Key to species of Conidera

1. Labrum strongly protruded in middle, its median length more than twice its lateral length (Fig. 5); each elytron rounded posteriorly; sutural spine shifted anteriorly, in female much stronger than in male (Fig. 8, 9); medium-sized species, body length 9.7–11.1 mm; locality from Mindoro (and Mindanao?)............................................................................ Cylindera (Conidera) mindoroana Zettel and Wiesner, new species

— Labrum weakly protruded in middle, its median length at most 1.6 times its lateral length (Fig. 6, 7); elytron not or hardly rounded posteriorly, truncated in female; sutural spine normal, at apex of elytron (Fig. 10–13); locality from Luzon................................... 2

2(1). Labrum with small medial tooth (Fig. 7); sides of clypeus glabrous; small species, body length 7–8 mm ................................. Cy. (Co.) mandibularis (Schaum, 1860)

— Labrum lacks medial tooth (Fig. 6); sides of clypeus setose; large species, body length 11– 12.5 mm ..................................... Cy. (Co.) conicollis (Schaum, 1862)