Presents a study that assessed genetic relationships between Macrophthalmus japonicus and M. banzai based on mitochondrial DNA sequences from 12S ribosomal RNA (rRNA) to 16S rRNA genes. Investigation of the social behavior of Australian M. japonicus; Evaluation of the waving display of Korean M. banzai; Comparison of the waving display of Australian M. japonicus with that of Japanese M. japonicus and M. banzai.