Chartergus Lepeletier

Somavilla, Alexandre, Aragão, Marcos, Barroso, Paulo Cézar Salgado, Carpenter, James M. & Menezes, Rodolpho Santos Telles, 2024, Taxonomic account and phylogenetic relationships of the species of the Neotropical social wasp genus Chartergus Lepeletier, 1836 (Vespidae: Polistinae: Epiponini), Zootaxa 5418 (3), pp. 279-290 : 287

Identification key for species of Chartergus Lepeletier (adapted from Richards 1978)

1. Central tubercle of metanotum very weak, often hardly noticeable ( Fig. 2B, E ); pronotum black, without anterior color band ( Fig. 2A, B, E, F ), prominence near ventral corner shorter and less acute but often more raised; metanotum with a pale band across the top half, rarely partly black.......................................... C. globiventris de Saussure, 1854

1’. Central tubercle of metanotum stronger ( Fig. 1B , 3B ); pronotum with anterior yellow band ( Fig. 1 A, B , 3 E, F ); metanotum nearly always entirely black or as above................................................................... 2

2. Metanotum nearly always entirely black or with small yellow spots on the sides; pronotum with anterior whitish yellow band, usually incomplete and stronger in the middle ( Fig. 3 E, F ); scrobal furrow with more or less regular cross-keels.................................................................................... C. metanotalis Richards, 1978

2. Metanotum with a pale band across the top half, rarely partly black here; pronotum with a complete anterior pale band ( Fig. 1 A, B ); scrobal furrow with less regular and usually weaker cross-keels........................ C. artifex (Christ, 1791)

Figures

FIGURE 1. Chartergus artifex (Christ, 1791)—A: lateral view. B: dorsal view. C: face, frontal view. D: nest. Holotype of Chartergus tuberculatus [currently Chartergus artifex]—E: lateral. F: dorsal. G: original label.

FIGURE 2. Chartergus globiventris de Saussure, 1854—A: lateral view. B: dorsal view.C: face, frontal view. D: nest. Holotype of Chartergus globiventris—E: lateral. F: dorsal. G: gaster, dorsal view. H: original label.

FIGURE 3. Chartergus metanotalis Richards, 1978—A: lateral view. B: dorsal view. C: face, frontal view. D: nest. Paratype of Chartergus metanotalis—E: lateral. F: dorsal. G: original label.