NEW WORLD JUGLANDACEAE: A NEW SPECIES OF ALFAROA FROM MEXICO

Alfaroa mexicana is described as new. Certain aspects of the wood anatomy, inflorescence, pollen, staminate flower, and pistillate flower morphology are compared with previous findings on the three other species of Alfaroa and representatives of the closely related genus Engelhardia.     

甘松醛：一个新的倍半萜过氧化物

从甘松(Nardostachys chinensis.Batal)的根中分离到了一个新的倍半萜过氧化物——甘松醛(Nardosaldehyde),并通过J-分解谱等二维核磁共振技术鉴定了其结构。     

中国斑蚜科一新属一新种一新亚种记述(同翅目:蚜总科)

本文记述了中国斑蚜科一新属,茴斑蚜属Ｆｏｅｎｉａｐｈｉｓ Ｚｈａｎｇ ｅｔ Ｑｉａｏ,ｇｅｎ．ｎｏｖ．,一新种,长圈茴斑蚜Ｆ．ｏｂｌｏｎｇｉｓｅｎｓｏｒｉａ Ｑｉａｏ ｅｔ Ｚｈａｎｇ,ｓｐ．ｎｏｖ．和一新亚种聂长斑蚜连城亚种Ｔｉｎｏｃａｌｌｉｓ ｎｅｖｓｋｙｉ ｌｉａｎｃｈｅｎｇｅｎｓｉｓ Ｑｉａｏ ｅｔ Ｚｈａｎｇ,ｓｓｐ．ｎｏｖ．。所有模式标本均存放在中国科学院动物研究所昆虫标本馆内。     

中国环蛱蝶属的新种,新亚种及新级位：鳞翅目：蛱蝶科

本文描述采自陕西的环蛱蝶属１新种－周环蛱蝶Ｎｅｐｔｉｓｃｈｏｕｉｓｐ．ｎｏｖ．;将黄环蛱蝶伊洛亚种ＮｅｐｔｉｓｔｈｅｍｉｓｉｌｖｓＦｕｈｓｔｏｒｆｅｒ提升为种,即伊洛环蛱蝶ＮｅｐｔｉｓｉｌｖｓＦｒｕｈｓｔｏｒｆｅｒ,认为黄环蛱蝶台湾亚种ＮｅｐｔｉｓｔｈｅｍｉｓｎｉｅｒｉＮｏｍｕｒａ应为伊洛环蛱蝶ＮｅｐｔｉｓｉｌｖｓＦｒｕｈｓｔｏｒｆｅｒ的１个亚种,描述了伊洛环蛱蝶的１新亚种－四川亚种Ｎｅｐｔｉｓｉ     

TWO NEW SPECIES OF DACINAE (DIPTERA: TRYPETIDAE) FROM NEW BRITAIN

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Two new species, Asiadacus triangularis and Asiadacus nigrescens are described and figured.     

TWO NEW SPECIES OF DACINAE (DIPTERA: TRYPETIDAE) FROM NEW GUINEA

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Two new species, Strumeta brevistriata and Strumeta nigella are described and figured.     

BIOLOGICAL EFFECTS OF ELF-EMF ENHANCED STRESS RESPONSE: NEW INSIGHTS AND NEW QUESTIONS

The effect of extremely low frequency electromagnetic fields (ELF-EMF) on gene expression and early development has been investigated in two different transgenic animals, the nematode Caenorhabditis elegans and Drosophila melanogaster, respectively. ELF-EMF enhanced biological reactions considerably in the presence of a second stressor (mild heat shock). In C. elegans, this effect could be demonstrated at the level of heat shock protein (hsp) gene expression by means of a lacZ reporter gene controlled by an hsp 16 or hsp 70 promoter. In Drosophila, the same experimental strategy led to ELF-EMF induced developmental defects, as well as to a considerable retardation of development. The findings are discussed with respect to possi- ble molecular mechanisms that might explain the observed synergistic ELF-EMF induced enhancement of the stress response. An experimental approach is suggested which may help to unravel the involved signal transduction pathways.     

A NEW SPECIES AND NEW SECTIONS OF RHIPIDOCLADUM (POACEAE: BAMBUSOIDEAE)

Rhipidocladum longispiculatum, a woody bamboo from the montane forests of Colombia, is described and illustrated. A classification of Rhipidocladum into three sections is proposed based on differences in internode structure, culm leaves, fimbriae of the foliage leaf sheaths, inflorescences, spikelet bracts, and foliar anatomy and micromorphology. Rhipidocladum section Rhipidocladum is distinguished by the zigzag rachis of the inflorescence and obtuse spikelet bracts, and includes only one species, R. harmonicum. Section Didymogonyx is characterized by alternating long and short internodes, and includes R. longispiculatum and R. geminatum. Section Racemiflorum is distinguished by its relatively long culm leaf blades, racemiform inflorescences, and mucronate or aristate spikelet bracts; the remainder of the species of the genus are classified within this section. A review of morphology, foliar anatomy, and micromorphology of the Arthrostylidiinae, the subtribe to which Rhipidocladum belongs, is presented. The problem of generic classification within the subtribe is discussed with respect to its mosaic pattern of morphological and anatomical variation.