Key to species of Buprestis subgenus Akiyamaia

1. Elytra monochromatic without bright stripes or spots......................................................... 2

- Elytra bicolorous with bright stripes or spots................................................................ 4

2. Each elytron with five costae (as Fig. 7A, D)............................................................... 3

- Each elytron with eight costae (Fig. 9C–D).................................. B. (A.) intercostata Huang & Pan, 2015

3. Whole pronotum metallic green with a depression along midline (Fig. 6A); abdominal surface with significantly longer and denser pubescence (Fig. 6C)................................................. B. (A.) costipennis (Fairmaire, 1891)

- Pronotum metallic green with lateral sides purple-red and with a costa along midline (Fig. 7A, D); abdominal surface with shorter and sparser pubescence (Fig. 7C, F)............................... B. (A.) samanthae (Hattori & Tanaka, 2007)

4. Each elytron with one continuous stripe....................................................................5

- Each elytron with two or more discontinuous stripes or spots................................................... 6

5. Terminal antennomere without an obvious notch at tip (Fig. 2M–N); elytra mostly metallic green with a pair of brownish red stripes (Fig. 1D, H).......................................................... B. (A.) lebisi Descarpentries, 1956

- Terminal antennomere deeply triangularly notched at tip (Fig. 2C–D); elytra mostly metallic red with a pair of metallic blue stripes (Fig. 1A)...................................................... B. (A.) gengmini Qi & Song, new species

6. Frons with sparse short white setae (Fig. 5E); lateral depressions of pronotum deep and obvious (Fig. 5E); the sutural angle of elytron almost not extended (Fig. 5F)............................................ B. (A.) mirabilis Kurosawa, 1969

- Frons with dense long white setae (Fig. 5G); lateral depressions of pronotum shallow and not obvious (Fig. 5G); the sutural angle of elytron markedly extended (Fig. 5H).................................. B. (A.) wenii Qi & Song, new species