Serifera or Serrifera: How To spell?
The word Serifera is misspelled against Serrifera, a noun meaning "A division of Hymenoptera comprising the sawflies."
Serrifera has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings se & ifera which should not be misspelled with single 'R'
Wrong Spelling:  se-r-ifera  Correct Spelling:  se-rr-ifera 
Find more wrongly spelled words of Serrifera to spell it well.