4种步甲属昆虫一龄幼虫形态学特征

采用Bousquet等创立的幼虫原生刚毛标记分类法对步甲属Carabus L.切鞘步甲亚属Apotomopterus Hope中的普通步甲南岭亚种Carabus(A.)sauteri nanlingensis Deuve et Tian、舜步甲南岭亚种C.(A.)shun floridus Cavazzutiet Ratti、石坑崆步甲C.(A.)shikengkong Deuve et Tian和阿氏步甲粤北亚种C.(A.)arrowi yubeicus Deuve et Tian的一龄幼虫形态特征进行了描述,并编制了这4种步甲一龄幼虫的分类检索表.     

中国步甲属（鞘翅目：步甲科）物种多样性及其保护问题

步甲属是步甲科昆虫中的一个大属,其以体形大(相对于步甲科昆虫)、体态优美、色彩艳丽而著称。步甲属昆虫多生活于森林中,以蚯蚓、蜗牛等为食,与环境关系密切,在作为生物多样性指示物方面有一定的应用前景。我国步甲属种类非常丰富,且特有成份高。目前已知约410种,其中特有种为324种,占79．02％;在分布于我国的46个亚属中,18个为特有亚属,特有率为39．1％。本文在分析中国步甲属物种多样性及其特点的基础上,对这一类群的研究和保护问题提出了建议。     

贵州省黔西南步甲属昆虫种类记述

通过对兴义、安龙和贞丰等地的野外调查,共发现4种步甲属(Carabus L.)昆虫,即安龙步甲C. (Apotomopterus) an longensis Deuveet Tian、仙鹤步甲C. (A.) xianhensis Deuve et Tian、口安坪步甲C. (A.) kouanping Maindron和湘步甲黔西南亚种C. (Isiocarabus) hunanicola qianxinanus Deuve et Tian。其中,安龙步甲、仙鹤步甲和湘步甲黔西南亚种均为安龙县仙鹤坪自然保护区特有种类(亚种)。并对4种步甲形态特征进行了简要描述。     

河北省小五台山自然保护区步甲属昆虫(鞘翅目:步甲科)

河北省小五台山国家级自然保护区是太行山区北段一个重要的自然保护区．本文简要记述了该保护区步甲科步甲属昆虫共5种,即：脊步甲Carabus（Aulonocarabus）canaliculatus Adams、刻步甲C（Pagocarabus）crassesculptus Kraatz、拉特氏步甲C.（Morphocarabus）latreillei Fischer、弗氏步甲C．（Oreocarabus）vladimirskyi Dejean和纹鞘步甲C.（Scambocarabus）sculptipennis Chaudoir．其中,后3种为该保护区首次记录．     

山西庞泉沟自然保护区步甲种类研究

2005年和2006年6~8月,在山西庞泉沟国家自然保护区,主要利用巴氏罐诱法,并结合网筛、扫网等采集方法对步甲科昆虫进行了调查研究,结果表明:⑴获得步甲标本1 343号,隶属10属23种,其中Chlaeniuspallipes、Pterostichus gebleri、P. chinensis为优势种,占总数的63.51%,与Carabus crassesculptus、C. manifes-tus一起构成本地区的常见种;⑵本研究采集了18种步甲是保护区以前没有记载的。⑶将该地区与北京东灵山地区(115°24'~115°36'E,39°48'~40°02'N,)步甲属物种变化及区系类似度比较,j=0.33,两地区步甲优势种一样,但常见特色种不同,前者与后者步甲属区系类似度为中等不相似。     

红裙步甲化学防御初探

本文以红裙步甲作为实验昆虫，初步探究昆虫的化学防御行为。通过解剖，发现红裙步甲的防御腺结构由分泌腺、贮液囊、反应室和输出管组成，而且雌雄虫存在着差异。用二氯甲烷作为萃取剂，采用气相色谱-质谱（GC-MS）分析其化学防御物质成分，获得21个峰，检测出18种化学成分，结果发现，防御物质主要成分是甲基丙烯酸和2-甲基-2-丁烯酸。     

丽步甲陕西亚种(Carabus formosus nili)的形态特征及生物学特性

记述了丽步甲陕西亚种Carabus formosus nili各虫态的形态特征、生物学特性。在陕西杨凌地区,该虫1年发生2代,以成虫在土壤中越冬。成虫在5月上旬至10月下旬活动,分别于5月下旬至6月中旬及8月下旬至9月中旬产卵。卵期7~9 d;幼虫2龄,历期分别为4~6 d,14~18 d;预蛹期16~19 d;蛹期7~10 d。成虫以蜗牛、蛞蝓、蚯蚓及多种鳞翅目幼虫为食,幼虫主要以蜗牛为食。     

安龙步甲的生物学特性观察

对安龙步甲的生物学特性进行了观察。结果表明,安龙步甲在贵州1年发生1代,以成虫在3．0—15．0cm的土中越冬。4月下旬开始出土活动,出土活动高峰在5～6月,6月上旬始见幼虫,幼虫盛发期在6-9月。成虫夜间活动,白天潜藏在3．0-5．0cm土中,适宜活动温度20～32℃。湿度在60．0％～90．0％有利于其生长、发育、取食和繁殖。恒温下测得其全世代发育起点温度为14．66℃,有效积温为636．30日度。土壤含水量在5．0％-15．0％适宜羽化。     

Differences in abundance,species richness,and body size of ground beetles (Coleoptera: Carabidae) between beech (Fagus sylvatica L.) forests on Podzol and Cambisol

Ten forest sites with a tree layer of almost pure beech in southern-central Scania, south Sweden, were studied. They were all located in the interior of large forest stands. Five of the stands were developed on mor Podzols with scanty or almost no ground layer vegetation. The other five sites were located on mull Cambisols with a rich ground layer of many vascular plant species and a shrub layer of varying density. In total, 42 carabid beetle species and 9260 individuals were captured with pitfall traps (15 per site, diameter 87 mm) during 12 weeks in April, July and September 2007. Composition of the carabid fauna differed considerably between the two types of sites. In the Cambisol sites 39 carabid species were found, compared to only 21 species in the Cambisol sites. Mean carabid species richness per site differed significantly between Cambisol and Podzol sites (n = 20.4 and 13.2, respectively). The difference was wholly due to a lower number of small carabid species (mean body length <12 mm) in the Podzol sites. Of four variables (pH-KCl, Clay, Organic matter, and Sum of plant cover percentages below tree canopy) the sum of plant cover variable usually accounted for more (>50%) of the carabid beetle variability compared to the three other variables. Carabus glabratus and Pterostichus oblongopunctatus were almost exclusively found on Podzol. Carabus coriaceus, Pterostichus melanarius and in particular Carabus nemoralis were more abundant on Cambisol, whereas Carabus hortensis and Pterostichus niger were almost ubiquitous and attained the highest total numbers. There was no significant difference between Podzol and Cambisol sites in the total number of carabid individuals captured. C. coriaceus, C. hortensis, and Carabus violaceus, species that were abundant enough in all sites for a comparison, had significantly larger mean body sizes in the Podzol than in the Cambisol sites, a finding valid for both sexes. There were more males than females of C. coriaceus, C. violaceus, and C. nemoralis in the catches, whereas sex distribution of C. hortensis was equal. Possible explanations for the findings are differences in microclimate and food web characteristics related to differences between Podzols and Cambisols in understorey vegetation and soil or litter properties.