Diptères, exotiques, nouveaux, ou, peu, connus, Paris, Roret, 1838, Diptera, insect, An illustration depicting a detailed study of various fly species, showcasing intricate anatomical features. The arrangement includes several labeled figures of flies, highlighting characteristics such as wing structures, body shapes, and distinct markings. Additional sketches provide close-up views of specific anatomical parts, emphasizing the diversity within the order Diptera. Each specimen is numbered and meticulously rendered, offering a valuable resource for entomological research and identification.