<i>Pachypsylla venusta</i>, the Hackberry Petiole Gall Psyllid (IMAGE)

University of Arizona

<i>Pachypsylla venusta</i>, the Hackberry Petiole Gall Psyllid

Caption

Hackberry petiole gall psyllid just after emerging from the gall on a hackberry. The leaf is yellow because it is autumn. The insect is only 3 to 4 millimeters long. The insect's only endosymbiotic bacteria, Carsonella ruddii, has the smallest cellular genome known.

Credit

Nancy Moran, The University of Arizona.

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Photo must be used only in connection with a story about the research described in this release. Photo credit must be given as: Nancy Moran, The University of Arizona.

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