中国二叉蚜属研究及三新种记述(同翅目：蚜科)

本文记述中国二叉蚜属Schizaphis Borner 6种,其中包括3新种：贴梗海棠二叉蚜Schizaphis(Schizaphis)chaenometicola Zhang,sp.nov.,香草二叉蚜Schizaphis(Schizaphis)hierochlophaga Zhanget Chen,sp.nov.和长管二叉蚜Schizaphis(Schizaphis)longituberclata Zhang et Qiao,sp.nov.,并附亚属、种检索表。模式标本存放中国科学院动物研究所标本馆。     

Use of a mitochondrial COI sequence to identify species of the subtribe Aphidina (Hemiptera, Aphididae)

Aphids of the subtribe Aphidina are found mainly in the North Temperate Zone. The relative lack of diagnostic morphological characteristics has hindered the identification of species in this group. However, DNA-based taxonomic methods can clarify species relationships within this group. Sequence variation in a partial segment of the mitochondrial COI gene was highly effective for identifying species within Aphidina. Thirty-six species of Aphidina were identified in a neighbor-joining tree. Mean intraspecific sequence divergence in Aphidina was 0.52%, with a range of 0.00% to 2.95%, and the divergences of most species were less than 1%. Mean interspecific divergence within previously recognized genera or morphologically similar species groups was 6.80%, with a range of 0.68% to 11.40%, with variation mainly in the range of 3.50% to 8.00%. Possible reasons for anomalous levels of mean nucleotide divergence within or between some taxa are discussed.     

Cornicle length in Macrosiphini aphids: a comparison of ecological traits

Abstract 1. Aphids often emit cornicle droplets when attacked by predators. While the function of cornicle droplets has long been debated (i.e. mechanical protection vs. chemical signalling), it is not understood why aphid species have cornicles of different lengths.
2. It was hypothesised that aphids living in more scattered colonies have longer cornicles to scent-mark predators with cornicle droplets containing alarm pheromone, so that clone-mates are provided with advanced warning of a threat, even if not at the predation site. To test this hypothesis, multiple regression analyses were used, due to a lack of phylogenetic information on these taxa, to address which ecological traits (amount of wax on an aphid, degree of colony aggregation, feeding shelter, ant attendance) are correlated with cornicle length.
3. Aphids living in dense colonies tended to have shorter cornicles than aphids living in more scattered colonies. Also, aphids with more protection (i.e. wax) on their bodies had shorter cornicles. Aphids also tended to have shorter cornicles when tended by ants. The presence of a feeding shelter was not a good predictor of cornicle length.
4. It is suggested that longer cornicles function to scent-mark predators with alarm pheromone to increase the inclusive fitness of a clone; however the negative correlation between the amount of individual protection, and also ant attendance, and cornicle length argues for a trade-off between different forms of defence.     

中国二叉蚜属研究及三新种记述 (同翅目:蚜科)(英)

本文记述中国二叉蚜属SchizaphisBruer6种,其中包括3新种：贴梗海棠二叉蚜Schizaphis（Schizaphis）chaenometicolaZhang,sp．nov．香草二叉蚜Schizaphis（Schizaphis）hierochlophagaZhangetChen,sp．nov．和长管二叉蚜Schizophis（Schizaphis）longituberclataZhangetQiao,sp．nov,并附亚属、种检索表。模式标本存放中国科学院动物研究所标本馆。贴梗海棠二叉蚜Schizapais（Schizaphis）chaenometicolaZhang,新种（图1）正模：无翅孤雌蚜,No．8101－1－11,甘肃：天水（北纬34．6°,东经105.7°）1580m,贴梗海棠Chaenomelesspeciosa（Sweet）,1985－VII－7,23,张广学、钟铁森;副模：7无翅孤雌蚜,其它同上。该种触角约为体长的0．50～0．70倍,腹管略长于尾片,与香草二叉蚜相近,但腹部各节无缘瘤,中胸腹盆两臂分离,寄主贴梗海棠和山丁子,使其不同于本属内任何种。香草二叉蚜Schizaphis（Schizaphis）hierochlophagaZhangetChen,新种（图2）正模：有翅孤雌蚜,No．Y2690－1－1－3,北京（北纬39．3°,东经116．4°）100m,香茅草Cymbopogonspp,1983－VI－2,张向才。副模：1有翅孤雌蚜,1无翅孤雌蚜,No．Y2690－11－2,其它同上。该种触角约为体长的0．64倍,有翅孤雌蚜触角3～5     

中国蚜科一新纪录属四新纪录种(同翅目,蚜总科)

研究了中国蚜科Aphididae 1新纪录属4新纪录种,包括蚜亚科Aphidinae蚜属Aphis 2新纪录种:番樱桃蚜Aphis eugeniae van der Goot,1917和粉蚜居梨亚种Aphis farinosa yanagicola Matsumura,1917;长管蚜亚科Macrosiphinae 1新纪录属:微小瘤蚜属Micromyzella Eastop,1955;2新纪录种:犹太微小瘤蚜Micromyzella judenkoi (Carver,1965)和香蕉交脉蚜卡拉第亚种Pentalonia nigronervosa caladii van der Goot,1917.提供了形态记述、寄主植物、分布及形态特征图.研究标本保存在英国自然历史博物馆.     

缢管蚜亚族分属检索表及中国一新记录种记述（同翅目：蚜科，蚜亚科）

提供了世界蚜科Aphididae蚜亚科Aphidinae缢管蚜亚族Rhopalosiphina 10个属的检索表。记述一个中国新记录种-超管二叉蚜Schizaphis hypersiphonata Basu, (1969) 1970。研究标本保存在中国科学院动物研究所动物标本馆、伊利诺伊大学Illinois Nature History Survey、美国农业部系统昆虫学实验室标本馆和英国自然历史博物馆。     

中国蚜科一新纪录属--麻黄蚜属(同翅目:蚜科)

报道中国蚜科Aphididae 1新纪录属－麻黄蚜属Ephedraphis Hille Ris Lambers,1959和1新纪录种－麻黄蚜Ephedraphis gobica Szelegiewicz,1963。该蚜虫取食具有重要药用价值和固沙作用的麻黄属Ephedra spp.植物。麻黄蚜在中国采自宁夏回族自治区的盐池县和铜川市,国外分布在蒙古国,文中记述了麻黄蚜无翅孤雌蚜和有支孤雌蚜的形态特征及在中国的地理分布,绘制了形态特征图,研究标本保存在中国科学院动物研究所动物标本馆。     

中国蚜属一新纪录亚属和二新纪录种(半翅目,蚜科)

记述了中国蚜科Aphididae蚜亚科Aphidinae蚜族Aphidini蚜亚族Aphidina蚜属Aphis1新纪录亚属,囊蚜亚属Aphis(Bursaphis)Baker,1934;及2新纪录种,柳叶菜蚜Aphis(Aphis)praeterita Walker,1849和茶藨子囊蚜Aphis(Bursaphis)grossulariae Kaltenbach,1843。提供了中国蚜属分亚属检索表、地理分布与寄主植物信息,绘制了形态特征图。研究标本保存在中国科学院动物研究所国家动物博物馆。     

Phylogeny of the genus Aphis Linnaeus, 1758 (Homoptera: Aphididae) inferred from mitochondrial DNA sequences

Aphis is the largest aphid genus in the world and contains several of the most injurious aphid pests. It is also the most reluctant aphid genus to any comprehensive taxonomic treatment: while most species are easily classified into "species groups" that form well defined entities, numerous species within these groups are difficult to tell apart morphologically and identification keys remain ambiguous and mostly rely on host plant affiliation. In this paper, we used partial sequences of COI/COII and CytB genes to reconstruct the first phylogeny of Aphis and discuss the present systematics. The monophyly of the subgenus Bursaphis and of the tree major species groups, Black aphid, Black backed aphid and frangulae-like species was recovered by all phylogenetic analyses. However our data suggested that the nominal subgenus was not monophyletic. Relationships between major species groups were often ambiguous but "Black" and "Black backed" species groups appeared as sister clades. The most striking result of this study was that our molecular data met the same limits as the morphological characters used in classifications: mitochondrial DNA did not allow the differentiation of species that are difficult to identify. Further, interspecies relationships within groups of species for which taxonomic treatment is difficult stayed unresolved. This suggests that species delineation in the genus Aphis is often ambiguous and that diversification might have been a rapid process.     

中国肖小瘤蚜属(半翅目,蚜科)及二新纪录种

记述了中国蚜科Aphididae蚜亚科Aphidinae长管蚜族Macrosiphini小瘤蚜属Micromyzodium David,1958,描述了中国2新纪录种,水蛇麻真瘤蚜Micromyzodium kuwakusae(Uye,1924)和蓼肖小瘤蚜Micromyzodium polypodii Takahashi,1963。提供了该属中国已知物种检索表、地理分布与寄主植物信息,绘制了形态特征图。研究标本保存在中国科学院动物研究所国家动物博物馆。