August Johann Rösel von Rosenhof the fathers of German entomology. The fourth part is practically a monograph of the spider Araneus diadematus. The description of the animal is illustrated by six plates which show the differences in variation of the colouring of the species. They show also internal dissections. Rosenhof was interested in the production of silk but he confused the anus with the opening of silk-producing glands. He published, between 1753 and 1758, "Historia naturalis Ranarum nostratium" devoted to frogs. The quality of the work, in particular of its illustrations, make it one of the most beautiful devoted to these animals. He presented the
Black garden ant Black garden ant The black garden ant ("Lasius niger"), also known as the common black ant, is a formicine ant, the type species of the subgenus "Lasius", found all over Europe and in some parts of North America, South America, Australia, Asia and Australasia. The European species was split into two species; "L. niger" is found in open areas, while "L. platythorax" is found in forest habitats. It is monogynous, meaning colonies have a single queen. "Lasius niger" colonies can reach in size up to around 40,000 workers in rare cases but 4,000–7,000 is around average. A "Lasius niger" queen