基于形态特征和部分基因序列的中国蚱科四个种的分类订正

为了澄清形态相似种锯齿股蚱Tetrix dentifemura和粗体蚱T. grossus及红背悠背蚱Euparatettix erythronotus和九万山悠背蚱E. jiuwanshanensis的分类问题，我们分别从形态学分类和DNA数据对这4种蚱进行了分析。形态学特征分析结果显示：锯齿股蚱和粗体蚱形态相同之处非常多，而形态的不同之处主要表现在两者后翅的长度差异相对较大；红背悠背蚱和九万山悠背蚱在形态上共同之处很多，仅在头顶与颜面隆起的形状、触角与侧单眼着生位置以及后足股节长度等方面有微小差异。对蚱科2属4种昆虫的Cyt b，16S rRNA和18S rRNA基因部分序列进行了测定，3个片段共2 902 bp。发现蚱属的锯齿股蚱和粗体蚱的这三个基因同源序列完全一致，悠背蚱属的红背悠背蚱和九万山悠背蚱的同源序列也完全一致。结合形态学比较和基因序列分析结果，提出粗体蚱和九万山悠背蚱分别是齿股蚱和红背悠背蚱的同物异名。

Revision of the four species of Tetrigidae (Orthoptera: Tetrigoidea) from China based on morphological characteristics and partial sequences of three genes

To clarify the classification of the morphologically similar species Tetrix dentifemura and T.grossus,and Euparatettix erythronotus and E.jiuwanshanensis,we analysed the morphology and DNA data of the four insects of the family Tetrigidae.The morphological comparision showed that there are a lot of common characteristics between T.dentifemura and T.grossus,but with major difference including the length of hind wings;for E.erythronotus and E.jiuwanshanensis,there are many common characteristics except little difference,in terms of the shape of frontal ridge,the places of antenna and lateral ocelli,and the length of posterior femora.The fragments of Cyt b,16S rRNA and 18S rRNA genes were sequenced for 4 species from 2 genera of Tetrigidae.The united sequence of the 3 fragments is 2 902 bp in length.We found that the three fragment sequences of T.dentifemura and T.grossus were completely identical,and the three fragments of E.erythronotus and E.jiuwanshanensis were also identical.Combining the results of morphological comparison with gene sequence analysis,we proposed that the T.grossus should be treated as a junior synonym of T.dentifemura,and E.jiuwanshanensis should be treated as a junior synonym of E.erythronotus.