Melanoplus differentialis

A differential grasshopper. Rumley, Texas, USA.

Aleyrodidae

Citrus whitefly on a cultivated lemon leaf. Austin, Texas, USA.

Acyrthosiphon pisum

Pea aphids. Davis, California, USA

Melanaphis sacchari

Sugarcane aphids are an introduced pest of many grasses in the southeastern United States. Austin, Texas, USA.

Sitobion avenae - English grain aphid

An alate aphid with her newborns on the underside of a pipevine leaf. (Thanks to Katelyn Kowles for the identification) Urbana, Illinois, USA

Acyrthosiphon pisum

Pink and green color morphs of the pea aphid, Acyrthosiphon pisum. A single genetic locus controls the polymorphism. Laboratory colony at The University of Texas at Austin.

Schizaphis graminum

A wheat aphid on switchgrass. Laboratory colony at The University of Texas at Austin.

Myzocallis

A winged adult aphid feeds from an oak leaf. Brackenridge Field Lab, Texas, USA.

Aphis fabae

Black bean aphids. Laboratory colony at The University of Texas at Austin.

Glycaspis

Encased in a shelter of waxy exudate, a lerp psyllid feeds from a Eucalyptus leaf. Yandoit, Victoria, Australia.

Glycaspis

A eucalyptus lerp psyllid is revealed by removing its protective waxy tent. Victoria, Australia

Ground pearls are the large, sedentary adult forms of root-sap feeding insects. Here, two Eurhizococcus brasiliensis hang suspended from grape roots deep underground while a Linepithema micans ant gathers the honeydew exuded by the pearls. These insects are significant pests in Brazilian vineyards. Bento Gonçalves, Rio Grande do Sul, Brazil

Planococcus citri

Planococcus citri, the citrus mealybug, is an important sap-feeding pest insect in tropical climates worldwide.

Adelges tsugae - Hemlock Woolly Adelgid

The Hemlock Woolly Adelgid is an Asian sap-feeding insect that has caused significant declines of hemlock trees in eastern North America. Gatlinburg, Tennessee, USA.

Adelges tsugae - Hemlock Woolly Adelgid

The Hemlock Woolly Adelgid is an Asian sap-feeding insect that has caused significant declines of hemlock trees in eastern North America. Gatlinburg, Tennessee, USA.

Baeoalitriozus diospyri

Persimmon psyllid. Falls State Park, Georgia, USA.

Scaphytopius acutus

A yellow-faced leafhopper feeds from milkweed, its beak inserted into the plant's tissues. Urbana, Illinois, USA.

Graphocephala coccinea

Red-banded leafhopper. Austin, Texas, USA.

Empoasca

Austin, Texas, USA.

Homalodisca vitripennis - Glassy-winged sharpshooter

The white dots on the wings of this sharpshooter are a liquid containing microscopic structures called brochosomes. The insect paints these on her eggs where they may serve to protect against dessication or predation. Austin, Texas, USA.

Homalodisca vitripennis

The glassy-winged sharpshooter, one of our largest North American leafhoppers, is an important vector of plant pathogens. Austin, Texas, USA.

Oncometopia orbona

Broad-headed sharpshooter. Stengl Lost Pines Biological Station, Texas, USA.

Petrusa epilepsis

The sea grape flatid is a common pest of ornamental plants in the Caribbean. Rio Grande, Puerto Rico.