河南省襀翅目一新记录属种记述

报道了河南叉襀科一新纪录属：球尾叉襀属Sphaeronemoura,并记述了一新纪录种：Sphaeronemoura songshana.该属鉴别特征为颈侧片的内外两侧具有一不分支的腊肠状颈鳃;雄成虫腹端第8背板后缘延伸,略不对称;第10背板在肛上突基部下方形成一个纵向的膜质区,其侧缘通常有尖锐的隆突;肛侧突中叶形成钝圆的突起;肛上突不对称,端部有长的鞭状突出物.雌成虫的鉴别特征为第7腹板前生殖板后缘中部向前明显凹入,后生殖板有2个骨化的侧骨片.该属稚虫尾须念珠状,端部数节逐渐变大,每节具1圈长鬃,鬃间有1簇短的刚毛,为其与近缘属的有效鉴别特征.观察标本保存在河南科技学院昆虫标本馆.

A new record genus and species of Plecoptera from Henan,China

The genus Sphaeronemoura the stonefly family Nemouridae belonging to the superfamily Nemouroidea is recorded from Henan Province of central China for the first time.The genus is noted by the single sausage-like cervical gills originating from each side of the lateral cervical scleritein the adult stage and swollen cercal segments in nymphal stage.Based on the a nymph and a female specimens collected from Linzhou,northern Henan Province,the species S.songshana is recognized and redescribed from male and female herein for further safe idenfication.This species is characterized by males tergum 8 having a large posterior plate that partially overlaps tergum 10 and the epiproct with a long curved flagellum gradually tapering to a filiform tip.Females of the species are defined by a saddle-shaped pregenital plate with a rectangular posterior emargination flanked by two posterolateral lobes.The studied material is kept in Insect Collection of Henan Institute of Science and Technology.