Chrysodema, Sonnerati Laporte de Castelnau & Gory, 1835

Frank, David & Sekerka, Lukáš, 2020, Studies on the genus Chrysodema (Coleoptera: Buprestidae: Chrysochroinae) part I., Zootaxa 4720 (1), pp. 1-62 : 7

Key to subgenera of Chrysodema

1 Principal impressions (a) small to moderately large ( Figs 96–97, 102–103 ), not reaching lateral margin of pronotum, sometimes only linear or nearly absent ( Figs 100–101 )................................................................. 2

- Principal impressions (a) large and rounded, reaching to lateral margin of pronotum, which forms a sharp carina (e) ( Figs 98–99 ).................................................................. Pseudochrysodema Saunders, 1874

2 Basal impressions of pronotum absent ( Figs 96, 100 )......................................................... 3

- Pronotum with subtriangular, deep and sharply cut basal impression (d) on each side situated approximately at 1/7 width of basal side ( Fig. 102 )............................................................... Gelaeus Waterhouse, 1905

3 Pronotum without principal impressions or only weakly indicated, medial line absent to weakly indicated, medial impressions absent ( Fig. 100 ); costae on elytra weak, often only indicated or not clearly visible........... Thymedes Waterhouse, 1905

- Pronotum with distinct principal impressions (a) and usually with medial line as well as medial impressions (b), however, the latter can be very shallow or partly reduced ( Figs 96–97 ); costae on elytra usually clearly visible..................................................................................... Chrysodema Laporte de Castelnau & Gory, 1835

Figures

FIGURES 96–103. Chrysodema, structure of pronotum. 96–97 C. (C.) mniszechii Deyrolle, 1864; 98–99 C. (Pseudochrysodema) coelestina Obenberger, 1922; 100–101 C. (Thymedes) flavicornis Saunders, 1874; 102–103 C. (Gelaeus) walkeri bilyi Frank & Sekerka, 2016; 96, 98, 100, 102—pronotum dorsal; 97, 99, 101, 103—pronotum lateral; a—principal impression, b—medial impression, c—lateral impression, d—basal impression, e—carinate margin.