Gnathocera trivialis Gerstaecker, 1883

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, Zootaxa 4776 (1), pp. 1-130 : 96-97

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.

Figures

FIGURE 22. Cetoniinae species of Angola. a, Gnathocera cruda gracilis (dorsal view), male, MZUC; b, Gnathocera cruda leopoldi (dorsal view), male, MZUC; c and d, Gnathocera marginata (dorsal views), males, MZUC and Dundo, LNO, IICT, respectively; e, Gnathocera overlaeti (dorsal view), male, Dundo, LNO, IICT; f, Gnathocera trivialis (dorsal view), male, Muita, LNO, IICT; g and h, Gnathocera trivittata ardoini (dorsal views), male and female, respectively, Dundo, LNO, IICT; i, Gnathocera trivittata dorsodiscolor (dorsal view), male, MZUC.