Neoconocephalus robustus References Neoconocephalus robustus insect Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: cone-headed grasshopperA loud North American species, N. robustus, produces a continuous buzz that is accompanied by a droning hum, probably created by wing vibrations. The song of N. retusus is a loud, shrill whir in a high key. Read MoreA loud North American species, N. robustus, produces a continuous buzz that is accompanied by a droning hum, probably created by wing vibrations. The song of N. retusus is a loud, shrill whir in a high key. Read More