Insects and pests

Spider mites are arachnids, a gro…

Spongy moths, formerly known as gypsy moths, are voracious feeders. A fully-grown larva can consume as much as o…

Larvae of spongy moth, formerly known as gypsy moth, feed on the foliage of a wide variety of woody plants. Duri…

Spotted lanternfly (SLF), Lycorma delicatula, is an invasive planthopper that w…

Spruce bud scale is an insect usually found on Norway spruce, but will also attack blue spruce and other spruce speci…

The Eastern spruce gall adelgid (Adelgis abietis) and the Cooley spruce gall adelgid (Adelgis cooleyi

The sycamore borer, which commonly attacks species of oak, sycamore, and Ceanothus (California lilac), is fo…