Key to species of Pectinimura in New Guinea

1. Hindwing with M2 present............................................................................. 2

- Hindwing with M2 absent............................................................................... 6

2. Forewing ground color pale orange to light orange........................................................... 3

- Forewing ground color grayish........................................................................... 4

3. Forewing length more than 10 mm; discal stigmata conspicuous; valva of male genitalia with parallel margin................................................................................................ lutescens (Diakonoff)

- Forewing length less than 8 mm; discal stigmata ill-defined; valva of male genitalia with strongly arched costa................................................................................................ baryoma (Diakonoff)

4. Forewing with orange white band along costa.......................................... gilvicostata Park, sp. nov.

- Forewing without such band along costa.................................................................. 5

5. Forewing with conspicuous discal stigmata; male genitalia with cornutus consisting of a large patch of numerous spines and short teeth....................................................................... rahbdostoma (Diakonoff)

- Forewing with small, inconspicuous discal stigmata; male genitalia with a large spinelike cornutus … singularis Park, sp. nov.

6. Forewing ground color grayish white or brownsih, evenly covered with dark brown scales; antenna with almost uniform col- ored flagellum; labial palpus strongly recurved, with slender, 3rd segment as long as 2nd or longer...................... 7

- Forewing ground color pale orange, with conspicuous postmedian fascia; antenna dark brown in basal part of flagellum; labial palpus not strongly recurved, with more or less stout, 3rd segment porrect........................ areola Park, sp. nov.

7. Forewing grayish, with paler band along costa; forewing length less than 6.0 mm; male genitalia with subapical process on teg- ument, valva elongate............................................................. brahmanica Park, sp. nov.

- Forewing more or less brownish, uniformly colored without paler band along costa; forewing length more than 8.0 mm; male genitalia without subapical process on tegumen; valva broad................................... liberalis (Diakonoff)