Gnathocera marginata Janson, 1885

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

Gnathocera marginata Janson, 1885

( Figs. 22c, d )

Distribution: ANG, CON.

Distribution in Angola (Provinces): 1) LNO.

Historic records:

—Dundo (LNO) [ Gomes Alves 1959 and Ferreira 1965 sub Gnathocera (Gnathocerida) marginata ssp.].

Material examined: Angola, 1 ♂, Nº 1907 (blue label), old collection, box nº XIV-83, MZUC; Dundo (7º 22´S, 20º 50´E, 1470 m alt., 51) ( LNO), 2.V.1946 , 1 ♂, Nº 655, Junta de Investigações Coloniais , IICT, MUHNAC .

Remarks. The species was described originally from “ Congo District, West Africa” ( Janson 1885) nowadays Congo-Brazaville, where it seems common ( Allard 1991). The species was recorded by Gomes Alves (1959) under the subgenus Gnathocerida Péringuey, 1907 for LNO in Angola. According to Holm & Marais (1992) “there are several Gnathocerida species” which “apparently differ only in details of colouration, and may turn out to form a subspecies cline [e.g. G. villosa (Janson) ; G. pubescens (Janson) ; G. marginata (Janson) ; G. bourgoini Burgeon ; and G. overlaeti Burgeon ]”. 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.