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- Diagram of a longitudinal section of a mosquito
- Normal position of the larvæ of Culex and Anopheles in the water
- A flesh fly
- A millipede
- A true scorpion
- A whip-scorpion
- Aëdes calopus; larva
- An American tarantula
- Mosquito
- Mosquito
- Anopheles quadrimaculatus mosquito
- Argus persicus. Capitulum of male
- Auchmeromyia luteola
- Beak of hemipteron
- Simulium venustum