The type specimens of the New World Stigmoderini deposited in the Natural History Museum in London are catalogued and illustrated. Twenty-eight lectotypes are designated, one of which is a new lectotype, since the previous one is considered invalid under the article 74.2. (ICZN 1999). Holotype and in some cases, paratypes, are recognized for the following taxa: Conognatha nanula Hoscheck, 1934, Conognatha blairi Hoscheck, 1934, Hiperantha decorata var. insignata Hoscheck, 1928 and Hiperantha saundersi Théry, 1928. In addition, Lasionota oberthuri (Kerremans, 1897) rev. stat. is reinstated as a valid species, having been considered to be a junior synonym of Lasionota tetrazonus (Chevrolat, 1838) since 1997. The comparison of the reinstated species, with the recently described species Lasionota inca Moore Diéguez, 2019 showed that both are conspecific and hence L. inca syn. nov. is proposed as a junior synonym of L. oberthuri.