Subject ASC0000cdz
The Intellectual observer.
v.6 (1865), (1865)
Harvard University, MCZ, Ernst Mayr Library
BHL Page 39489612
Keywords
Insects respiratory system intestines water hole insects life stages respiratory systems Dyhicus marginalis Water beetle pond Spiracle water beetle Digestive tract water spiracle digestive magnified spiracle of ditto digestive apparatus of Dyticus marginatis biology swamp bugs landscape entomology digestion magnified image environment insect microscopic view great water beetle