by Elio — Antlions are in­sects, rel­a­tives of the lacewings, that snare ants by mak­ing con­i­cal pits in loose sand. An un­wary ant or other in­sect slips down the treach­er­ous slope, to be met by a par­tially buried antlion larva that is ea­ger and ready to suck it dry. To en­sure that the prey...