高翔蜉属一新种：蜉蝣目：扁蜉蝣科

本文记述采自湖南省大庸市高翔蜉属一新种。该种以其阳茎叶外侧面具有一向前弯曲的钩状突起为显著特征,可区别于本属其他种类。     

我国大陆细蜉属Caenis 修订及一新种描述(蜉蝣目:细蜉科)

我国大陆细蜉属Caenis共知5种,其中短铗细蜉Caenis parviforcipis(Zhou et al.)n．comb．由短尾蜉属Brachycercus转移而来;中华细蜉Caenis sinensis Gui et al．稚虫形态在本文中首次描述;另外从标本来看,已知的黑铗细蜉Caenis nigroforceps Zhou et al．实际为近岸细蜉Caenis rivulorum Eaton的新异名;本文描述1新种：花斑细蜉Caenis melanoleuca,sp．nov．;第5种黑点细蜉Caenis nigropunctata Klapalek也根据标本得到了确认。文中还给出了以上5种成虫和4种稚虫的检索表。所有标本都保存在南京师范大学生命科学学院。     

中国似动蜉属及一新种记述 （蜉蝣目：扁蜉科）

似动蜉属Cinygmina是我国常见扁蜉科类群,分布广泛。本文对该属我国已知4种（湖南似动蜉C. hunanensis,斜纹似动蜉C. obliquistrita,红斑似动蜉C. rubromaculata,宜兴似动蜉C. yixingensis)和一新种（叉似动蜉Cinygmina furcata sp. Nov.）的鉴别特征作了对比和图示,并确认海南似动蜉C. hainanensis是红斑似动蜉C. rubromaculata的同物异名(新异名)。     

中国香港细蜉属三新种记述(蜉蝣目:细蜉科)

记述了采自中国香港的细蜉科Caenidae,细蜉属Caenis3新种：点刻细蜉Caenis aspera sp.nov.、双突细蜉Caenis bicornis sp.nov.和光滑细蜉Caenis lubrica sp.nov.。模式标本均保存在中国广州华南农业大学昆虫学系昆虫标本室。     

中国扁蜉科二新种记述(昆虫纲,蜉蝣目)

记述采自中国香港的蜉蝣目扁蜉科2新种。根据稚虫和成虫的形态特征,详细描述了中国新纪录属康扁蜉属Compsoneuria 1新种：大埔浯康扁蜉Compsoneuria taipokauensis sp．nov．。该新种的成虫标本由稚虫在实验室内饲养而成。根据稚虫形态特征,详细描述了高翔蜉属1新种：箭鬃高翔蜉Epeorus sagittatus sp．nov．。     

安徽宽基蜉属一新种：蜉蝣目：细裳蜉科

本文报道在安徽汤口采集的宽基蜉属一新种——安徽宽基蜉。     

大鳃蜉属在中国的首次记录附一新种记述(蜉蝣目：小蜉科)

报道了中国一新纪录属,即大鳃明了 属Ｔｏｒｌｅｙａ Ｌｅｓｔａｇｅ（１９１７）,并详细描述了该属一新种,宽茎大鳃蜉Ｔ．ｇｒａｎｄｉｐｅｎｎｉｓ Ｚｈｏｕ,Ｓｕ ｅｔ Ｇｕｉ,ｓｐ．ｎｏｖ．的形态特征,并将其与近似种作了比较。     

短尾蜉属 (蜉蝣目 :细蜉科 )在中国的首次发现及一新种记述(英文)

本文报道短尾蜉属BrachycercusCrutis (1834)在中国的首次发现 ,并对该属一新种小铗短尾蜉Brachycercusparviforcipissp .nov .的形态特征作了详细描述 ,模式标本采自云南省昆明市松花坝水库。正模 :♂成虫 ,副模 :3♂成虫 ,采集时间 :VI 2 1996 ,采集人 :周长发和王备新 ,保存在南京师范大学生物系。综合利用小铗短尾蜉雄成虫的下列特征 ,可将它与同属已知的 19种区别开来 :1)触角色浅单一 ,梗节长度是柄节的三倍以上 ;2 )胸部背板棕色 ,前足腿节基部黑色 ,第一、第二、第九、第十节的腹部背板全部及其它每节背板的后缘为棕黑色 ,其他部分为淡黄色 ;3)与同属其它种相比 ,小铗短尾蜉的尾铗短小 ,不超过阳茎长度。     

埃蜉属一新种(蜉蝣目:多脉蜉科)(英文)

在海南省琼中县、陵水县和乐东县发现埃蜉属一新种,定名为海南埃蜉Ephoronhainanensissp.nov,新种与广泛分布于欧洲、亚洲北部（俄罗斯、蒙古、中国东北）的贞洁多脉蜉Ephoronvirgo（Oliver,1791）,相近似,但新种前翅MA脉分支点不与Rs脉第2次分支点位于同一纵线上,而在Rs脉第2次分支点之后;贞洁多脉蜉的前翅MA脉分支点与Rs脉第2次分支点位于同一纵线上。两者有明显的区别。     

中国蜉蝣属两异名及一新种记述(蜉蝣目,蜉蝣科)

我国大陆蜉蝣科蜉蝣属Ephemera中的张家界蜉E．zhangjiajiensis Zhang,Gui et You,1995实际是绢蜉E．serica Eaton。1871的同物异名(新异名),湖南蜉E．hunanensis Zhang,Gui et You,1995是梧州蜉E．wuchowensis Hsu,1938的异名(新异名)。本文还报道1新种——红斑蜉Ephemera rufomaculata sp．nov．的成熟稚虫和成虫。本种成虫腹部为棕红色,腹部背板1～2节具大面积的色块,腹部3～9节背板各具3对黑色纵纹,雄性外生殖器具发达的阳端突以及阳茎端部明显向后突出而十分独特,极易与已知种区分。本种稚虫因具有与成虫相似的腹部背板斑纹以及较小的上颚突起也易识别。     

Feeding Habits of Two Large Insects from a Desert Stream: Abedus herberti (Hemiptera: Belostomatidae) and Thermonectus marmoratus (Coleoptera: Dytiscidae)

Feeding preference experiments were conducted to determine the feeding habits of Abedus herberti (Heteroptera, Belostomatidae) and Thermonectus marmoratus (Coleoptera, Dytiscidae), two large insects in Sycamore Creek, an intermittent Sonoran desert stream, Arizona, U.S.A. Numbers of live versus dead prey consumed were tested between and across three prey sizes. Five prey species were offered simultaneously (5 live and 5 dead specimens) in each size class. We found that A. herberti preferred live prey of small and medium size, but it chose mainly dead prey in the large size class. These results fitted the model of size-selective predation (Zaret, 1980). Size dependent predators selected prey of increased size, according to their visibility, but only up to where difficulty in handling and probability of escape affect successful consumption. Snails were the most preferred prey of A. herberti. By contrast, T. marmoratus consumed only dead prey of all sizes, but it preferred soft organisms with thin cuticle, such as immature larvae of some mayflies, beetles, dragonflies or fishes.     

Life cycles and habitats of wisconsin heptageniidae (ephemeroptera)

Detailed studies were made of the life cycles of Heptageniidae known to occur in Wisconsin. 19 species had univoltine cycles while two and possibly a third had bivoltine cycles. Three univoltine species developed in late spring and early summer while the other univoltine species developed in fall, winter and early spring. For three of the univoltine species, eggs hatched both in fall and the following spring. Diagrams of the life cycles of 15 Wisconsin heptageniids are presented, illustrating the different types of life cycles. Also presented are observation on the food and habitats of the nymphs and flight periods of the adults.     

湖南省似动蜉属种类记述（蜉蝣目：扁蜉蝣科）

我国似动蜉属Cinygmina的种类已知3种。我们于1985～1986年在湖南省进行蜉蝣目昆虫调查时,采集到不少似动蜉属标本。经鉴定,除我国已知的3种外,还发现了一新种,定名为湖南似动蜉Cinygmina hunanensis。所有标本,包括新种模式标本,均用75％酒精保存,存放于南京师范大学生物系动物标本室。     

The influence of diet on the growth of Stenonema vicarium (Walker) (Ephemeroptera: Heptageniidae)

Laboratory studies compared the growth rate of Stenonema vicarium (Walker) nymphs on diets of detritus and natural stream periphyton. In three consecutive runs of the experiment, growth rates were consistently higher on periphyton (mean growth rate = 2.1% wet wt. d⁻¹) than detritus (mean = 1.8% wet wt. d⁻¹). The starting date of each run also significantly influenced growth rates. In each treatment growth rates generally decreased over the course of the 3 runs, and ca. one-half of the nymphs in the last run did not molt or grow. It appeared that growth of S. vicarium may be partially controlled by seasonal factors.     

“蜉蝣”名称考

“蜉蝣”一词最早见于《诗经》。蜉蝣成虫极短的生活期、暴发式的羽化及大量蜉蝣成虫几乎同时死亡后漂浮于水面可能是“蜉蝣 (浮游 )”的真正含义及由来。