Flook P K, Rowell C H
Institute of Zoology, University of Basel, Switzerland.
Mol Phylogenet Evol. 1997 Aug;8(1):89-103. doi: 10.1006/mpev.1997.0412.
Fragments of both mitochondrial ribosomal RNA genes of 32 caeliferan taxa (representing six of the seven superfamilies) and six outgroup Orthopteroids were sequenced. The combined alignment length was 630 bp after removal of all ambiguously aligned positions. Separation for the basal taxa was problematic and analysis using the LogDet transformation indicated that shared base composition biases were a confounding factor. The suborder Caelifera and all traditional caeliferan superfamilies except the Pamphagoidea are retrieved as monophyletic groups, though the Eumastacoidea lack significant bootstrap support. Of the traditional pamphagoid taxa, the Pamphagidae is embedded between classically acridid subfamilies, whereas Pyrgomorphidae is placed close to the Pneumoroidea. The morphological similarities of the Pyrgomorphidae and Pamphagidae may thus be homoplasic. A consensus tree based on five different methods of analysis indicated the following order: (Tridactyloidea, Tetrigoidea (Eumastacidae, Proscopiidae (Pneumoridae, Pyrgomorphidae (Acrididae + Pamphagidae)))).
对32种蝗亚目分类单元（代表七个超科中的六个）以及六个外群直翅类昆虫的线粒体核糖体RNA基因片段进行了测序。去除所有比对不明确的位置后，合并后的比对长度为630 bp。基部类群的划分存在问题，使用对数行列式变换进行分析表明，共享碱基组成偏差是一个混杂因素。除蚤蝼超科外，蝗亚目及所有传统的蝗亚目超科均被检索为单系类群，尽管蜢超科缺乏显著的自展支持。在传统的蚤蝼类分类单元中，蚤蝼科嵌于典型的蝗科亚科之间，而锥头蝗科则靠近癞蝗总科。因此，锥头蝗科和蚤蝼科的形态相似性可能是同形的。基于五种不同分析方法的一致树显示如下顺序：（三趾蝗总科，短足蝗总科（蜢科，原蝗科（癞蝗科，锥头蝗科（蝗科 + 蚤蝼科））））。
