▁ 1 9 8 5 ▁and ▁Alabama ▁in ▁ 1 9 9 6 . ▁ ▁Based ▁on ▁its ▁South ▁American ▁range , ▁it ▁appears ▁that ▁G . ▁tri angular is ▁has ▁the ▁potential ▁to ▁spread ▁to ▁for ests ▁throughout ▁much ▁of ▁the ▁sout he astern ▁United ▁States . ▁There ▁are ▁no ▁documented ▁impact s ▁of ▁G . ▁tri angular is , ▁and ▁it ▁seems ▁unlikely ▁that ▁this ▁species ▁will ▁ever ▁become ▁a ▁major ▁p est . ▁ ▁Tax onomy ▁G . ▁tri angular is ▁was ▁originally ▁described ▁by ▁May r ▁as ▁E ct atom ma ▁tri ang ul are ▁in ▁Uruguay ▁in ▁ 1 8 8 7 . ▁Junior ▁syn onym s ▁include ▁E ct atom ma ▁tri ang ul are ▁rich ter i , ▁described ▁in ▁ 1 9 1 3 ▁in ▁Argentina ▁and ▁E ct atom ma ▁ac ule at ico x ae , ▁described ▁from ▁Ha ute ▁Car se ven ne , ▁French ▁Gu iana ▁in ▁ 1 9 2 1 ▁( now ▁Al to ▁Rio ▁Cal ço ene , ▁Brazil ). ▁ ▁Description ▁G nam pt ogen ys ▁tri angular is ▁is ▁a ▁relatively ▁large , ▁black ▁ant ▁with ▁more ▁re dd ish ▁legs ▁that ▁is ▁character ized ▁by ▁deep ▁longitud inal ▁gro ov es ▁and ▁rid ges ▁that ▁the ▁run ▁the ▁lengths ▁of ▁the ▁head , ▁mes os oma ▁and ▁g aster . ▁Little ▁is ▁known ▁about ▁the ▁e col ogy ▁of ▁the ▁ant , ▁other ▁than ▁that ▁it ▁is ▁believed ▁to ▁be ▁a ▁mill ip ede ▁special