中国蛱蝶科一新记录种（鳞翅目：蛱蝶科）

首次报道了中国西藏地区肃蛱蝶属一新纪录种：竹肃蛱蝶 Sumalia zulema （Doubleday & Hewitson）,简要描述了该种的形态特征,并提供了雄虫成虫图片和雄性外生殖器图.     

四川省宜宾市近郊鳞翅目昆虫调查初报

2009年3月至2011年3月,对宜宾市的鳞翅目Lepidoptera昆虫进行了采集调查,共采集标本2458号,共鉴定出171种,隶属于22科126属。编目出宜宾市鳞翅目昆虫调查初步名录。     

雾灵山自然保护区鳞翅目昆虫调查研究

调查了雾灵山自然保护区鳞翅目昆虫的种类组成并编制了昆虫名录。结果显示,该区共有鳞翅目昆虫25科237属346种,其中蛾类中夜蛾科、舟蛾科、尺蛾科和天蛾科较多,蝶类中蛱蝶科最多。     

大兴安岭冷杉害虫一新记录种---冷杉芽小卷蛾 (鳞翅目:卷蛾科)

本文报道了黑龙江省大兴安岭危害冷杉的新小卷蛾族一新记录种——冷杉芽小卷蛾Cymolomia hartigiana(Saxesen,1840)(Lepidoptera：Tortricidae)的形态学特征并附图,同时还简要记述了其为害和生物学特性。图6参6     

Comparison of anti-feedant and insecticidal activity of nimbin and salannin photo-oxidation products with neem (Azadirachta indica) limonoids

Photo-oxidation of the neem limonoids nimbin and salannin with UV light in the presence of oxygen gives two isomeric lactone products per limonoid, nimbinolide and isonimbinolide, and salanninolide and isosalanninolide, respectively. When compared in insect tests with the important limonoids of neem seeds, azadirachtin, nimbin and salannin, isonimbinolide and isosalanninolide show activity greater than that of nimbin or salannin and in some respects show activity approaching that of azadirachtin. The photo-oxidation products were tested for anti-feedant activity and toxicity against larvae of three species of Lepidoptera, Spodoptera littoralis (Boisd), Spodoptera frugiperda (FE Smith) and Helicoverpa armigera (Hübner) and nymphs of the locusts Schistocerca gregaria (Forsk?l) and Locusta migratoria (L).     

Effects of various concentrations ofBacillus thuringiensis-corn leaf material on food utilization byChilo partellus larvae of different ages

When herbivores feed on insect-resistant transgenic plants, food consumption and utilization are probably affected. Quantifying these parameters is of importance, because they may be associated with the performance of parasitoids, which are important antagonists of herbivorous pests. In this study, relative consumption rate (RCR), relative growth rate (RGR), approximate digestibility (AD), efficiency of conversion of digested food into body matter (ECD) and efficiency of conversion of ingested food into body matter (ECI) ofChilo partellus Swinhoe larvae (Lepidoptera: Crambidae) exposed to different concentrations of transgenic insect-resistantBacillus thuringiensis-corn (Bt-corn) tissue suspension, were investigated under laboratory conditions. For the control groups, different concentrations of control corn tissue suspension were used. In order to determine whether Bt effects were influenced by larval age, 4- and 17-day-old larvae were used. At all concentrations and for larvae of both ages, RGR, RCR, ECD and ECI values in the control were significantly higher than in the Bt group. Moreover, there was a gradual decrease in RCR, RGR and ECI values when Bt concentrations were increased. However, AD values at the lowest Bt concentration were significantly higher than in the control, whereas no significant differences between both groups could be detected at higher concentrations. In conclusion, the experiments showed that nutritional indices of herbivores exposed to transgenic insect-resistant plants could be quantified to determine the effects of these plants on target or non-target organisms. This could be one component in future evaluation of the effect of transgenic insect-resistant plants on the second and third trophic level. http://www.phytoparasitica.org posting Aug. 28, 2005.     

Sampling strategies and density–defoliation relationships for the pale-winged gray moth, Iridopsis ephyraria, on mature eastern hemlock

The pale-winged gray moth, Iridopsis ephyraria (Walker), a native geometrid moth species found across eastern North America, has recently caused severe defoliation of eastern hemlock trees, Tsuga canadensis (L.) Carrière, in south-central Nova Scotia, Canada. Field studies were carried out to develop sampling techniques that could be used to predict subsequent defoliation of mature hemlocks, which are too large to sample by conventional methods. Densities of newly emerged, first-instar larvae, estimated by sticky tape traps, explained 77% of the subsequent current-year shoot defoliation by I. ephyraria. Egg densities from foam oviposition traps and mid-instar larval densities from beating sheets were weakly and usually non-significantly related to defoliation. Therefore, foam oviposition traps could be used to qualitatively estimate egg densities of I. ephyraria, but first-instar larvae must be sampled with sticky tape if accurate predictions of hemlock defoliation are desired.     

Rove beetles (Coleoptera Staphylinidae) – Their abundance and competition with other predatory groups in Bt maize expressing Cry34Ab1, Cry35Ab1, Cry1F and CP4 EPSPS proteins

This study investigated the effects of different GM maize crops on the abundances of rove beetles. It also investigated competition between rove beetles and other epigeic arthropod predatory groups (ground beetles and spiders). Altogether a total of 5926 rove beetle individuals belonging to 25 species were collected. Whilst the average number of rove beetle individuals per replicate per sampling date varied and, moreover, decreased each year, there were no observed differences in rove beetle abundance when compared between isogenic and GM maize plots within the study period. Furthermore, no clear trends on positive correlations between weed coverage and rove beetle abundances were detected. Altogether a total number of 76,070 ground beetle individuals and 11,126 spiders (including all Araneae) were collected with pitfall traps. Analyses revealed a strong negative relationship between rove beetles and the other two groups in each treatment and year. According to the results the effect of interspecific competition on rove beetle abundance in GM maize is much higher than the effects of treatments including both Bt toxins and extra glyphosate applications.