Incidence and management of white grub, Schizonycha ruficollis on seedlings of teak （Tectona grandis Linn, f,）

In investigation was conducted annually from 2002 to 2005 between the second week of May and the end of September on the incidence of scarab beetle, Schizonycha ruficollis （Fabricius） in a teak （Tectona grandis L.f.） nursery at Ramdongari, Nagpur, India. The immature stages, that is white grubs of the scarab beetle damaged 14%-52% of teak seedlings in the nursery beds, whereas the adult of the species, that is scarab beetles, were recorded on three new host trees （ Ziziphus xylopyra, Acacia catechu and A. leucophloea） in addition to the reported hosts such as ziziphus （Z. jujuba and Z. mauritiana）. Beetles of the S. ruficollis started emerging from the nursery beds just after the pre-monsoon showers and continued for 10-18 days. While beetle of S. ruficollis defoliated tree hosts available in the surroundings, the immature stages of the beetle caused major damage by feeding on root systerfls of teak seedlings with symptoms of wilting and mortality in forest nursery beds. The result of chemical and biological treatments for the management of grubs of S. ruficollis in nursery beds indicated phorate 10% granular at the rate of 20 g/m^2 and chlorpyriphos 20% emulsifiable concentrate at the rate of 5.0 mL/m^2 to be effective. Grubs of S. ruficollis have not been recorded previously as a major pest of teak （T. grandis）. This is also the first report on occurrence of S. ruficollis adults on tree hosts such as Z. xylopyra, A. catechu and A. leucophloea. White grubs being pests of economic importance and the toughest insects to manage, information given in this paper on incidence, pest status and management of Schizonycha ruficollis is of importance to researchers and forest nursery managers.     

Review of the subgenus Polyphylla (Granida) from continental Asia (Coleoptera, Scarabaeidae, Melolonthinae)

A review of Polyphylla Harris, 1841, species belonging to the subgenus Granida Motschulsky, 1861, from continental Asia is presented. One new species is described from Thailand: Polyphylla (Granida) simonisp. n.Polyphylla (Granida) nikodymi de Wailly, 1993, is recorded from Thailand for the first time. Polyphylla (Granida) minor Nomura, 1977, is recorded from Yunnan (China) for the first time. The previously unknown female of Polyphylla (Granida) phongsali Zídek, 2006, is described.     

A new species of Maladera from Jordan (Coleoptera: Scarabaeidae: Sericini)

A new Maladera species is described from Jordan: M. schnitteri sp. n. A key to the species of the subgenus Eusericula is given, and the habitus and genitalia are illustrated.

http://www.zoobank.org/urn:lsid:zoobank.org:pub:D41D75B5-D700-4C2B-9058-04D14006C810     

An update to the taxonomy of the genus Gastroserica Brenske (Coleoptera,Scarabaeidae, Sericini)

Based on the examination of newly collected material and additional specimens housed in Chinese collections, our knowledge of Gastroserica Brenske, 1897, is expanded. Here, seven new species are described, including habitus photographs and illustrations of the male genitalia: Gastroserica haoyui sp. n. (China: Zhejiang Prov.), G. fengduana sp. n. (China: Sichuan Prov.), G. wenzhui sp. n. (China: Guangxi Prov.), G. damingshanica sp. n. (from China: Guangxi Prov.), G. jinxiuensis sp. n. (China: Guangxi Prov.), G. liboensis sp. n. (China: Yunnan Prov.) and G. carolusi sp. n. (Laos). Additionally, we provide a distribution map of the new taxa and new distribution records of the known taxa.     

A new species of Maladera Mulsant & Rey, 1871 from Iran (Coleoptera: Scarabaeidae: Sericini) and a review of the distribution of the genus in Iran

A new species of Maladera Mulsant & Rey, 1871 is described from Iran: M. kermanensis sp. n. The habitus and genitalia of the new species are illustrated. Additional records of Maladera species and a checklist of the species occurring in Iran including a map of their distribution are given.

http://www.zoobank.org/urn:lsid:zoobank.org:pub:812B8D62-2DD5-42CF-8BCD-F576CF3D2A7E     

金龟甲性信息素的化学成分及其应用

金龟甲Scarabaeoidae性信息素研究主要集中在丽金龟亚科Rutelinae和鳃金龟亚科Melolonthinae。丽金龟亚科金龟甲的性腺由臀板和腹片顶端的上皮细胞组成,其性信息素成分主要是脂肪酸衍生物;而鳃金龟亚科金龟甲的性腺可以从腹部外翻,性信息素成分主要是氨基酸衍生物和萜烯类化合物。一些存在地理或季节隔离的物种具有结构相同的性信息素成分,但手性不同。在某些种类中,性信息素成分的手性对映体可能具有行为拮抗作用。本文综述了金龟甲性信息素的化学结构与应用的新进展。     

Conservation status of <Emphasis Type="Italic">Prodontria</Emphasis> (Coleoptera: Scarabaeidae) species in New Zealand

The genus Prodontria (Scarabaeidae: Melolonthinae), which comprises 16 described species, is an endemic southern New Zealand genus occupying lowland and coastal habitats, inter-montane basins and alpine environments. Many of the species have a limited distribution and face potential threats from habitat change and predation. The only species to be formally protected is P. lewisii Broun, commonly known as the Cromwell Chafer, which is now restricted to a 81-ha reserve in Central Otago. One undescribed lowland species might be extinct as a result of habitat modification. The current status of Prodontria species, the known distribution of species and potential threats are discussed. An erratum to this article can be found at     

White grubs,Holotrichia rustica and Holotrichia mucida (Coleoptera: Scarabaeidae) as pests of teak (Tectona grandis L. f.) seedlings

Abstract Field observations were carried out between 2002 and 2005 on bio‐ecology of white grubs infesting teak (Tectona grandis Linn. f.) seedlings at Ramdongari Forest Nursery, Forest Development Corporation of Maharashtra, Nagpur in central India. The study collected the data required for an integrated pest management strategy against the white grubs. The species damaging teak seedlings were Holotrichia rustica (Burmeister) and H. mucida Gyllenhal. The beetles (adults) of both these species began to emerge just after the pre‐monsoon showers and when the relative humidity had risen rapidly over several days, but before the first monsoon rains. While the adults fed and mated on naturally growing bushes of Ziziphus jujuba, Z. mauritiana, Z. xylopyra, Acacia leucophloea and A. catechu immediately after the emergence from the teak beds in the nursery, the immature stages (grubs) of both species fed on roots of the teak seedling, leading to plant death. This is the first report of (i) damage caused to teak seedlings by grubs of H. rustica and H. mucida, and (ii) of Z. jujuba and Z. mauritiana being hosts for the beetles of H. mucida and H. rustica. It is also the first detailed report on the field bio‐ecology of the H. rustica and H. mucida as major pests of teak. White grubs are among the toughest‐to‐manage pests of economic importance and information presented here on the pest incidence and damage of H. rustica and H. mucida is important to researchers and nursery field managers for the management of these pests on teak.