Pachypsylla celtidisgemma

Pachypsylla celtidisinteneris

Pachypsylla celtidismamma

Pachypsylla celtidisvesicula

Pachypsylla venusta

Pachypsylla celtidisgemma Riley, 1885

Diagnosis. Galls are formed from the buds (Tuthill 1943). They protrude from the stems.
Distribution. Widely distributed in the eastern USA (Hodkinson 1988).
Host plants. Celtis occidentalis L. (Cannabaceae).

Pachypsylla celtidisinteneris Mally, 1894
Diagnosis. Galls are formed under the bark (Tuthill 1943).
Distribution. USA: IL, KS, OH (Hodkinson 1988).
Host plants. Celtis sp. (Cannabaceae).

Pachypsylla celtidismamma (Riley, 1875)

Diagnosis. Pachypsylla  celtidismamma sensu Tuthill (1943) is a complex of closely related species with similar adult morphology but strongly differing gall shapes.
Distribution. Widely distributed in eastern and central North America, adventive in CA (Percy et al. 2012).
Host plants. Celtis laevigata Willd., C . occidentalis L. (Cannabaceae).

Pachypsylla celtidisvesicula Riley, 1890

Diagnosis. Galls are blister-like (Tuthill 1943).
Distribution. Widely distributed in the eastern and central North America, adventive in CA (Percy et al. 2012).
Host plants. Celtis laevigata Willd.

Pachypsylla venusta (Osten-Saken, 1861)

Diagnosis. This species is easy to recognize, because it is relatively much larger than the others. It makes large galls in the petioles of the leaves.
Distribution. Widely distributed in the eastern and central USA (Hodkinson 1988).
Host plants. Celtis laevigata Willd., C. occidentalis L. (Cannabaceae)

The psyllids (Hemiptera: Psylloidea) of Florida: newly established and rarely collected taxa and checklist and rarely collected taxa and chec