who is this aforesaid person?
He was a Greek philosopher and polymath.
Aristotle
Aristotle (; "Aristotélēs", ; 384–322 BC) was a Greek philosopher and polymath during the Classical period in Ancient Greece. Taught by Plato, he was the founder of the Lyceum, the Peripatetic school of philosophy, and the Aristotelian tradition. His writings cover man
how many species have been named in the order coleoptera 400,000 species. what is this species? They are insects. where did they get their name from? It comes from the Greek word "koleopteros",  given to the group by Aristotle for their elytra, hardened shield-like forewings, from "koleos", sheath, and "pteron", wing.
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Aristotle [SEP] Introduction
Though Aristotle wrote many elegant treatises and dialogues for publication, only around a third of his original output has survived, none of it intended for publication. Aristotle's views on physical science profoundly shaped medieval scholarship. Their influence extended from Late Antiquity and the Early Middle Ages into the Renaissance, and were not replaced systematically until the Enlightenment and theories such as classical mechanics were developed. Some of Aristotle's zoological observations found in his biology, such as on the hectocotyl (reproductive) arm of the octopus, were disbelieved until the 19th century. His works contain the earliest known formal study of logic, studied by medieval scholars such as Peter Abelard and John Buridan.