▁work ▁has ▁been ▁done ▁by ▁Dr . ▁C . ▁L uer ▁of ▁M OB OT . ▁A ▁new ▁analysis , ▁based ▁on ▁DNA ▁testing , ▁has ▁confirmed ▁on ▁the ▁whole ▁the ▁classification ▁of ▁the ▁sub tri be ▁Ple uro th all id inae , ▁with ▁however ▁Ple uro th all is ▁as ▁the ▁main ▁difference . ▁This ▁should ▁not ▁surprise ▁anyone , ▁since ▁this ▁somewhat ▁artificial ▁genus ▁has ▁been ▁the ▁dump ing ▁ground ▁for ▁species ▁that ▁did ▁not ▁fit ▁into ▁any ▁other ▁genus . ▁New ▁gen etic ▁insight ▁has ▁broken ▁up ▁this ▁huge ▁genus ▁and ▁made ▁it ▁more ▁consistent ▁with ▁the ▁principles ▁of ▁mon oph y let ic ▁gener a ▁and ▁evolution ary ▁relationships . ▁ ▁Several ▁times ▁before , ▁a ▁splitting ▁up ▁has ▁been ▁attempted , ▁but ▁there ▁were ▁always ▁too ▁many ▁intermediate ▁forms . ▁In ▁ 2 0 0 4 ▁the ▁new ▁gener a ▁A cian ther a , ▁An cip it ia , ▁An til la , ▁Ap oda - pr ore pent ia , ▁Are ld ia , ▁At op og los sum , ▁B ren esia , ▁Cro code il ant he ▁were ▁created , ▁incorpor ating ▁a ▁large ▁number ▁of ▁former ▁Ple uro th all is ▁species ▁( Mon og r . ▁Syst . ▁Bot . ▁Missouri ▁Bot . ▁Gard . ▁ 9 5 : ▁ 2 5 5 . ▁ 2 0 0 4 ▁[ F eb ▁ 2 0 0 4 ]). ▁The ▁sub gener a ▁Ple uro th all is ▁and ▁Spe ck lin