中国大痣小蜂属食植群记述（膜翅目：长尾小蜂科）

本文报导中国大痣小蜂属Ｍｅｇａｓｔｉｇｍｕｓ食植群Ｐｈｙｔｏｐｈａｇｏｕｓ ｇｒｏｕｐ １２种,其中包括５新种：黄杉大痣小蜂Ｍｅｇａｓｔｉｇｍｕｓ ｐｓｅｕｄｏｔｓｕｇａｐｈｉｌｕｓ ｓｐ．ｎｏｖ．（寄生华东黄杉Ｐｓｅｕｄｏｔｓｕｇａｇａｓｓｅｎｉｉ）,拟海棠大痣小蜂Ｍｅｇａｓｔｉｇｍｕｓ ｐｓｅｕｄｏｍａｌｉ ｓｐ．ｎ．（寄主不明）,基室大痣小蜂Ｍｅｇａｓｔｉｇｍｕｓ ｃｅｌｌｕｓ ｓｐ．ｎｏｖ     

我国某些苏铁类生殖器官化石的发现兼论苏铁类起源

本文对苏铁类化石的系统分类作了概要的介绍。重点报道了笔者在近廿年来所采集的苏铁类生殖器官化石,特别是中晚石炭世的一枚苏铁大孢子叶化石的发现,将苏铁类起源的时间大大地推前了,并指出其起源地应在中国西北的甘肃地区。所有这些生殖器官的发现将推动苏铁化石生殖生物学的发展,对其起源、分布、演化和苏铁植物区系的形成和发展提供了极为重要的材料。     

华南大戟科植物的增补

作者清理采自中国南部大戟科标本过程,发现一些需增补的分类群,现报道其中２个新种：分布于广东封开县的印禅铁苋菜Ａｃａｌｙｐｈａｗｕｉ和印禅三宝木Ｔｒｉｇｏｎｏｓｔｅｍｏｎｗｕｉ;２个新纪录种：分布于云南勐海县的短序白桐树Ｃｌａｏｘｙｌｏｎｓｕｂｓｅｓｓｉｌｉｆｌｏｒｕｍ和生长于海南南沙群岛的南沙大戟Ｅｕｐｈｏｒｂｉａｒｅｎｉｆｏｒｍｉｓ;１个近代生长于广东、贵州和四川的归化种－桃叶猩猩草Ｅｕｐｈｏｒｂｉａｈｅｔｅｒｏｐｈｙｌｌａ,而将依据四川渡口的标本命名的柳叶大戟Ｅ．ｅｐｉｌｉｂｉｉｆｏｌｉａ作为它的新异名．     

中国樟科新分类群

描写了西藏墨脱县的９个新种和两个新变种,它们是墨脱油丹、西藏球楠、扁果木姜子、勃生木姜子、少花木姜子、树志木姜子、柔毛长蕊木姜子（变种）、西藏新木姜子（变种）、纤枝钓樟等。     

Mutations in somePolycomb group genes ofDrosophila interfere with regulation of segmentation genes

Mutations in severalPolycomb (Pc) group genes cause maternal-effect or zygotic segmentation defects, suggesting thatPc group genes may regulate the segmentation genes ofDrosophila. We show that individuals doubly heterozygous for mutations inpolyhomeotic and six otherPc group genes show gap, pair rule, and segment polarity segmentation defects. We examined double heterozygous combinations ofPc group and segmentation mutations for enhancement of adult and embryonic segmentation defects.Posterior sex combs andpolyhomeotic interact withKrüppel ² and enhance embryonic phenotypes ofhunchback andknirps, andpolyhomeotic enhanceseven-skipped. Surprisingly, flies carrying duplications ofextra sex combs (esc), that were heterozygous for mutations ofeven-skipped (eve), were extremely subvital. Embryos and surviving adults of this genotype showed strong segmentation defects in even-numbered segments. Antibody studies confirm that expression ofeve is suppressed by duplications ofesc. However,esc duplications have no effect on other gap or pair rule genes tested. To our knowledge, this is only the second triplo-abnormal phenotype associated withPc group genes. Duplications of nine otherPc group genes have no detectable effect oneve. Expression ofengrailed (en) was abnormal in the central nervous systems of mostPc group mutants. These results support a role forPc genes in regulation of some segmentation genes, and suggest thatesc may act differently from otherPc group genes.     

Flight-correlated activity changes in neurons of the lateral accessory lobes in the brain of the locust Schistocerca gregaria

The study investigates activity changes in neurons of the lateral accessory lobes in the brain of the locust Schistocerca gregaria during wind-elicited tethered flight. Neurons with ascending projections from the ventral nerve cord to the lateral accessory lobes showed flight-associated excitations which were modulated in the flight motor rhythm. Descending neurons with ramifications in the lateral accessory lobes were tonically excited corresponding to flight duration. The onset of wind-elicited responses in the descending neurons preceded the onset of flight motor activity by 22–60 milliseconds. Neurons connecting the lateral accessory lobes with the central body, the anterior optic tubercles, or other brain areas showed a variety of responses including activity changes during flight initiation and flight termination. Activity in many of these neurons was less tightly coupled to the flight situation and often returned to background levels before flight was terminated. Most of the recorded neurons responded, in addition, to stationary visual stimuli. The results suggest that the lateral accessory lobes in the locust brain are integrative links between the central body, visual pathways, and the ventral nerve cord. The possible involvement of these brain areas in flight control is discussed.     

中国毛茛科植物小志(十七)

在本文中描述了乌头属和翠雀属各一新种和一新亚种,唐松草属一新种,侧金盏花属一新亚种,以及毛茛属五新种,首次报道了圆叶唐松草在中国西藏南部的分布,在对叶、雄蕊和心皮的形态特征进行了分析之后认为,这种植物与特产云南的糙叶唐松草有一定亲缘关系。     

湖北绿球藻目新植物

本文报道采自湖北省绿球藻目的5个新种,即粗角四棘藻、六锥四角藻、钝尖月形藻、湖北胸甲藻和三角空心藻。     

中国兰科一新记录属──指柱兰属

报道了中国兰科植物一个分布新记录的属－指柱兰属和该属一新记录的种－指柱兰。     

云南省突颚反颚茧蜂属一新种记述（膜翅目：茧蜂科：反颚茧蜂亚科）

本文描述了云南省突颚反颚茧蜂属ＨｅｒａｔｅｍｉｓＷａｌｋｅｒ１新种─—缺刺反颚茧蜂Ｈ．ｅｎｎｄｉｓＷｕｅｔＣｈｅｎ,并建立了该属中国已知３种的分种检索表。新种模式标本保存于福建农业大学益虫室。