Capsus mollis Mulsant & Rey, 1852: 122. STS: France, Lyon; lost.
Lygaeus roseus (non Fabricius, 1777, part.): Fallén, 1807: 89. Misidentification (see Reuter, 1873: 21; Puton, 1875a: 43).
Capsus diminutus Kirschbaum, 1856: 256, 330 (syn. Rieger, 1981b: 92). LT (Rieger, 1981b: 92): male, Germany, Wiesbaden; MWNH.
Psallus convexus Reuter, 1875e: 52, 1875j: 540 (syn. Reuter, 1878a: 140). STS: France, Corsica; MNHN?, MZHF?
Psallus diminutus f. signata Stichel, 1933: 269. For var. β in Reuter, 1878a: 141.
Psallus diminutus f. rubra Stichel, 1933: 269 (junior primary homonym of Psallus variabilis f. rubra Stichel, 1933). For var. γ in Reuter, 1878a: 141.
Psallus masseei Woodroffe, 1957b: 264, 269 (syn. Kerzhner, 1964b: 757). HT: male, Great Britain, Lanks., Sawrey; BMNH.
Psallus diminutus f. rubescens Stichel, 1958a: 812. New name for f. rubra Stichel, 1933.