gypsy moth or spongy moth caterpillar, the head

gypsy moth spongy lymantria dispar erebidae lepidopteran caterpillar larvae polyphagous defoliator invasive species deciduous tree coniferous forest shrub european terni umbria italy grow growing grows molt instars five pairs blue spots six brick red raised backs setae head black daylight sunlight back ground branch macro portrait outdoor zoology enthomology entomologist insect metamorphosys diffusion voracious pests larva