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.
MUTUN, Serap and ÖBER, Ayla (1998) "The localization and structure of a neurohemal H-organ in Acrida bicolor(Thunberg) and Locusta migratoria (Linneaus) (Orthoptera)," Turkish Journal of Zoology: Vol. 22: No. 1, Article 5. Available at: https://journals.tubitak.gov.tr/zoology/vol22/iss1/5