Pachypsylla is a genus of North American psyllids. Species of the genus Pachypsylla lay eggs on the leaves of the Celtis occidentalis tree. Upon hatching, the young psyllids become encased in a gall which the young leaf parts grow in response to the infestation.
GENUS
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Pachypsylla is a genus of North American psyllids. Species of the genus Pachypsylla lay eggs on the leaves of the Celtis occidentalis tree. Upon hatching, the young psyllids become encased in a gall which the young leaf parts grow in response to the infestation.
==Species== The following species are recognised in the genus Pachypsylla: Pachypsylla celtidisasterisca Riley, 1890 Pachypsylla celtidiscucurbita Riley, 1890 Pachypsylla celtidisgemma Riley, 1885 – hackberry bud gall maker Pachypsylla celtidisglobula Riley, 1890 Pachypsylla celtidisinteneris Mally, 1894 Pachypsylla celtidismamma (Riley, 1881) – hackberry nipplegall maker Pachypsylla celtidispubescens Riley, 1890 Pachypsylla celtidisumbilicus Riley, 1890 Pachypsylla celtidisvesicula Riley, 1890 – hackberry blistergall psyllid Pachypsylla cohabitans Yang & Riemann, 2001 Pachypsylla dubia Patch, 1912 Pachypsylla pallida Patch, 1912 Pachypsylla tropicala Caldwell, 1944 Pachypsylla venusta (Osten-Sacken, 1861) – petiolegall psyllid
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