Pachypsylla

Halbert, Susan E. & Burckhardt, Daniel, 2020, The psyllids (Hemiptera: Psylloidea) of Florida: newly established and rarely collected taxa and checklist, Insecta Mundi 2020 (788), pp. 1-88 : 22-23

Key to Florida species of Pachypsylla

(Mostly from Tuthill 1943 with minor changes)

1. Head and thoracic dorsum with short stiff pubescence, not shining. Cells m 1 and cu 1 of forewing very elongate; forewing not rugose.......................................................... 2

— Head and thorax appearing glabrous, shining (often with sparse, fine pubescence). Cells m 1 and cu 1 of forewing less elongate, broad; forewing more or less rugose................................ 4

2(1). Large species: length to tip of folded forewings> 5.5 mm ................. P. venusta Osten-Sacken

— Smaller species: length to tip of folded forewings <4.0 mm.................................... 3

3(2). Body length to tip of folded forewings> 3.0 mm................ P. celtidismamma (Riley) complex

— Body length to tip of folded forewings <2.5 mm .......................... P. celtidisvesicula Riley

4(1). Forewings uniformly brown............................................ P. celtidisgemma Riley

— Forewings maculate................................................. P. celtidisinteneris Mally