长白山地区食蚜蝇科二新种记述(双翅目,食蚜蝇科)

在整理吉林省长白山地区的食蚜蝇标本时,发现2新种,分别为拟食蚜蝇属1新种,郑氏拟蚜蝇Parasyrphus zhengi sp.nov.,新种近似直带拟蚜蝇Parasyrphus lineola(Zetterstedt,1843),但新种复眼裸,翅暗黑色,足被黑毛,中足胫节端部黑色;长角蚜蝇属1新种,黑缘长角蚜蝇Chrysotoxum nigrimarginatum sp.nov.,新种近似侧宽长角蚜蝇Chrysotoxum fasciolatum(De Geer,1776),与C.fasicolatum的主要区别是新种腹部背板侧缘黑色,触角3节长度之比为1∶1∶4,后者腹部背板黑、黄相间,触角3节长度之比(背面观)约为0.8∶1.0∶3.0。本文除记述新种外,同时提供其特征图。模式标本保存在陕西理工学院动植物标本馆。     

新疆阳蝇属二新种(双翅目：蝇科)

东昆仑──阿尔金山地区,地处我国新疆东南隅,在该地区4000m以上地带采得的蝇科标本中,多数类群特殊;经厘订我国阳蝇属已达120余种,现对新疆的阳蝇属二新种进行记述。新种的模式标本保存于沈阳师范学院昆虫研究所。1揭阳蝇Helbomoschodactyla新种（图l～3）体长：巳8～6·Zmm。雄性：复眼探;额约为触角宽（等于后单眼外缘间距）的1．5倍,间额黑色,具极少数灰色粉被,在最狭处约等于前单眼宽,下眶鬃《对（少数为5对）,无上眶鬃;侧颜稍狭于额宽,约为触角宽的1．3倍,触角黑色,第三节为第二节的2．5倍长,芒呈羽状,最长的芒毛稍…     

云南省棒腹蜂属一新种(蜜蜂总科,隧蜂科)

本文记述云南省产棒腹蜂属Rhopalomelissa一新种。模式标本保存于中国科学院动物研究所,部分副模保存于中国科学院昆明动物研究所。 云南棒腹蜂 Rhopalomelissa (Trichorhopalomelissa) yunnanensis Wu et He,新种。 体长4—6毫米,黑褐色;腹部棒状。头扁平,宽大于长;复眼内侧稍凹入;上颚细长,具二齿,基半部深褐色,端半部黄褐色;颅顶后缘稍圆;额区中央具一明显纵脊;触角黑褐色,鞭状,长稍超过后胸,第一节最长,等于第三、四两节总长,第二节近球形,其余各节几等长;唇基及颜侧区密被褐黄色毛;侧单眼距稍短于复眼至单眼距离;胸部黑色;前胸、中胸背板、小盾片、后盾片被金黄色短毛,后盾片毛较密,小盾片上者混有少量金黄色长毛;颅顶后缘被少量金黄色毛;腹部黑褐色,第一、二及第三     

中国点池蝇属三新种 (双翅目 :蝇科 )(英文)

记述中国蝇科点池蝇属三新种 ,即 :①分布于新疆省东昆仑阿其克的煤漠点池蝇S .carbiarenosasp .nov .,新种近似于沙点池蝇S .arenosa (Ringdahl,1918) ,但新种间额略狭于侧额宽 ,侧额、侧颜粉被暗灰色 ,触角第三节长为宽的 1 5倍 ,髭角位于额角之后 ,前中鬃呈 2列长刚毛状 ;胸部炭黑色 ,具棕灰色粉被 ;翅基部褐色 ,平衡棒黑褐色 ;后足股节基半部具后腹鬃 ;雄侧尾叶侧面观前后缘平行 ,前缘基部具长毛等既可区别。②分布于云南省高黎贡山的毛眼点池蝇S .dasyoommasp .nov .新种近似于小沉点池蝇S .depressiuscula (Zetterstedt,1838) ,但新种复眼毛密而长 ;额宽狭于前单眼宽 ,侧颜狭于第三节触角宽 ;触角芒具短纤毛 ,最长芒毛短于芒基径 ;前足胫节中位后鬃 1～ 2 ,中足胫节后鬃 4～ 5 ,后足股节端部 1 3具 3～ 5根粗壮的前腹鬃 ,后足胫节前腹鬃 2 ,前背鬃 4～ 6 ;肛尾叶游离部较宽 ,侧尾叶侧面观末端无钩 ;雌性上眶鬃 1对 ,额绒黑色 ,中足胫节后鬃 3～ 4 ,腹部近圆形等与后者相区别。③分布于新疆省红其拉甫塔什库尔干的红其拉甫点池蝇S .kunjirapensissp .nov .,新种近似于岸点池蝇S .litorea (Fall啨ｎ ,182 3) ,但新种额宽约等于后单眼外缘间距 ,间额狭于一侧额 ;第三触角节长约为宽的 1 5倍 ,触角芒     

美蓝蚜蝇属二新种记述(双翅目,蚜蝇科)

在整理美蓝蚜蝇属标本时发现2新种：缺纹美蓝蚜蝇Melangyna evittata sp.nov.,秦岭美蓝蚜蝇Melangyna qinlingensis sp.nov.,模式标本保存于陕西理工学院资源生物重点实验室,文中列出中国已知种的检索表。 缺纹美蓝蚜蝇,新种Melangyna evittata sp.nov.（图1 ～3） 雌性 未知。 ♂体长12mm;翅长10mm。 正模♂, 2004-05-05,陕西长安（太兴森林公园） ,霍科科采。 本种近似于Melangyna olsufjevi Violovitsh,但新种颜面暗棕褐色,缺黑色条纹,各足胫节棕褐色,缺亚端暗色环。新种以颜面暗棕褐色,缺暗色条纹命名,取拉丁字e（x）-（失去）和（vittatus）（具条纹的）构成新种名。 讨论新种颜面不具暗色条纹,符合亚属Meligramma特征,但后足基节后腹端角具毛簇,与该亚属特征不符;另一方面,后足基节后腹端角具黑色毛簇,符合亚属Melangyna特征,但颜面无黑色中条,与该亚属特征不符。所以其特征介于亚属Melangyna和Meligramma之间,其分类地位还有待进一步研究。 秦岭美蓝蚜蝇,新种Melangyna qinlingensis sp.nov.（图4 ～11） 雌性 未知。 ♂体长9.5mm;翅长9mm。 正模♂, 2002-07-07,陕西眉县（太白山） ,霍科科采。 本种近似于Melangyna olsufjevi Violovitsh,但新种复眼裸,颜面中条伸达触角基部,宽,小盾片被毛全黑色,足主要黑色,尾器不同。 新种以模式产地命名。     

镶夜蛾属一新种及一新纪录(鳞翅目:夜蛾科)

本文记述镶夜蛾属Trichosea Grote一新种及一中国新纪录。 张镶夜娥Trichosea zhangi新种 翅展38—43mm,头部乳黄色,下唇须第1、2节外侧大部黑色,复眼外后方黑色,雄蛾触角线形,触角干黑色,两侧饰有淡黄色鳞片,复眼表面有纤毛:胸部乳黄色,翅基片基部及中部有黑斑,后胸有一V形黑纹及二黑斑,足黄白色,胫节与跗节各有黑斑,中足跗节大部分呈黑褐色;腹部淡黄色,背面有一列黑色毛簇,腹两侧各有一列黑斑:前翅乳黄色,基钱双线黑色,自前缘至亚中褶,外一线间断,内线双线黑色,内一线间断为4个黑长点,外一     

库蚊三新种之描述

作者整理1958年在云南思茅采集的昆虫标本时发现三种库蚊系属新种,均只有雄性。现将其形态描述如下: 1.毛股库蚊 Culex(Lophoceratomyia)pilifemoralis,新种 雄性 黄褐色中型蚊种。翅长约3毫米。 头部 枕部被有黑褐色直立叉状鳞片及狭弯鳞片;眼侧缘被有淡色狭弯鳞片,并形成一宽灰色区。喙黑色,基部下面无鬃。触须与喙约等长,黑色;基部外侧有一行小毛,长节内侧面近基部1/2部分有一行透明短硬小毛,末两节上只有少数长毛。触角黑色;梗节内侧有一钝突起;第6节(梗节作第一节计)有一丛淡黄色长毛及5枚叶状鳞片,鳞片长度约     

辽宁省虻属一新种记述(双翅目:虻科)

多村虻 Tabanus paganus,新种(图1) 雌 体长14—15毫米。灰黑色种。 头部 复眼有短毛(40×),具3条宽紫色带(回潮)。前额具灰色粉被及淡黄色毛,两侧平行,高度为基部宽度的3倍,顶端略宽于基部。基胛亮棕色,近方形,中部有皱纹,与眼缘分离,接触亚胛。中胛黑色,卵圆形,与眼和基胛分离。亚胛具黄灰色粉被。颊上半部黄灰色,下半部及脸均覆灰色粉被,具乳白毛。口鬃乳白色。触角第1、2节橙色,具     

我国皮蠹科豆象科二新记录种

胸纹粗腿豆象Caryedon lineatonota Arora(图1) 雄虫:体长4.6—4.8毫米,宽2.3—2.5毫米.触角第五至十节锯齿状,除第三至四节端部边缘黄褐色外皆为黑色;头黑色,两复眼间呈网状结构,疏被金黄色毛;额中脊明显,与唇基相连;复眼大而突出,在触角着生处稍呈凹缘。前胸背板被全黄色毛,亚圆锥形,后缘中央稍向后突出,侧角尖;表皮底色黄褐,中央有一条黑色纵纹,中纵纹每侧还有2—3条黑色纵纹。小盾片密被淡黄色毛,略呈三角形。     

缘蝽科三新种记述(半翅目:缘蝽科)

云奥缘蝽Aurelianus yunnananus Xiong,新种(图1,图2) 体黑赭色,被金黄色短毛,头、前足和中足及胸部腹面色较浅。触角各节末端和第4节色深近黑。小盾片末端淡白色。复眼黑褐带红泽,单眼玉红色。前翘膜片黑色。体瘦长,前翅不达腹末端。头顶具短纵刻纹。触角各节长Ⅰ:Ⅱ:Ⅲ:Ⅳ=4.4:4.05:3.4     

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