Tetigonian or Tettigonian: How To spell?
The word Tetigonian is misspelled against Tettigonian, a noun meaning "Any one of numerous species of Hemiptera belonging to Tettigonia and allied genera; a leaf hopper."
Tettigonian has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings te & igonian which should not be misspelled with single 'T'
Wrong Spelling:  te-t-igonian  Correct Spelling:  te-tt-igonian 
Find more incorrect spellings of Tettigonian to spell right way.