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记述了采自黑龙江省帽儿山的天蛾科黑龙江省一新记录种——洋槐天蛾Clanis deucalion(Walker)成虫的形态特征,介绍了其寄主、分布及标本信息,并附有成虫照片。 相似文献
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【目的】对天蛾科10种成虫的前翅进行几何形态测量学分析,探讨利用几何形态测量学实现天蛾科成虫数字化分类的可行性,为逐步实现蛾类昆虫的数字化分类提供新的形态学依据。【方法】首先,进行几何形态测量学分析:以天蛾右前翅为研究对象,按特定次序选取17个翅脉交点作为标记点,并获得坐标数据;对原始标记点坐标数据进行普氏叠加分析消除标本摆放位置、方向和大小等非形状因素等信息;对普氏叠加后的标记点数据进行相对扭曲分析,得到17个标记点对10种天蛾分类作用的大小。其次,对几何形态测量学分析所得数据进行多元统计分析:利用单因素方差分析对17个标记点的差异显著性进行检验,再对普氏叠加后的标记点数据进行主成分分析,然后利用前3个主成分进行判别分析。【结果】相对扭曲分析表明标记点2、4和5对于10种天蛾成虫的分类作用相对较大;单因素方差分析显示17个标记点均具有显著的差异,即标记点在种间是有显著差异的,可以用于本文10种天蛾成虫的分类鉴定;主成分分析的前3个主成分的累计贡献率为97.7%,可作为对10种天蛾成虫进行分类鉴定的变量;判别分析结果显示回归判别和交叉判别的准确率均为100%,实现对天蛾科10种成虫的分类鉴定。【结论】研究表明几何形态测量学可应用于天蛾成虫的数字化分类鉴定,可为未来进一步实现蛾类成虫的自动识别奠定基础。 相似文献
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天蛾属于鳞翅目天蛾科,是一种大型的农林害虫。成虫行动活泼,飞翔迅速,身体粗壮,未端尖削。触角中部加粗,未端弯曲成钩状。像发达。翅大而狭。卵多数卧式,椭圆型。幼虫大而粗壮,圆柱型,光滑,腹部8节常有1个尾状突起叫尾角。静止时常将身体前面部分高举起。蛹通常光滑,发亮,红褐色,化蛹在土中。目前,世界已有天蛾种类1000余种,我国记载的有130种。对于我省的天蛾科种类,至今尚未有人调查。笔者自1978-1997年,结合本地区森林昆虫调查,以及全省森林昆虫普查工作,着重地对我省分布的天蛾种类进行了采集、饲养及观察。30多年来… 相似文献
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一、分布与危害雀纹双线天蛾,鳞翅目,天蛾科。北起黑龙江,南至广东、广西,西到陕西、四川,东低沿海各省及台湾均有发生。危害葡萄、芋、爬山虎、绣球、白粉藤、虎耳草等。幼虫咀食叶片,造成叶片残缺不全,4~5龄幼虫为暴食期,能将叶片吃光,仅留叶柄和叶脉,影响植物生长和观赏。二、形态特征1.成虫 相似文献
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大背天蛾生物学特性的观察 总被引:1,自引:0,他引:1
大背天蛾Meganoton andlis在浙江丽水地区一年发生3代,蛹越冬。大背天蛾卵和幼虫-蛹期寄生性天敌种类较多,能有效地抑制它的虫口数量。幼虫取食期以氧化乐果或甲胺磷喷洒或注干防治效果在90%以上。 相似文献
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Halil Kutuk Ramazan Canhilal Mahmut Islamoglu Ali Duran Kanat Moustafa El-Bouhssini 《Journal of pest science》2010,83(1):21-25
The present study evaluated the effect of overwintered adult density and egg and adult parasitism rates on the new-generation
population densities of the Sunn Pest (Eurygaster integriceps Put.) under field conditions. We quantified the abundance of overwintered adult densities and egg and adult parasitism rates
in 20 one-ha unsprayed wheat fields in southeastern Turkey to assess their impact on nymphal instars, plus new-generation
adult densities. The number of overwintered adults per square meter and the percent of egg parasitism rates were positively
and negatively correlated with new-generation densities of the Sunn Pest, respectively. The results of multiple regression
analysis produced the equation Y = 15.037 + 8.287 OW (overwintered adult) − 0.235 egg PR (parasitism rate). The findings suggest that the egg parasitoids
may suppress nymphal instars plus new-generation adult densities of the Sunn Pest. The findings also suggest that the present
formula can be used to determine the spraying areas in which densities reach economic threshold for the integrated Sunn Pest
management program in wheat fields in Turkey. 相似文献
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Juvenile and adult leaves of the heteroblastic species Eucalyptus globulus Labill. ssp. globulus did not show active diurnal orientation toward or away from incident radiation. Juvenile leaves of a late-maturing sapling of a Tasmanian provenance were evenly distributed in all azimuth sectors. In contrast, an early-maturing sapling of the same age from Wilsons Promontory, Victoria had a predominance of adult leaf blades facing east and west. Mid-vein and blade angles of juvenile and adult leaves were non-random with an overall vertical declination of the leaves. Both leaf types intercepted a greater irradiance during the morning than at midday. Sub-horizontal juvenile leaves intercepted 22% more irradiance than vertical adult leaves during the middle of the day. The amphistomatal and isobilateral adult leaves intercepted sunlight equally on both leaf surfaces. Stomatal conductance was variable during the period of measurement but was similar for the Tasmanian juvenile (0.4 to 0.9 cm s(-1)) leaves and Wilsons Promontory adult (0.5 to 1.2 cm s(-1)) leaves. Greater light interception by the sub-horizontal juvenile leaves would confer a growth advantage to saplings and regenerating canopies. Reduced light interception and leaf temperature of vertical adult E. globulus leaves would assist in water conservation, particularly at high solar angles. 相似文献
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性信息素引诱监测预报马尾松毛虫试验 总被引:3,自引:0,他引:3
采用人工合成的性信息素橡胶诱芯和船形诱捕器对马尾松毛虫成虫进行林间诱捕和幼虫虫口密度监测试验,结果表明:幼虫低虫口密度、成虫低诱捕量时(幼虫虫口密度100条/株以下,成虫诱捕量在65只以下),成虫诱捕量与幼虫虫口密度有较明显的相关性,可以用模拟的幂函数In(T)=2.278×1n(p)-2.521进行监测预报;幼虫高密... 相似文献
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松褐天牛(Monochamus alternatus)成虫补充营养取食研究 总被引:4,自引:0,他引:4
连续2年对松褐天牛成虫进行饲养试验,对松材线虫病树侧枝的成虫进行取食痕调查,结果表明,成虫的平均取食量162mm2·头-1·d-1,♀♂性别间无显著性差异;取食量自初始取食至性成熟逐日增加,至产卵期达最大食量,并保持这一水平上下波动;成虫取食对树种和枝龄都有明显的选择性;对本试验供试树种的选择性顺序是火炬松>马尾松>雪松>黑松>湿地松>金钱松;对枝龄的农食选择性表现为在5月下旬前当年新枝不是主要的取食枝,至5月底才明显主要取食当年生枝。在松材线虫病树上成虫的取食痕数和面积的枝龄分布很分散,自当年新枝至13年生枝都能被取食。 相似文献
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Tenninal mucro of adult female was the distinct character between Bursaphelenchus xylophilus (Bx) and its allied species Bursaphe/enchus mucronatus (Bb). In general, Bx had no mucro. But it could have mucro in some situations. In the test, Bx without mucro was inoculated on Chineses pine (Pinus tabulaeformis) and Japanese black pine (Pinus thunbergii). The results showed that 85% of adult females Bx isolated from Chinese pine had terminal mucro. On Japanese black pine only 4.2% of adult females Bx had terminal mucro. Bx with terminal mucro from Chinese pine was re-inoculated on the fungus, Pestalotia sp. and Japanese black pine. It was found that 100% adult females had no terminal mucro on the fungus and 3.4% with terminal mucro on Japanese black pine. 相似文献