Three Mosquito Pools Test 'Positive' for WNV; Frisco to Spray Saturday, Sunday Nights. (August 12, 2016) The City of Frisco will spray for mosquitoes August 13 and 14 after receiving confirmation three additional mosquito pools tested âpositiveâ for West Nile virus (WNV). Read on...
Grasshoppers have large compound eyes and and have a board field of vision. Mouthparts-Mouthparts have evolved for special needs for different insects. They can chew, suck, pierce, lap, and sponge-up their food. Grasshopper has the most primitive type of mouthparts for chewing.
The tectum (Latin: roof) is a region of the brain, specifically the dorsal part of the mesencephalon (midbrain).This is contrasted with the tegmentum, which refers to the region ventral to the ventricular system.The tectum is responsible for auditory and visual reflexes. The superior colliculus is involved in preliminary visual processing and control of eye movements. 2  In non-mammalian vertebrates it serves as the main visual area of the brain, functionally analogous to the visual areas of the cerebral cortex in mammals. 3  The inferior colliculus is involved in auditory processing.