'''Johann Christian Ludwig Hellwig'''
After studies of [[mathematics]] and [[natural history]] at the university of [[Frankfurt]]
In 1771, he taught in two colleges of Brunswick then he became professor of [[philosophy]] of the university of [[Helmstadt]]. In 1790, he taught mathematics and natural science at the military academy of [[Braunschweig]].
He exerted a great influence on his pupils. He was the tutor and the father-in-law of the German entomologist [[Johann Karl Wilhelm Illiger]] (1775-1813), who became director of the zoological garden of [[Berlin]], of the mineralogist [[Gottlieb Peter Sillem]] (who succeeded him at the school of Braunschweig
His work in the taxonomy of the insects in collaboration with Illiger and Hoffmannsegg is famous and was the entomological origin of the collections of the [[Humboldt Museum|University of Berlin]].
He was also the inventor of