SINCE 1828
Protohemiptera
plural noun
Pro·to·hemiptera
| \ "+\
Definition of Protohemiptera
: an order of extinct insects known only from the Upper Carboniferous and Permian, formerly considered ancestral to the Hemiptera but now usually regarded as closely related to the Palaeodictyoptera, and characterized by suctorial mouthparts and by a wing venation like that of the Palaeodictyoptera
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