They are medium-sized moths, the adults having a wingspan of. The wings are usually dark with lighter patches, while the body is often aposematically coloured to discourage birds and other visual predators from eating them. Palpi porrectly upturned. Antennae bipectinate in both sexes, where branches short in females. Forewing with vein 3 from before the angle of cell, vein 5 from above it and vein 6 from upper angle. Vein 7 and 10 from short areole which is formed by the anastomosis of veins 8 and 9. Hindwings with vein 3 from before end of cell and vein 5 from angle or from above it. Veins 6 and 7 stalked or from upper angle. Vein 8 from before middle of all.
Ecology
The slow-flying moths can often be seen feeding at flowers; it is common around its preferred food plants of the daisy family, for example groundsel, ragworts and Cineraria. The colourful hairy larvae feed openly on the plants, often stripping off all the leaves. The mature larvae will sometimes wander from the plant to pupate. The loosely spun cocoon incorporates some of the larval hairs and may also be found amongst leaves.
Taxonomy
Several species formerly placed here are now assigned to other genera. These include Utetheisa, the revalidated Chiromachla, Podomachla and Xylecata, and the newly established Afronyctemera.
Afrotropical species transferred into ''Podomachla'' Strand, 1909
Nyctemera acraeina
Nyctemera antinorii
Nyctemera apicalis
Nyctemera arieticornis
Nyctemera chromis
Nyctemera insularis
Nyctemera usambarae
Nyctemera virgo
Afrotropical species transferred into ''Xylecata'' Swinhoe, 1904
Nyctemera biformis
Nyctemera crassiantennata
Nyctemera druna
Nyctemera glauce
Nyctemera hemixantha
Nyctemera rattrayi
Nyctemera ugandicola
Nyctemera uniformis
Nyctemera xanthura
Main articles on ''Nyctemera'' taxonomy
1994 : Nyctemera groenendaeli spec. nov. from New Guinea. Nachrichten des Entomologischen Vereins Apollo, N.F.15 : 481–489.
1995: A revision of Nyctemera consobrina with redescription of three subspecies. Nachrichten des Entomologischen Vereins Apollo, N.F.16 : 81–93.
1996: Nyctemera pseudokala sp. nov. and N. mastrigti sp. nov., two new species from Indonesia. Nachrichten des Entomologischen Vereins Apollo, N.F.17 : 301–311.
1997: A revision of Nyctemera kebeae and N. warmasina . Nachrichten des Entomologischen Vereins Apollo, N.F.18 : 1-12.
1997: The identity of Nyctemera simulatrix Walker, 1864. Nachrichten des Entomologischen Vereins Apollo, N.F.18 : 205–210.
2002: Revision of the Nyctemera evergista group . Nachrichten des Entomologischen Vereins Apollo, N.F.23 : 7-32.
2007: Revision of the Nyctemera clathratum complex. Tijdschrift voor Entomologie150: 39–54.
2007: The Utetheisa species of the subgenera Pitasila, Atasca and Raanya subgen. n.. Aldrovandia3: 31-120.
2010: Nyctemerini. In:, Tiger-moths of Eurasia. Neue Entomologische Nachrichten65: 11–18.
2006: On the generic status of the Afrotropical Nyctemera species. Atalanta37 : 191–205.