In synonymy:
Acacesia alticeps Chamberlin & Ivie, 1936 = Acacesia tenella L. Koch, 1871 (Glueck, 1994: 73, sub Acacesia cornigera)
Acacesia cornigera Petrunkevitch, 1925 = Acacesia tenella L. Koch, 1871 (Framenau, Scharff & Levi, 2009: 23)
Acacesia folifera (Marx, 1890) = Acacesia hamata Hentz, 1847 (Bryant, 1945a: 364)
Acacesia hallucinor (Petrunkevitch, 1911, T from Araneus) = Acacesia hamata Hentz, 1847 (Bryant, 1945a: 364)
Acacesia nigrolineata (Caporiacco, 1955) = Acacesia hamata Hentz, 1847 (Glueck, 1994: 70)
Acacesia pentagona Caporiacco, 1954 = Acacesia tenella L. Koch, 1871 (Glueck, 1994: 73, sub Acacesia cornigera)
Acacesia spinulosa Mello-Leitão, 1948 = Acacesia tenella L. Koch, 1871 (Glueck, 1994: 73, sub Acacesia cornigera)
Nomen dubium:
Acacesia peruviana Chamberlin, 1916: 244, pl. 18, f. 6 (f, Peru) -- Glueck, 1994: 73