中国枝角类四新记录亚种(鳃足纲:双甲目)

FOUR NEW RECORDS OF WATER FLEAS FROM CHINA(Branchiopoda:Cladocera)

本文描述了采自四川等省的、我国首次发现的4个枝角类亚种,即美弧网纹溞Ceriodaphnia pulchella pseudohamata Bowkiewcz,1925,西方笔纹溞Graptoleberis testudinaria occidentalis Sars,1901,无常平直溞Pleuroxus laevis incertus Brehm,1934以及宽尾平直潘P.aduncus latic-audatus Brehm,1933。解剖观察描述了盘肠溞科枝角类的头孔,并首次将我国淡水枝角类的分类鉴定深入到亚种水平。

The present paper deals with four species of cladocerans:Ceriodaph-nia pulchella pseudohamata Bowkiewicz,1925(Daphniidae),Graptoleberistestudinaria occidentalis Sars,1901(Ghydoridae),Pleuroxus laevis incertusBrehm,1934(Chydoridae),and P.aduncus laticaudatus Brehm,1933(Chydoridae).These were recorded for the first time from China and werecollected from Jiangxi,Heilongjiang and Sichuan provinces respectivelyduring the recent years.The head pores of chydorid cladocerans werefigured and described as diagnostic character in the text.