Shows how air enters the spiracles into the respiratory system of an insect.
John B. Smith Economic Entomology (Philadelphia and London: J.B. Lippincott Co, 1896)
TIFF (full resolution)
2400×799, 157.7 KiB
Large GIF
1024×340, 15.0 KiB
Medium GIF
640×213, 9.0 KiB
Small GIF
320×106, 4.3 KiB