<prompt> Plague is transmitted by all EXCEPT?X. CheopsisX. AstiaPulexirritansCulex  <response>: Ans. d CulexRef : K. Park 23rd ed. 292-93 The commonest and most effective vector of plague is rat flea x.cheopsis. Others are X.Astia, X.Brasiliensis and Pulexirritans. Culex is a vector of lymphatic filariasis and Japanese encephalitis culex tritaeniorhynchus. 