Pachypsylla celtidisgemma

Hackberry bud gall psyllid. Austin, Texas, USA.

Pachypsylla sp.

A Hackberry psyllid poses on a spring bud of its host plant. Note the insect's eggs lodged in the plant's tissue- the young psyllids will form galls in the leaf tissue.

Pachypsylla

A spring aggregation of hackberry psyllids feeds and lays eggs on a host plant. Austin, Texas, USA.

Pachypsylla sp.

An adult hackberry gall psyllid on its host plant. Brackenridge Field Laboratory, Texas, USA.

Aphalaridae

Jumping plant louse. Diamond Creek, Victoria, Australia.

Baeoalitriozus diospyri

Persimmon psyllid. Falls State Park, Georgia, USA.

Baeoalitriozus diospyri

A mating pair of persimmon psyllids and a third wheel on a Texas persimmon tree. Brackenridge Field Laboratory, Texas, USA.

Glycaspis

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

Glycaspis

This waxy tangle is called a lerp, made by exudates of the eucalyptus lerp psyllid. Victoria, Australia

Glycaspis

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

Woolly Aphid

Urbana, Illinois, USA.

Eriosoma americanum

A pseudo-gall made by woolly elm aphids. Austin, Texas, USA.

Eriosoma americanum

Woolly elm aphids. Austin, Texas, USA.

Geopemphigus

The bizarre gall on this Texas pistacio leaf conceals a small colony of woolly aphids. Langtry, Texas, USA.

Geopemphigus

This bizarre gall on a Texas pistacio leaf is caused by a colony of wooly aphids. Langtry, Texas, USA.

Geopemphigus

Pulling apart the sides of a pistacio leaf gall reveals a small colony of woolly aphids. Langtry, Texas, USA.

Geopemphigus

Woolly aphid. Langtry, Texas USA.

Geopemphigus

Pistacio leaf galls. Langtry, Texas, USA.

Geopemphigus

Langtry, Texas, USA.

Geopemphigus

Inside a pistacio leaf gall, showing live woolly aphids, excess honeydew, and shed exuviae. Langtry, Texas, USA.

Macrosiphum

The sex lives of aphids during most of the year are unusually dull: female aphids are parthenogenetic, cloning themselves without mating at all. This strategy allows aphids to build their numbers very quickly. Sexual reproduction occurs at the end of the season, after winged forms are produced. Tucson, Arizona, USA.

Macrosiphum rosae

Rose aphids. Tucson, Arizona, 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

Aphis glycines

Soybean aphid Urbana, Illinois, USA