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, The illustration showcases a variety of beetles, each intricately detailed to highlight their unique characteristics. At the center, a prominent beetle with a patterned shell is depicted in a larger size, showcasing its distinctive features, including long antennae and marked body texture. Surrounding it are smaller representations of additional beetles, each with different shapes and markings, nestled among slender grass-like plants. The illustration serves as a study of entomological diversity, emphasizing both the anatomical structure and natural habitat of these insects. Each beetle is numbered for reference, contributing to a scientific exploration of their classification.