Description of a new whitefly,Pealius satakshiae Dubey (Hemiptera: Aleyrodidae), infesting Quercus leucotrichophora (Fagaceae) in the Western Himalaya,India

ABSTRACT

A new whitefly species, Pealius satakshiae Dubey, found infesting Quercus leucotrichophora A. Camus (Fagaceae) in the Chail Wildlife Sanctuary, Himachal Pradesh, India, is described. Puparia of the new species differ from described Pealius species in being larger in size, having a differentiated cephalus, rhachisform abdomen and reduced abdominal segment VII, and lacking the first abdominal setae. Puparial characteristics for the genus Pealius Quaintance and Baker in relation to new species are discussed. Camera lucida drawings, images of habitus and holotype, and scanning electron microscope photomicrographs are provided.

http://www.zoobank.org/lsid:zoobank.org:pub:9712A865-4DD6-457B-84B0-1C7873316DE4     

3.8^s50／50改性黄洋麻／毛型粘胶仿毛地毯纱的研制

本文介绍了3.8^s（153.4特）、50/50改性黄、洋麻纤维／毛型粘胶纤维混纺仿毛地毯纱的研制工艺，并对黄、洋麻纤维的碱处理改性进行了探讨。     

Selectivity of CC Traps in Catching Green Leafhoppers and Thrips

在中国广西南宁,测定８种不同基座颜色的ＣＣ诱捕器对豇豆（ＶｉｇｎａｓｅｓｑｕｉｐｅｄａｌｉｓＷｒｉｇｈｔ）上的叶蝉、蓟马的诱捕作用。蓝色基座诱捕器对华筒管蓟马（ＨａｐｌｏｔｈｒｉｐｓｃｈｉｎｅｎｓｉｓＰｒｉｅｓｎｅｓ）的诱集量为白色基座诱捕器的２倍（２２．８头／诱捕器天）,其他基座颜色诱捕器的诱捕量为０．１～１．７头／诱捕器天。ＣＣ诱捕器对叶蝉（Ｅｍｐｏａｓｃａｓｐｐ．）的诱集量为４头／诱捕器天,不同基座颜色诱捕器的诱集量差异不显著。在印度,测定白色、黄色和绿色基座诱捕器对花生上两种蓟马的诱捕作用。白色基座诱捕器对茶黄蓟马（ＳｃｉｒｔｏｔｈｒｉｐｓｄｏｒｓａｌｉｓＨｏｏｄ）的诱集量为３９．８头／诱捕器天,为黄色基座诱捕器的２倍多。绿色基座诱捕器的诱集量最少。白色基座诱捕器对瓜蓟马（ＴｈｒｉｐｓｐａｌｍｉＫａｒｎｙ）的诱捕量（１７．３头／诱捕器天）也显著高于黄色基座诱捕器（１１．０头／诱捕器天）。结论为：白色和蓝色基座诱捕器可用于监测豇豆、花生上蓟马的种群数量。     

西昌市大棚蔬菜白粉虱的发生与防治

本文主要介绍白粉虱在西昌市大棚蔬菜蕃茄、黄瓜、豆类上的发生情况和特点,对白粉虱的防治进行了天敌和药剂试验,筛选出科学合理的综合防治措施。     

两种烟粉虱寄生蜂的雌性生殖系统结构与卵巢发育特点

 通过对烟粉虱Bemisia tabaci Gennadius 的两种优势寄生蜂浅黄恩蚜小蜂Encarsia sophia Girault & Dodd 和海氏桨角蚜小蜂Eretmocerus hayati Zolnerowich & Rose 的生殖系统结构与卵巢发育特点的研究,明确了影响两种寄生蜂不同寄主处理行为的生理机制。两种寄生蜂雌性生殖系统各包括1 对卵巢、1 对侧输卵管、中输卵管、受精囊、产卵管和产卵鞘。浅黄恩蚜小蜂的产卵器细长笔直较锋利,海氏桨角蚜小蜂产卵器扁平且尖端向上弯曲,这与两种寄生蜂不同的产卵机制相吻合。浅黄恩蚜小蜂和海氏桨角蚜小蜂雌蜂初羽化时体内成熟卵子数量存在明显差异,但随着时间的推移和营养的补充,两种寄生蜂卵巢内成熟卵子的数量都会显著增加。两种寄生蜂均为卵育型寄生蜂。     

温室白粉虱对植物的喜好性

回顾并总结了温室白粉虱对植物喜食性的没探讨方式。试验可以提示粉虱在不同种植物或植物不同组成部分上的数量分布。行为研究可以揭示刺探及吸食占的时间比例。行为研究与形成学研究相结合可以区分刺探与吸食这２个过程。还讨论了粉虱择食的链式过程。     

保护地蔬菜主要病虫害的药剂防治技术

黄瓜霜霉病、番茄灰霉病和温室白粉虱等是保护地蔬菜栽培中主要发生的病虫害,具有危害损失大和防治难的特点.对这3种病虫害的药剂防治技术的研究结果表明,72%克露WP、72%霜脲·锰锌WP和72.2%普力克水剂对黄瓜霜霉病,40%嘧霉胺SC、40%施佳乐SC和50%多·霉威WP对番茄灰霉病均有较好的效果;但部分药剂如75%百菌清WP对黄瓜霜霉病、50%多菌灵WP和50%速克灵WP对番茄灰霉病等已产生抗药性.70%阿克泰WG和10%吡虫啉WP采用喷雾和灌根防治温室白粉虱均有较好防效.     

不同颜色CC诱捕器对叶蝉和蓟马的诱捕作用

在中国广西南宁,测定8种不同基座颜色的CC诱捕器对豇豆(Vig na sesquipedalis Wright)上的叶蝉、蓟马的诱捕作用.蓝色基座诱捕器对华筒管蓟马(Haplothrips chinensis Priesnes)的诱集量为白色基座诱捕器的2倍(22.8头/诱捕器.天), 其他基座颜色诱捕器的诱捕量为 0.1～1.7头/诱捕器.天.CC诱捕器对叶蝉(Empoasca spp.)的诱集量为4头/诱捕器.天,不同基座颜色诱捕器的诱集量差异不显著.在印度,测定白色、黄色和绿色基座诱捕器对花生上两种蓟马的诱捕作用.白色基座诱捕器对茶黄蓟马(Scirtothrips dorsalis Hood)的诱集量为39.8头/诱捕器.天,为黄色基座诱捕器的2倍多.绿色基座诱捕器的诱集量最少.白色基座诱捕器对瓜蓟马(Thrips palmi Karny)的诱捕量(17.3头/诱捕器.天)也显著高于黄色基座诱捕器(1 1.0头/诱捕器.天).结论为:白色和蓝色基座诱捕器可用于监测豇豆、花生上蓟马的种群数量.     

New species of Eretmocerus Haldeman (Hymenoptera: Aphelinidae) parasitizing Crenidorsum turpiniae (Takahashi) and Aleurothrixus floccosus (Maskell) (Hemiptera: Aleyrodidae) from Taiwan

A key to females of 11 Eretmocerus species occurring in Taiwan is provided. Two new species, E. tongxiaoensis Shih & Polaszek, sp. nov. and E. lannae Shih & Polaszek, sp. nov. found infesting Crenidorsum turpiniae (Takahashi) and Aleurothrixus floccosus (Maskell) respectively, are described. Five more Eretmocerus species are recorded here as new to Taiwan: E. bisetae Hayat, E. flavus Krishnan & David, E. queenslandensis Naumann & Schmidt, E. rui Zolnerowich & Rose and E. trialeurodis Hayat. New host records for four of these Eretmocerus species from five whitefly species are presented. The whitefly Aleurothrixus floccosus (Maskell) is recorded for the first time from Taiwan.     

Discovery of a predaceous drosophilid Acletoxenus indicus Malloch in South China,with descriptions of the taxonomic,ecological and molecular characters (Diptera: Drosophilidae)

A drosophilid, Acletoxenus indicus Malloch, with larvae preying on Aleurodicus dispersus and Aleurocanthus sp. (Hemiptera: Aleyrodidae), is discovered from Guangdong and Hainan Provinces, China, and its morphological, ecological and molecular characters are described.