▁described ▁by ▁Edward ▁Mey rick ▁in ▁ 1 9 2 8 . ▁It ▁is ▁en demic ▁to ▁the ▁Hawai ian ▁island ▁of ▁O ahu . ▁ ▁The ▁lar va e ▁feed ▁on ▁K ad ua ▁cor ia ce a . ▁The ▁lar va e ▁make ▁large ▁g alls ▁on ▁the ▁new ▁st ems ▁of ▁the ▁host ▁plant . ▁ ▁External ▁links ▁ ▁Category : M oth s ▁described ▁in ▁ 1 9 2 8 ▁Category : Mer im net ria ▁Category : End em ic ▁moth s ▁of ▁Hawai i <0x0A> </s> ▁S col yt us ▁j ac ob son i ▁is ▁an ▁el m ▁b ark ▁be et le ▁occurr ing ▁in ▁for ests ▁of ▁mixed ▁broad - le aves ▁with ▁el m ▁trees ▁in ▁Asia . ▁In ▁sout he astern ▁Russia , ▁during ▁years ▁of ▁out break s ▁S . ▁j ac ob son i ▁often ▁attacks ▁health y ▁trees ▁along ▁forest ▁edges ▁or ▁standing ▁alone ▁along ▁roads ▁and ▁in ▁fields ▁and ▁gard ens , ▁making ▁it ▁an ▁important ▁p est ▁for ▁el m ▁trees ▁there . ▁Report ed ▁hosts ▁include ▁Ul mus ▁dav id iana , ▁Ul mus ▁japon ica , ▁Ul mus ▁lac ini ata , ▁Ul mus ▁prop in qua , ▁Car pin us ▁bet ulus , ▁and ▁P yrus ▁us s uri ensis . ▁ ▁Description ▁ ▁Body ▁length ▁is ▁ 3 – 5   mm ▁long . ▁The ▁general ▁color ▁is ▁dark - b rown ▁and ▁sh ining , ▁with ▁l ighter ▁legs , ▁el y