Key for the known larvae of Procloeon (Procloeon) in the Oriental region

1. Hind wing pads present; maxillary palp 3-segmented; gill VI with dorsal lamellae.................................. 2

- Hind wing pads absent; maxillary palp 2-segmented; gill VI without dorsal lamellae........... Procloeon (P.) narumonae

2. Dorsal lamellae of gill V and VI normal................................................................... 3

- Dorsal lamellae of gill V and VI rudimentary.............................................. Procloeon (P.) tatualis

3. Maxillary palp terminal segment ca. 1/2× length of segment II.................................................. 4

- Maxillary palp terminal segment ca. 1/3× length of segment II............................... Procloeon (P.) spinosum

4. Terga III and VI with one pair of white streaks on anterior margin submedially; posterior margin of tergum I with blunt teeth............................................................................. Procloeon (P.) rubeosternum

- Terga III and VI without white streaks on anterior margin submedially; posterior margin of tergum I with acute teeth……........................................................................ Procloeon (P.) kottagudiensis sp. nov.