虫属Diomus研究（鞘翅目：瓢虫科）

本文回顾了小基瓢虫属Ｄｉｏｍｕｓ分类研究的历史沿革以及中国该属的研究简况,描述了小基瓢虫的分布情况及鉴别特征。对保存于华南农业大学、中国农业大学、中国科学院动物研究所、德国慕尼黑动物博物馆的一些标本及作者近年来采集的标本进行了研究,共鉴定出我国小基瓢虫属昆虫３种,其中包括２新种,即产于河北的长叶基瓢虫Ｄ．ｌｏｎｇｉｌｏｂｕｓ,ｓｐ．ｎｏｖ．和产于广东的膨囊基瓢虫Ｄ．ｔｕｍｅｆａｃｔｕｓ,ｓｐ．ｎｏｖ．,给出了种类检索表,每种都附以详细的特征图。新种模式标本存北京市农林科学院植保环保研究所     

中国小毛瓢虫二新种记述(鞘翅目：瓢虫科)

中国小毛瓢虫二新种记述（鞘翅目：瓢虫科）任顺祥,庞雄飞（华南农业大学昆虫生态室广州５１０６４２）本文描述采自贵州和四川的小毛瓢虫属ＳｃｙｍｎｕｓＫｕｇｅｌａｎｎ小毛瓢虫亚属Ｓｃｙｍｎｕｓ（Ｓｃｙｍｎｕｓ）Ｋｕｇｅｌａｎｎ二新种。模式标本保存于华南农业...     

贵州小毛瓢虫属三新种记述（鞘翅目：瓢虫科）

本文记述采自贵州省江口县梵净山自然保护区及镇宁县黄果树瀑布的小毛瓢虫属ＳｃｙｍｎｕｓＫｕｇｅｌａｎｎ小瓢虫亚属Ｓｃｙｍｎｕｓ（ＰｕｌｌｕＳ）Ｍｕｌｓａｎｔ３新种。模式标本保存于华南农业大学昆虫标本室。     

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.     

Entwicklungsgeschichte und Ultrastruktur von Pollenkitt und Exine bei nahe verwandten entomophilen und anemophilen Angiospermensippen derAlismataceae,Liliaceae, Juncaceae,Cyperaceae, Poaceae undAraceae

Some closely related members of the monocotyledonous familiesAlismataceae, Liliaceae, Juncaceae, Cyperaceae, Poaceae andAraceae with variable modes of pollination (insect- and wind-pollination) were studied in relation to the ultrastructure of pollenkitt and exine (amount, consistency and distribution of pollenkitt on the surface of pollen grains). The character syndromes of pollen cementing in entomophilous, anemophilous and intermediate (ambophilous or amphiphilous) monocotyledons are the same in principal as in dicotyledons. Comparing present with former results one can summarize: 1) The pollenkitt is always produced in the same manner by the anther tapetum in all angiosperm sub-classes. 2) The variable stickiness of entomophilous and anemophilous pollen always depends on the particular distribution and consistency of the pollenkitt, but not its amount on the pollen surface. 3) The mostly dry and powdery pollen of anemophilous plants always contains a variable amount of inactive pollenkitt in its exine cavities. 4) A step-by step change of the pollen cementing syndrome can be observed from entomophily towards anemophily. 5) From the omnipresence of pollenkitt in all wind-pollinated angiosperms studied one can conclude that the ancestors of anemophilous angiosperms probably have been zoophilous (i.e. entomophilous) throughout.

     

Identification and Characterization of the First Equine Parainfluenza Virus 5

正Dear Editor,Parainfluenza virus 5 (PIV5), known as canine parainfluenza virus in the veterinary field, is a negative-sense,nonsegmented, single-stranded RNA virus belonging to the Paramyxoviridae family (Chen 2018). The virus was first reported in primary monkey kidney cells in 1954 (Hsiung1972), then it has been frequently discovered in various