Key to the Philippine species of Otraleus and Capuyanus gen. nov.

1. Abdominal terga without postero-lateral lobes; females with subgenital plate strongly tapered, projecting over apex of tergum X; males with swollen and conical thornpads on anal segment (genus Capuyanus) ............................................................................. Capuyanus magwilangi sp. nov.

– Abdominal terga with postero-lateral lobes; females with subgenital plate not strongly tapered, not projecting over apex of tergum X; males without swollen and conical thornpads on lower posterior margin of anal segment (genus Otraleus)....................2

2. Elytra and alae present ...................................................................... Otraleus christianae sp. nov.

– Elytra and alae absent...........................................................................................................3

3. Abdominal terga armed with spines or tubercles posteromedially..................................4

– Abdominal terga smooth ......................................................................... Otraleus applai sp. nov.

4. Vertex elongated and slightly conical; meso- and metanotum with a definite, vertical, elongated blunt spine posteromedially ............................................ Otraleus bellemansae sp. nov.

– Vertex not conical; meso- and metanotum at best with a short conical spine posteromedially ... ...................................................................................................... Otraleus elizabethae sp. nov.

Distribution

Currently known from Sulawesi (Indonesia), Borneo (Malaysia: Sabah) and Luzon Island (Philippines).