Polycaoninae, Lesne, 1896

Zhang, Yi-Feng, Meng, Ling-Zeng & Beaver, Roger A., 2022, A review of the non-lyctine powder-post beetles of Yunnan (China) with a new genus and new species (Coleoptera: Bostrichidae), Zootaxa 5091 (4), pp. 501-545 : 506

Key to species of subfamily Polycaoninae

1 Elytral declivity distinctly carinately bordered ( Fig. 4 )............................. … Melalgus batillus (Lesne, 1902)

. Elytral declivity indistinct, without bordering carinae ( Fig. 5 ).......................... Melalgus feanus (Lesne, 1899)

Figures

FIGURE 4. (A, B) Lateral (A) and dorsal (B) views of Melalgus batillus (Lesne, 1902) (♂). Total horizontal scale bar = 1mm.

FIGURE 5. (A, B) Lateral (A) and dorsal (B) views of Melalgus feanus (Lesne, 1899) (♂). Total horizontal scale bar = 1mm.