one bright red milkweed beetle on a milkweed leaf - tetraopes tetrophthalmus

bright red milkweed beetles matingon leaf etraopes tetrophthalmus tetraopes beetle family cerambycidae herbivore name generally host specific plants genus asclepias startled shrill noise interacting 39aph39purring39aph39 black coloring aposematic advertising beetles39aph39 inedibility milkweedeating species insect use toxins contained plant chemical defense lay eggclutches midsummer roots one spotted chewed