. ▁The ▁ab d omen ▁is ▁brown ish ▁grey , ▁the ▁ab dom inal ▁hair ▁tu ft ▁is ▁about ▁two ▁mill im eters ▁wide ▁and ▁thus ▁nar ro wer ▁than ▁the ▁ab d omen , ▁which ▁represents ▁a ▁differenti ator ▁against ▁Als oph ila ▁ac er aria . ▁ ▁The ▁pal ps ▁are ▁very ▁short , ▁the ▁sens ors ▁are ▁slightly ▁to oth ed . ▁The ▁prob os cis ▁is ▁st unted . ▁The ▁tib iae ▁of ▁the ▁h ind ▁legs ▁have ▁four ▁sp urs ▁that ▁are ▁very ▁short ▁in ▁females . ▁ ▁The ▁bright ▁pale - green ▁lar va ▁reaches ▁a ▁length ▁of ▁about ▁ 2 6 ▁mill im eters . ▁It ▁is ▁character ized ▁by ▁a ▁very ▁smooth ▁skin ▁and ▁a ▁flat ▁head . ▁There ▁is ▁a ▁dark ▁green ▁d ors al ▁line ▁and ▁yellow ish - white ▁later al ▁lines . ▁In ▁contrast ▁to ▁other ▁geomet rid ▁c ater p ill ars , ▁they ▁have ▁an ▁additional ▁rud iment ary ▁ab dom inal ▁leg ▁pair ▁in ▁the ▁fifth ▁segment . ▁ ▁The ▁adult s ▁are ▁active ▁in ▁March ▁and ▁April ▁. ▁ ▁The ▁lar va ▁fe eds ▁on ▁a ▁range ▁of ▁trees : ▁Mal us ▁dom est ica , ▁Pr un us ▁dom est ica , ▁Pr un us ▁dom est ica ▁dom est ica , P run us ▁spin osa , ▁Pr un us ▁pad us , ▁Cer as us , ▁T ilia , ▁Qu erc us ▁ro bur , ▁Qu erc us ▁pet ra ea , ▁Qu erc