Arcana entomologica, or Illustrations of new, rare, and interesting insects, London, William Smith, 1845 i.e. 1841-1845, insects, arthropoda, entomology, classification, pictorial works, arthropod, This illustration showcases a series of detailed entomological studies, featuring various species of beetles. The diagram includes labeled anatomical features such as antennae, legs, and specific body segments, allowing for identification and comparison among different beetle types. Each segment is meticulously rendered, highlighting the intricacies of their physical structures, with numbers indicating specific parts. This scientific representation is aimed at aiding in the understanding of beetle morphology and classification within entomology.