pear bedstraw aphid, dysaphis pyri. a colony of wingless individuals under a pear tree leaf

plant leaf flower produce tree food nature branch frost autumn invertebrate wildlife soil shrub wildflower blossom insect fruit pear bedstraw aphid dysaphis pyri colony wingless individuals plague fauna parasitic scale protection pests sharp parasite prickly pears entomology spain hemiptera andalusia biology seed isolated animal fluff luis wilderness green macro summer aphids natural pest garden ant close detail insects group closeup spring botany symbiose suck spread juice black texture graze pyri leaf two parasitized