Scale Small 320×293 Medium 640×586 Large 1024×937 Download Tiff Original 3198×2926 | (8.9 MB) Description An adult female scale Keywords Insecta, invertebrates, parasitic insect, scales Galleries Other Orders of Insects Source: David Starr Jordan and Vernon Kellogg,Animal Life: A First Book of Zoology(New York:D. Appleton and Company, 1912) 196