Phytocoris longipennis Flor, 1861: 593, 601. STS: 2 female, Latvia, Kokenhusen [= Koknese]; IZBE?
Phytocoris populi (non Linnaeus, 1758): Kirschbaum, 1856: 198. Misidentification (see Reuter, 1875g: 40; Wagner, 1939b: 39).
Phytocoris dimidiatus (non Kirschbaum, 1856): Fieber, 1861a: 260. Misidentification (see Reuter, 1875g: 40).
Phytocoris longipennis var. decolorata Reuter, 1875g: 40. For f. typica.
Phytocoris longipennis var. signata Reuter, 1875g: 40 (junior primary homonym of Phytocoris tiliae var. signatus Reuter, 1875). STS: no material indicated, but many references given to earlier works.
Phytocoris longipennis var. pallida Reuter, 1877c: 16. For f. typica.
Phytocoris longipennis var. grisescens J. Sahlberg, 1920: 113. LT (Kerzhner, 1997d: 117): female, Finland, Jyväskylä; UZMT.
Phytocoris longipennis f. nigrosignata Stichel, 1958a: 847. New name for var. signata Reuter, 1875.