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1.
Astegopteryx spinocephala sp. nov., a soldier‐producing aphid species forming banana‐bunch shaped galls on Styrax benzoides in northern Thailand, is described. We found that galls of the species are formed in approximately June and last for almost 1 year, and that the aphid completes its life cycle without migrating to secondary hosts. Many alate sexuparae appeared in March/April, when many sexuals (arostrate males and rostrate females) and eggs were found in live subgalls guarded by soldiers that plugged the ostiole with their sclerotized, spiny heads. Two healthy galls sampled in April contained 2799 and 2659 eggs, respectively. Many live galls were still found in May, and some at the beginning of June. These galls contained both active soldiers and eggs, some of which had already hatched. This indicates that soldiers of A. spinocephala guard eggs until they hatch in at least some galls. 相似文献
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Tuberaphis owadai sp. nov., an aphid species forming coral‐shaped galls on Styrax tonkinensis in northern Vietnam, is described. We found that the species produces many sterile second‐instar soldiers in the gall. The colony size of a large gall was estimated to be 178 000, approximately half of which were soldiers. Alates emerging from galls contained sexual embryos, indicating that the life cycle is monoecious (non‐host‐alternating). Predaceous larvae of the pyralid moth Assara seminivalis were found in several galls. 相似文献
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Shigeyuki Aoki Utako Kurosu Mayako Kutsukake Tsung‐Jui Hsieh Man‐Miao Yang Jae C. Choe Takema Fukatsu 《Entomological Science》2013,16(2):203-221
The aphid Ceratovacuna nekoashi and its allied species have been a taxonomically difficult group. They form peculiar “cat's‐paw” galls (called “Nekoashi” in Japanese) on Styrax trees and also use Microstegium grasses as their secondary hosts. Through sampling aphids from both Styrax galls and Microstegium grasses in South Korea, Japan and Taiwan, and sequencing their DNA, we made it clear that four distinct species occur in these regions: C. nekoashi (Sasaki), C. oplismeni (Takahashi), C. orientalis (Takahashi) and C. subtropicana sp. nov. In Korea, C. nekoashi forms galls on both S. japonicus and S. obassia, whereas in Japan the species forms galls on the former but not on the latter; our molecular analyses unequivocally indicated the occurrence of a single species in South Korea and mainland Japan. Aphids of the four species on the secondary host were morphologically discriminated from one another. The identity of the primary‐ and secondary‐host generations was also clarified for each species. All four species were found to produce second‐instar sterile soldiers in their Styrax galls, and first‐instar soldiers were found in colonies of C. subtropicana on the secondary host. 相似文献
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扁蚜亚科昆虫虫瘿多样性研究(半翅目,蚜科) 总被引:2,自引:0,他引:2
虫瘿是蚜虫诱导植物异速生长的结果,虫瘿作为蚜虫重要的延伸特征,对蚜虫系统分类、系统发育关系、以及起源演化等研究具有非常重要的作用.而且虫瘿的形态结构、着生部位等在蚜虫的物种间存在非常丰富的多样性,是蚜虫重要的生物学特征,也是物种鉴定的重要依据之一.本文在已有标本采集记录和资料的基础上,从结瘿的植物、虫瘿着生部位、形态结构及类型等4个方面对扁蚜亚科虫瘿的多样性进行了系统研究.结果表明该亚科蚜虫大多都在原生寄主上形成虫瘿,个别属及种可在次生寄主上成瘿;虫瘿在类型上有虫瘿和伪虫瘿之别;在着生部位上,有叶片、叶脉、叶柄、小枝、粗枝等;虫瘿的形状也十分多样,有管状、袋状、球状、半球形、刺球状、纺锤形、圆锥形、分支状、香蕉束状等;在结构上既有单室、多室之分,也有开放型、封闭型之别.对于虫瘿多样性的研究,可为虫瘿演化规律的探讨提供重要信息,也是基于虫瘿进行物种鉴定的重要基础. 相似文献
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《Journal of Asia》2021,24(3):564-572
Ceratovacuna atrovirensa Qiao sp.n., a woolly aphid on Indocalamus tessellatus from China, is described and illustrated. The new species is supported by both morphological and molecular data. An updated key to apterous viviparous females of Ceratovacuna is provided. The type specimens are deposited in the National Zoological Museum of China, Institute of Zoology, the Chinese Academy of Sciences, Beijing, China and the Natural History Museum, London, United Kingdom.www.zoobank.org/urn:lsid:zoobank.org:pub:8D012AE4-D4FD-4AF7-B2AC-3CCB22ADE188. 相似文献
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The aphid genus Asiphonipponaphisgen. n. from China is new to science. Asiphonipponaphis vasigallasp. n. causing galls on Distylium chinense from Hunan, China is described and illustrated. Holotype and paratypes are deposited in the National Zoological Museum of China, Institute of Zoology, Chinese Academy of Sciences, Beijing, China (NZMCAS) and Kogakkan University, Japan. 相似文献
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省藤属( Calamus L .) 属棕榈科(Palmae ) 省藤亚科(Calamoideae) , 是棕榈科中最大的属, 约有370种。中国是其天然分布的北缘, 共有37 种26 变种, 种数约占世界的10% , 有西南和东南两大分布中心;省藤属的天然分布地域性较强, 各地区特有种比例较高; 在区系上, 西南分布中心和中南半岛西部、南亚的省藤区系都有较强的联系, 东南分布中心与中南半岛东部的联系更为紧密。 相似文献
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扁蚜亚科(同翅目,扁蚜科)蚜虫地理分布格局初探 总被引:1,自引:2,他引:1
研究了扁蚜亚科Hormaphidinae(同翅目,扁蚜科)蚜虫的地理分布特点和现代分布格局.同时利用蚜虫与寄主植物的协同进化关系,结合古地理和古生物学等方面的资料,探讨了扁蚜亚科现代分布格局形成的可能原因.现代扁蚜亚科间断分布于欧亚大陆(欧洲与东亚)和北美.造成这种现代分布格局的可能原因是地球的构造运动和第四纪冰川共同作用的结果. 相似文献
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省藤属四种植物的核型分析 总被引:1,自引:0,他引:1
报道了省藤属 (Calamus) 4种植物的核型 :小省藤 (C gracilis)的核型公式为 2n =2x =16m 10sm ,盈江省藤 (C nambariensisvar yingjiangensis)为 2n =2x =16m 10sm ,宽刺藤 (C platyacanthus)为 2n =2x =14m 12sm ,高地省藤 (C nambariensisvar alpinus)为 2n =2x =14m 12sm。其体细胞染色体数均为 2n =2 6 ,核型不对称性类型为 2B ,说明其种间染色体核型差异小。但小省藤臂比值大于 2的染色体占 12 % ,而宽刺藤、盈江省藤和高地省藤为 30 % ,说明在系统发育中 ,前者可能更为原始 相似文献
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东京野茉莉种子油营养成分研究 总被引:13,自引:0,他引:13
对东京野茉莉种子的营养成分进行分析,结果表明,其种子含有丰富的营养物质:脂肪油、矿质元素,维生素等,其脂肪油中人体必需的油酸和亚油酸含量达85.4%,具有开发利用价值。 相似文献
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本文描述3种钩叶藤属(Plectocomia)植物茎的后生木质部导管分子,并与省藤属(Calamus)比较分析。钩叶藤属的导管分子大部分具单穿孔板.类似省藤属,但具复穿孔板导管分子的比量和横隔数目以及导管分子长度均比省藤属大.讨论了导管分子特化同两属天然分布植被区的关系。 相似文献
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利用扫描电镜对中国安息香属(Styrax )22种植物花粉形态特征进行观察和分析,其中7种安息香属植物的花粉形态为首次报道。结果显示:(1)22种安息香属植物花粉类型为中型花粉(25~50 μm)和大型花粉(50~100 μm),花粉极面观为三角形或三角圆形,赤道面观为菱形或椭圆形,萌发孔类型为3孔沟型。(2)花粉极轴长度(P)为36.28~55.56 μm,赤道轴长度(E)为16.67~36.72 μm,极轴与赤道轴的比值P/E为1.41~2.18,体积指数$ {sqrt{mathrm{P}times mathrm{E}}} $ 为24.59~45.17,花粉萌发沟长度为26.82~46.87 μm。(3)花粉外壁纹饰分为4类,包括网状纹饰、疣状纹饰、脑纹状纹饰和穴状纹饰。(4)根据聚类分析可将22种安息香属植物分为5个类群。研究结果表明,安息香属植物的花粉形态特征在种间存在差异,可作为种间鉴定及分类的重要依据。 相似文献
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对国产棕榈科省藤属(Calamius L.)15种植物的花粉进行了光学和扫描电镜观察,其中12种为首次报道。省藤属的花粉均为两沟型花粉,外壁覆盖层多为网状纹饰(大喙省藤C.macrorrhynchus)或具穿孔(华南省藤C.rhabdocladus)。首次发现省藤属花粉的外壁纹饰存在穿孔和外壁疣状突起的类型(阔叶鸡藤C.pulchellus)以及皱波状突起的类型(长鞭省藤C.flagellum)。花粉的大小、形状、外壁纹饰、外壁是否有突起,外壁厚度和网状纹饰网眼的大小,对于省藤属的种级分类有较大的意义。 相似文献
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对国产省藤属(Calamus L.)植物17种2变种的叶表皮进行光学显微镜观察,除单叶省藤(C.simplicifolius)、短叶省藤(C.egregiw)和白藤(C.tetradactylus)外,其它种均为首次报道。省藤属植物的叶表皮形态较为一致,气孔器为轮列4细胞型(tetracytic,或称四轮列型),即有4个副卫细胞,其中2个为侧副卫细胞,2个为端副卫细胞;表皮细胞为长方形,纵向排列。表皮毛有3种类型:多细胞排成单列的单毛(人喙省藤C.macrorrhynchus)、多细胞排成2-3列的单毛(毛鳞省藤ethysanolepis等)、多细胞分枝毛(白藤等)。表皮细胞的长度和宽度特征、细胞壁的厚薄及波纹的深浅和形状、端副卫细胞的长短等细微特征在种问存在差异,可以区分种类。叶表皮结构还反映了种问的亲缘关系。因此,叶表皮特征对于省藤属种类的划分和亲缘关系的确定有较大的分类学意义。 相似文献
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LI-YUN JIANG GE-XIA QIA GUANG-XUE ZHANG 《Insect Science》2007,14(4):339-350
The elementary traits and diversity of embryonic setal patterns of 31 species of 22 genera, in three tribes of Hormaphidinae are studied. The embryonic setal patterns to every species are provided. Based on the parsimony principle and the developmental principle, these patterns are analyzed in each tribe following the terminology of Richards (1965). It is suggested that the setal patterns of abdominal tergites are the most important characters in embryonic and adult setal patterns. In conclusion, neoteny is a phylogenetic trend in the Hormaphidinae. Nipponaphidini and Hormaphidini have more typical neoteny in each genus and more diversity in different types of adult viviparous females than Cerataphidini, by showing more frequent and various protopatterns or mesopatterns. 相似文献
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Glasshouse studies were made on honeydew production, adult and nymphal body weight gain, fecundity and size of egg groups of brown planthopper Nilaparvata lugens (Stål) (Homoptera: Delphacidae) (BPH) on CVS TN1, ASD7, Babawee, Mudgo, Rathu-Heenati and Ptb33 rice plants with watering regimes of 10 ml, 20 ml, 30 ml and excess water daily. Honeydew production, weight gain, fecundity and size of egg groups were greatest on TN1, followed by ASD7. BPH did less well on Babawee, Mudgo and Rathu-Heenati and they did worst on Ptb33. Watering regimes greatly affected performance, with significantly less honeydew, less weight gain, lower fecundity and smaller egg groups on plants with 10 ml water daily than on plants with excess water. The 20 ml and 30 ml watering regimes also significantly reduced honeydew production on TN1 and ASD7 and fecundity and weight gain of adults and nymphs on Mudgo. On Babawee adults gained most weight on the 20 ml and 30 ml treatments, and nymphs gained most weight on the 30 ml treatment. BPH laid most eggs on TN1, ASD7, Babawee and Rathu-Heenati when plants were given 30 ml water daily. 相似文献
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