Diduga, Moore, 1887

Bayarsaikhan, Ulziijargal, Lee, Dong ˗ June & Bae, Yang ˗ Seop, 2018, Three new species of Diduga Moore, [1887] (Lepidoptera, Erebidae, Arctiinae) from Cambodia, Zootaxa 4514 (3), pp. 411-424 : 412

Key to the species of the genus Diduga in Cambodia based on the external morphology

1. Forewing dark brown ground color, with deep yellow margins along the costa and distally............................ 2

- Forewing dark brown ground color, without deep yellow margins along the costa and distally......................... 7

2. Forewing with yellow margins along basal to termen, which lower edge of margins not rugged.............. D. amoenusa

- Forewing with yellow margins along costa and termen, which lower edge of margins rugged.......................... 3

3. Brown part of forewing irregularly “Z” or “S”˗shaped; hindwing gray, slightly tinged with pale brown.................. 4

- Brown part of forewing irregularly triangular; hindwing brown................................................. 5

4. Brown part of forewing more slender; hind border of deep yellow costal margin one time strongly angled in medially; covered with dark brown dots in apical and terminal margin................................................... D. barlowi

- Brown part of forewing broader; hind border of deep yellow costal margin two times weakly angled in medially and basally; several dark brown dots in apical margin.................................................... D. bispinosa n. sp.

5. Hindwing with a dark brown patch of androconia................................................... D. albicosta

- Hind wing without a dark brown patch of androconia......................................................... 6

6. Hind border of deep yellow margins with deep angle in apical area and tornus; hindwing dark brown.... D. dubatolovi n. sp.

- Hind border of deep yellow margins with shallow angle in apical area and tornus; hindwing gray brownish.................................................................................................. D. kohkongensis n. sp.

7. Forewing with a discoidal pale dot; hindwing brown, with a dark patch of androconia...................... D. alternota

- Forewing with a discoidal pale brown dot; hindwing brown, without a dark patch of androconia.............. D.annulata