The localization and structure of a neurohemal H-organ in Acrida bicolor (Thunberg) and Locusta migratoria (Linneaus) (Orthoptera)

Acrida bicolor (Thunberg) and Locusta migratoria (Linneaus) nymphs were taken as objects to investigate the presence of neurohemal H-organ in Orthoptera of which was previously reported in Lepidoptera. A triangle-shaped H-organ was clearly observed in between the suboesophagial and prothoracic ganglions in two species.