海南岛斑腿蝗科一新种(直翅目:蝗总科)

1975年5月及1982年2月,在海南岛尖峰岭热带林自然保护区进行蝗虫调查中,发现斑腿蝗科龙州蝗属(Longzhouacris)一新种。现报道如下。模式标本保存于中山大学昆虫研究所及陕西师范大学生物系。     

甘肃斑翅蝗科一新属新种(直翅目,蝗总科)

记述了采自甘肃肃南斑翅蝗科1新属1新种,拟皱膝蝗属Angaracrisoides gen．nov．,黑翅拟皱漆蝗An—garacrisiodes nigripennis sp．nov．,并与近缘属蔷蝗属Uvaroviola B—Bienko和皱漆蝗属Angaracris B—Bienko进行了比较。模式标本保存于陕西师范大学动物研究所昆虫标本室。     

广东省卵翅蝗属一新种(直翅目:蝗总科)

在调查广东省封开县黑石顶自然保护区的昆虫中,作者发现斑腿蝗科卵翅蝗属(Caryanda Stl,1878)一新种。模式标本保存于中山大学昆虫学研究所标本室。 黑条卵翅蝗Caryanda nigrolinedta新种(图1—9) 雄虫 体型小。头短于前胸背板。触角丝状,细长,向后远超过后足股节基部,中段     

窝蝗属一新种记述（直翅目：蝗总科：剑角蝗科）

本文记述剑角蝗科窝蝗属一新种:甘肃窝蝗Foveolatacris gansuacrisis sp.nov.采自甘肃省天祝县。模式标本保存在中国科学院上海昆虫研究所。     

欧亚大陆癞蝗科分类系统(直翅目:蝗亚目)

对分布于欧亚大陆的癞蝗科Pamphagidae昆虫进行了亚科分类研究,将已知的47个属分为6个亚科:锯癞蝗亚科Prionotropisinae nov.,蠢蝗亚科Thrinchinae,癞蝗亚科Pamphaginae,鸣癞蝗亚科Tropidaucheninae nov.,聋癞蝗亚科Nocarodesinae nov.,秃癞蝗亚科Orchaminae nov.,其中包括4个新亚科。建立了欧亚大陆癞蝗科新的分类系统。     

横断山区斑腿蝗科二新种（直翅目：蝗总科）

１９９５年７—８月,在云南省西部横断山地区采到斑腿蝗科昆虫二新种,即高黎贡山凸额蝗,新种Ｔｒａｕｌｉａｇａｏｌｉｇｏｎｇｓｈａｎｅｎｓｉｓｓｐ．ｎ．及苍山拟裸蝗,新种Ｃｏｎｏｐｈｙｍａｃｒｉｓｃａｎｇｓｈａｎｅｎｓｉｓｓｐ．ｎ．     

中国蝗总科昆虫科间系统发育关系支序分析：直翅目;蝗亚目

在形态学研究的基础上,配方选择了１２个特征,利用Ｈｅｎｎｉｇ８６程序包,以支序分析探讨了中国蝗总科昆虫科间的系统发育关系。结果表明蝗虫类昆虫稳定的分为两大类,即癞蝗类和蝗类,本文建议蝗虫类昆虫分为分为两个总科较宜。长腹蝗亚科似归入斑腿蝗亚科更为合理;而皱腹亚科则应提升为独立科。     

欧亚大陆斑翅蝗科分类系统(直翅目: 蝗亚目)

对分布在欧亚大陆的斑翅蝗科Oedipodidae昆虫进行了亚科分类研究, 将已知的69个属分为7个亚科: 飞蝗亚科Locustinae, 斑翅蝗亚科Oedipodinae, 异距蝗亚科Heteropterninae subfam. n., 痂蝗亚科Bryodeminae, 异痂蝗亚科Bryodemellinae, 哑斑翅蝗亚科Oedipodacrinae subfam. n.和聋斑翅蝗亚科Rashidinae subfam. n., 其中包括3个新亚科。建立了欧亚大陆斑翅蝗科新的亚科分类系统。     

内蒙古沼泽蝗属一新种记述(直翅目:斑翅蝗科)

记述采自内蒙古地区斑翅蝗科昆虫1新种,即红股沼泽蝗Mecostethus rufifemoralis, sp. nov.,模式标本保存于陕西师范大学动物研究所昆虫标本室及河北大学博物馆.     

黑龙江省金色蝗属一新种 (直翅目：蝗总科)

 报道了采自黑龙江省的蝗总科昆虫一新种：佳木斯金色蝗Chry sacris jiamusi sp.nov.,并与其近似种辽宁金色蝗Ch.liaoningensis Zheng和秦岭 金色蝗Ch.qinlingensis Zheng做了比较。模式标本保存于东北师范大学生命科学学院 动物标本室。     

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.     

COPROMYXELLA: A NEW GENUS OF ACRASIDAE

A new genus of cellular slime molds, Copromyxella, is described together with four species that comprise it. Since it resembles Zopf's Copromyxa more than any genus presently recognized, but differs from it in important characteristics such as the smaller dimensions of its cellular elements and the delicacy of its fructifications, the name Copromyxella is chosen for the new taxon. Four species are included: C. silvatica, C. filamentosa, C. spicata, and C. coralloides. All are characterized by small myxamoebae with lobose and potentially “explosive” pseudopodia and may assume limax forms in liquid media; all possess nuclei with centrally positioned nucleoli; all lack true contractile vacuoles (with a single possible exception); all aggregate without stream formation; and all form fructifications with no demarcation into stalks and sori. Taxonomically the genus belongs in the Acrasidae with Copromyxa, Guttulinopsis and Acrasis rosea rather than in the better known Dictyostelidae that includes Dictyostelium and Polysphondylium.     

蚜科一新属一新种记述：同翅目：蚜总科

本文记述中国蚜虫1新属——丁化长管蚜属Chitinosiphum,模式种为丁化长管蚜C.abdomenigrum,sp.nov.,其寄主为瑞苓草Saussurea nigrescens Maxim,产地为中国陕西。     

裸藻植物新种和新记录

１．喜盐变胞藻　新种　图１：ａ－ｄＡｓｔａｓｉａ　ｈａｌｏｐｈｉｌｕｓＸｉｅｅｔＬｉｎｇ,ｓｐ．ｎｏｖ．细胞形态易变,长圆柱形至圆柱状纺锤形,长７０－１２７μｍ,宽１５－３０μｍ,后端具１乳头状的尾突。表质线纹不明显;副淀粉呈小颗粒状,多数;鞭毛未见;核明显,常中位。产地山西,运城,生于盐池边水沟,水温２３℃,ｐＨ７．５,１９８６．０６．０６,ＳＡＳ８６３１９（模式标本,保存于山西大学生命科学系植物标本室）,１９９１．０４．１０,ＳＡＳ９１０７７;西藏,班戈,生于盐碱湖中,水温９℃,ｐＨ１１,海…     

CIRCADIAN RHYTHMS OF PERFORMANCE: NEW TRENDS

This brief review is concerned with how human performance efficiency changes as a function of time of day. It presents an overview of some of the research paradigms and conceptual models that have been used to investigate circadian performance rhythms. The influence of homeostatic and circadian processes on performance regulation is discussed. The review also briefly presents recent mathematical models of alertness that have been used to predict cognitive performance. Related topics such as interindividual differences and the postlunch dip are presented. (Chronobiology International, 17(6), 719–732, 2000)