The present members of the order Hemiptera (sometimes referred to as Rhynchota) were historically placed into two orders, the so-called Homoptera and Heteroptera/Hemiptera, based on differences in wing structure and the position of the rostrum.
Os representantes actuais da orde Hemiptera (ás veces denomindaos Rhynchota) foron situados historicamente en dúas ordes, os Homópteros e os Heteroptera/Hemiptera, baseándose en diferfenzas na estrutura das ás e na posición do rostro.