ure l ▁w ilt ▁is ▁a ▁disease ▁of ▁re db ay ▁( Per se a ▁bor b onia ) ▁caused ▁by ▁R aff ae lea ▁la ur icola . ▁This ▁fung us , ▁har bor ed ▁in ▁the ▁my c ang ium ▁of ▁the ▁re db ay ▁amb ros ia ▁be et le ▁X yle bor us ▁gl ab r atus , ▁is ▁in ▁the ▁form ▁of ▁a ▁bud ding ▁ye ast ▁in ▁the ▁my c ang ium ▁and ▁a ▁fil ament ous ▁fung us ▁in ▁gall eries ▁of ▁the ▁be et le . ▁Several ▁species ▁also ▁resident ▁in ▁the ▁be et le ▁were ▁described ▁as ▁new ▁to ▁science ▁in ▁ 2 0 1 0 : ▁R .   elli pt icos por a , ▁R .   f us ca , ▁R .   sub al ba , ▁and ▁R .   sub f us ca . ▁ ▁Species ▁ ▁R aff ae lea ▁alb iman ens ▁R aff ae lea ▁amb ros iae ▁R aff ae lea ▁ar x ii ▁R aff ae lea ▁bar b ata ▁R aff ae lea ▁canad ensis ▁R aff ae lea ▁elli pt icos por a ▁R aff ae lea ▁fus ca ▁R aff ae lea ▁h enne ber ti i ▁R aff ae lea ▁la ur icola ▁R aff ae lea ▁mont ety i ▁R aff ae lea ▁qu erc iv ora ▁R aff ae lea ▁qu erc us - m ong ol ica e ▁R aff ae lea ▁sant oro i ▁R aff