Specificity of extrafloral nectar induction by herbivores differs among native and invasive populations of tallow tree

Background and Aims

Invasive plants can be released from specialist herbivores and encounter novel generalists in their introduced ranges, leading to variation in defence among native and invasive populations. However, few studies have examined how constitutive and induced indirect defences change during plant invasion, especially during the juvenile stage.

Methods

Constitutive extrafloral nectar (EFN) production of native and invasive populations of juvenile tallow tree (Triadica sebifera) were compared, and leaf clipping, and damage by a native specialist (Noctuid) and two native generalist caterpillars (Noctuid and Limacodid) were used to examine inducible EFN production.

Key results

Plants from introduced populations had more leaves producing constitutive EFN than did native populations, but the content of soluble solids of EFN did not differ. Herbivores induced EFN production more than simulated herbivory. The specialist (Noctuid) induced more EFN than either generalist for native populations. The content of soluble solids in EFN was higher (2·1 times), with the specialist vs. the generalists causing the stronger response for native populations, but the specialist response was always comparable with the generalist responses for invasive populations.

Conclusions

These results suggest that constitutive and induced indirect defences are retained in juvenile plants of invasive populations even during plant establishment, perhaps due to generalist herbivory in the introduced range. However, responses specific to a specialist herbivore may be reduced in the introduced range where specialists are absent. This decreased defence may benefit specialist insects that are introduced for classical biological control of invasive plants.     

中国眉刺蛾属分类研究（鳞翅目：刺蛾科）

系统整理了中国眉刺蛾属的全部种类,共9种及1亚种,包括1新种--黄眉刺蛾Narosa pseudopropolia Wu et Fang及1新纪录种--齐眉刺蛾N. propolia Hampson。编制了本属中国已知种的检索表,提供了成虫和外生殖器特征照片。新种模式标本保存在中国科学院动物研究所。     

中国刺蛾科六新种和十二新纪录种(鳞翅目,斑蛾总科)(英文)

报道中国刺蛾科6新种、5新纪录属及12新纪录种。新种包括:岔颚凯刺蛾Caissa staurognatha sp.nov.、叉颚银纹刺蛾Miresa dicrognatha sp.nov.、透翅泥刺蛾Limacolasia hyalodesa sp.nov.、北京岐刺蛾Austrapoda beijingensis sp.nov.、索洛绿刺蛾Parasa solovyevi sp.nov.及黑条刺蛾Striogyia obatera sp.nov.。条刺蛾属Striogyia Holloway、佳刺蛾属Euphlyctinides Hering、温刺蛾属Prapata Holloway、裔刺蛾属Hindothosea Holloway和白刺蛾属Pseudaltha Hering为我国新纪录属。黑基客刺蛾Ceratonema nigribasale Hering、拟焰刺蛾Pseudiragoides spadix Solovyevet Witt、铜翅佳刺蛾Euphlyctinides aeneola Solovyev、叶奇刺蛾Matsumurides lola(Swinhoe)、温刺蛾Prapata bisinuosa Holloway、黑温刺蛾Prapata scotopepla(Hampson)、赭背刺蛾Belippa ochreata Yoshimoto、裔刺蛾Hindothosea cervina(Moore)、纷刺蛾Griseothosea cruda(Walker)、白翅姹剌蛾Chalcocelis albor Solovyev et Witt、维绒刺蛾Phocoderma witti Solovyev和沙坝白刺蛾Pseudaltha sapa Solovyev为中国新纪录种。模式标本保存在中国科学院动物研究所国家动物博物馆昆虫标本馆(IZCAS)。     

中国绿刺蛾属的新种和新纪录种(鳞翅目,刺蛾科)

记述中国绿刺蛾属Parasa Moore 2新种:镇雄绿刺蛾P.zhenxiongica sp.nov.和西藏绿刺蛾P.xizangensis sp.nov.及3中国新纪录种:同宗绿刺蛾P.gentiles(Snellen)、缅媚绿刺蛾P.kalawensis Orhant和榴绿刺蛾P.punica (Herrich-Schaffer).另外,对中国绿刺蛾P.sinica Moore、双齿绿刺蛾P.hilarata(Staudinger)和青绿刺蛾P.hilarula (Staudinger)的混淆与误定进行了更正.提供了它们的成虫彩色照片和新种的外生殖器特征图.模式标本保存在中国科学院动物研究所.     

中国奕刺蛾属与焰刺蛾属分类研究

属名Iragoides Hering长期被视为Phlossa Walker的同物异名,两者全世界已知12种。通过解剖我国已有的种类,发现它们的外生殖器结构并不相同,两个属的模式种各代表一个类型,因此,本文复用Iragoides Hering为有效名。奕刺蛾属Phlossa的雄性外生殖器具有刺蛾科的典型结构; 雌性外生殖器的囊导管端部多少有些呈螺旋状,囊突1枚呈新月形。奕焰刺蛾属Iragoides的雄性外生殖器在阳茎端基环两侧有膜质小突起或尾端有微刺突; 雌性外生殖器有相连的2枚囊突,囊突上有许多微齿突。共整理出中国奕刺蛾属Phlossa 4种、焰刺蛾属Iragoides 5种,后者包括1新种--线焰刺蛾I. lineofusca Wu et Fang, 及1新记录种--别焰刺蛾I. elongate Hering。编制了两个属已知种的检索表,提供了成虫彩色照片和外生殖器特征图。模式标本保存在中国科学院动物研究所。     

中国扁刺蛾属分类研究(鳞翅目,刺蛾科)

整理出中国扁刺蛾属12种,其中玛扁刺蛾Th.magna Hering、祺扁刺蛾Th.cheesmanae Holloway、泰扁刺蛾Th.siamica Holloway、叉瓣扁刺蛾Th.styx Holloway、明脉扁刺蛾Th.sythoffi Snellen及棕扁刺蛾Th.vetusinua Holloway为中国新纪录种。将Quasithosea Holloway,1987作为扁刺蛾属Thosea Walker,1855的同物异名处理,编制了中国已知种检索表,提供了新纪录种的彩色照片及外生殖器解剖图。     

A review of the genus Monema Walker in China (Lepidoptera,Limacodidae)

Four species and one subspecies of the genus Monema Walker, 1855 are recognized from China, in which Monema tanaognatha Wu & Pan sp. n. is described as new, Monema coralina Dudgeon, 1895 and Monema meyi Solovyev & Witt, 2009 are newly recorded for China. The female of Monema meyi is reported for the first time. Monema nigrans de Joannis, 1901 and Monema melli Hering, 1931 are synonymized with Monema flavescens Walker, 1855. Cnidocampa rubriceps Matsumura, 1931 is regarded here as a subspecies of Monema flavescens Walker, 1855. The photographs of moths and their genitalia are given. A key to the species of the genus is provided.     

中国球须刺蛾属分类研究（鳞翅目：刺蛾科）（英文）

系统整理了中国球须刺蛾属的全部种类,共8种,包括1新种--双带球须刺蛾Scopelodes bicolor Wu et Fang。显脉球须刺蛾S. kwangtungensis Hering从亚种提升为种级阶元。编制了本属中国已知种的检索表,提供了成虫和外生殖器特征照片。新种模式标本保存在中国科学院动物研究所。     

中国鳞刺蛾属订正(鳞翅目,刺蛾科)(英文)

经过系统研究,发现我国的鳞刺蛾并不是一直被称为的眼鳞刺蛾Squamosa ocellata(Moore),共有2种和1亚种.首次报道了姹鳞刺蛾S.chalcites Orhant在我国有分布,描述了1新种,短爪鳞刺蛾S.brevisunca和1新亚种,云南亚种S.brevisunca yunnanensis.本文还描述了云南亚种的茧和老熟幼虫形态,编制了分种和亚种检索表,提供了成虫彩色照片和外生殖器特征图.模式标本保存在中国科学院动物研究所国家动物博物馆.     

铃刺蛾属在中国的首次发现及七新种记述（鳞翅目：刺蛾科）

首次报道铃刺蛾属Kitanola Matsumura及环铃刺蛾K. uncula (Staudinger)在中国有分布,并记述7新种,即针铃刺蛾K. spina sp. nov.,小针铃刺蛾K. spinula sp. nov.,线铃刺蛾K. linea sp. nov.,灰白铃刺蛾K. albigrisea sp. nov.,蔡氏铃刺蛾K. caii sp. nov.,短颚铃刺蛾K. brachygnatha sp. nov.和宽颚铃刺蛾K. eurygnatha sp. nov.。编制了本属中国已知种的检索表,提供了成虫彩色照片和外生殖器特征图。新种模式标本均保存在中国科学院动物研究所。