av engers . ▁Fem ales ▁search ▁out ▁sn ails ▁for ▁ov ip osition . ▁Kn own ▁Od ini idae ▁lar va e ▁live ▁in ▁the ▁t unn els ▁of ▁wood - bor ing ▁lar va e ▁of ▁Cole optera , ▁Le pid optera , ▁and ▁other ▁D ip tera ▁and ▁function ▁as ▁sc av engers ▁or ▁pred ators ▁of ▁the ▁host ▁lar va e . ▁O ed op ar ena ▁lar va e ▁feed ▁on ▁bar n acles . ▁The ▁lar va e ▁of ▁Ac ro cer idae ▁and ▁some ▁Bom by li idae ▁are ▁hyper met am orph ic . ▁ ▁Mil ichi idae ▁especially ▁Pho le omy ia ▁and ▁Mil ich iella ▁Mil ichi idae ▁are ▁kle ptop ar as ites ▁of ▁pre dat ory ▁in verte br ates , ▁and ▁accordingly ▁are ▁commonly ▁known ▁as ▁fre elo ader ▁f lies ▁or ▁jack al ▁f lies . ▁ ▁Ant ▁associ ates ▁St y log astr ines ▁are ▁oblig ate ▁associ ates ▁of ▁some ▁Orth optera , ▁other ▁D ip tera ▁and ▁an ts . ▁These ▁f lies ▁typically ▁use ▁army ▁an ts ' ▁ra iding ▁columns ▁to ▁flush ▁out ▁their ▁pre y , ▁ground - d well ing ▁Orth optera . ▁Many ▁species ▁of ▁Ph or idae ▁are ▁special ist ▁par as ito ids ▁of ▁an ts , ▁but ▁there ▁are ▁also ▁species ▁in ▁the ▁trop ics ▁that ▁are ▁par as ito ids ▁of ▁st ing less ▁be es . ▁These ▁affected ▁be es ▁are ▁often ▁host ▁to ▁more ▁than ▁one