nigripennis (Holmgren) Rhygchium nigripenne Holmgren 1868: 441, sex not stated—“Honolulu” (Stockholm). Odynerus maurus Smith 1879a: 679, female, male—“Honolulu” (London, no. 18.353); 1879b: 135 (Honolulu; as new species).— Blackburn & Kirby 1880: 86. Odynerus nigripennis; Blackburn & Cameron 1886: 151 (syn.: O. maurus Smith; Honolulu); 1887: 210.— Dalla Torre 1894: 82 (cat.).— Perkins 1899: 70 (from Oahu to Hawaii); 1901: 267 (key); 1902: 131 (key).— Alfken 1904: 574 (Oahu).— Dalla Torre 1904: 50 (cat.).— Swezey 1906: 16 (Hawaii; prey).— Perkins, 1906a: 43; 1906b: 61, 64, 69 (Hawaiian Is.).— Swezey 1907a: 86 (Maui).— Perkins 1907: 97 (Hawaii).— Swezey 1907b: 122–123 (parasites); 1907c: 50–53 (prey: Omiodes accepta, Hymenia recurval...