Subgenus Merocoris Perty

1833 Merocoris (Merocoris) Perty, 170. Type species: Merocoris tristis Perty, 1833 . By subquent designation.

Merocoris bergi Mayr

1865 Merocoris Bergi Mayr, not specified [new species: Argentina: Buenos Aires]— Berg 1883a, 242 [Argentina: Buenos Aires: Chacabuco]— Pennington 1920, 12 [Argentina: Buenos Aires; Santiago del Estero]— Pennington 1921b, 30 [Argentina: Buenos Aires: Chacabuco].

1954a Merocoris bergi: Kormilev, 158 [Argentina: Buenos Aires: Chacabuco, Rosas, F.C.S.; Santa Fé: Piquete]— Packauskas 2010, 209 [Argentina]—Dellapé and Carpintero 2012, 133 [Argentina: Buenos Aires: Tandil].

Merocoris elevatus (Spinola)

1837 Corynomerus elevatus Spinola, 128 [new species: Brazil]. 1954a Merocoris elevatus: Kormilev, 157 [Argentina: Catamarca; Chaco: Resistencia, Tirol; Corrientes: Santo Tomé; Salta; Santa Fé: Crespo].

Merocoris tristis Perty

1833 Merocoris (Merocoris) tristis Perty, 171 [new species: Brazil]— Packauskas 2010, 210 [Argentina].