Gnathocera trivialis Gerstaecker, 1883 (Fig. 22f) Distribution: ANG, DOC, TAN. Distribution in Angola (Provinces): 1) LNO, UIG (?). Historic records: —Muita (Luembe) (LNO) (Gomes Alves 1959 sub G. angolensis trivialis Gerst., Ferreira 1965 sub G. angolensis var. trivialis Gerst.). Material examined: Muita (Luembe) (7º 48´S, 21º 26´E, 700 m alt., 69) (LNO), 6.VI.1948, 4 ♂, 2 ♀, Nº 1125, Junta de Investigações Coloniais (Entomologia), IICT, MUNHAC. Remarks. The species was described for Malimbe in West Africa without references to any particular country, but to von Mechow sendings (Gerstaecker 1883). Malimbe seems to be a village located in the Uíge Province of Angola. Gnathocera trivialis was considered a synonym of G. angolensis (Krajcik 2008a; Schoolmeesters 2018), but Marais & Holm (1992) and more recently Beinhundner (2017a) recognized it as a valid species. The presence of adult specimens of G. angolensis and of G. trivialis in the same date and site in Muita (syntopic) justify the species status of the latter taxon (see also the remarks under G. angolensis). Biological or ecological data are not available for this species.

Published as part of Serrano, Artur R. M., Capela, Rúben A., Nunes, Telmo & Santos, Carmen Van-Dú- Nem Neto, 2020, The rose chafers (Coleoptera: Scarabaeidae: Cetoniinae) of Angola: a descriptive checklist with new records and synonymic notes, pp. 1-130 in Zootaxa 4776 (1) on pages 96-97, DOI: 10.11646/zootaxa.4776.1.1, http://zenodo.org/record/3821288