▁the ▁lar va e ▁commonly ▁aggregate . ▁The ▁lar va e , ▁like ▁most ▁hem ile uc ines , ▁are ▁covered ▁with ▁u rt ic ating ▁hair s , ▁but ▁these ▁c ater p ill ars ▁possess ▁a ▁uniqu ely ▁pot ent ▁ant ico ag ul ant ▁ven om . ▁ ▁To x icity ▁A ▁typical ▁en ven om ation ▁incident ▁involves ▁a ▁person ▁un know ingly ▁lean ing ▁against , ▁placing ▁their ▁hand ▁on , ▁or ▁rub bing ▁their ▁arm ▁against ▁a ▁group ▁of ▁these ▁c ater p ill ars ▁that ▁are ▁gathered ▁on ▁the ▁tr unk ▁of ▁a ▁tree . ▁The ▁effects ▁of ▁a ▁do se ▁from ▁multiple ▁c ater p ill ars ▁can ▁be ▁dram atic ▁and ▁severe , ▁including ▁massive ▁internal ▁hem or rh aging , ▁kid ney ▁failure , ▁and ▁hem ol ysis . ▁The ▁resulting ▁medical ▁synd rome ▁is ▁sometimes ▁called ▁l onom ias is . ▁Death ▁may ▁result , ▁either ▁rapidly ▁or ▁after ▁many ▁days ▁following ▁en ven om ation . ▁ ▁The ▁ ▁of ▁the ▁L onom ia ▁ven om ▁is ▁ 0 . 1 9   m g ▁for ▁an ▁ 1 8 – 2 0   g ▁mouse ▁( IV ); ▁however , ▁due ▁to ▁the ▁small ▁amount ▁of ▁ven om ▁in ▁the ▁br ist les ▁of ▁the ▁c ater p ill ar , ▁the ▁rate ▁of ▁human ▁fatal ity ▁is ▁only ▁ 1 . 7 %. ▁ ▁While ▁there ▁are ▁more ▁than ▁a ▁dozen ▁species ▁in ▁the ▁genus , ▁the ▁most ▁troubles