Acria Stephens, 1834

Saravanan, L., Kalidas, P., Phanikumar, T., Rth, Ma Mu & Chandra Bose, N. S., 2015, A new species of the genus Acria Stephens, 1834 (Lepidoptera: Depressariidae: Acriinae) from India, Zootaxa 3957 (2), pp. 226-230 : 227

Key to species of Acria Stephens, 1834 occurring in India

1. Wing span more than 19 mm ....................................................................................................................................... 2

- Wing span less than 19 mm ......................................................................................................................................... 3

2. Head, thorax and abdomen whitish ochreous; forewing pale ochreous, faintly brownish-tinged, a cloudy,V- shaped, rather dark brown streak on costal area; hindwing ochreous white, tinged grey towards termen; valva S-shaped, broad basally, narrowed apically........................................................................................... A. amphorodes (Meyrick)

- Head and thorax fuscous white, abdomen pale greyish to ochreous; forewing fuscous white suffusedly irrorated with pale, fuscous and posteriorly with light ferruginous; costal scale-projections tipped with light ferruginous-brown; hindwing pale brassy fuscous, pale anteriorly; valva asymmetrical, right valva longer than left one ........................... ............................................................................................................................................. A. emarginella (Donovan)

3. Head, thorax and abdomen dark fuscous; forewing sub-oblong, costa gently curved, slightly oblique, dark fuscous, slightly ferruginous tinged; hindwing dark coppery fuscous ....................................................... A. obtusella (Walker)

- Head thorax and abdomen pale fuscous to golden yellow .......................................................................................... 4

4. Valva triangular in shape............................................................................................................................................... 5

- Valva not triangular in shape ....................................................................................................................................... 6

5. Head ochreous white; thorax fuscous, with whitish shoulders; abdomen yellowish white; forewing ochreous white, a suffused fuscous patch extending along dorsum from base to 1/3, narrowed posteriorly, obscurely interrupted in middle; hindwing fuscous, thinly scaled suffused with dark fuscous posteriorly; uncus broad at the base, forked distally, apex not pointed; valva broad at base, costa produced as finger-like............................................ A. eulectra Meyrick

- Head whitish, crown tinged with pale fuscous shade; thorax reddish fuscous; abdomen golden yellow; forewing pale reddish grey, irrorated with reddish fuscous scales, a cloudy dark grey spot on dorsum, cloudy dark grey marks on costa at 1/3 and before sinuation; valva triangular in shape, costa produced to pointed process distally ..................... ................................................................................................................................................. A. xanthosaris Meyrick

6. Head and thorax fuscous; abdomen pale fuscous grey, in male tinged with yellow ochreous shade; forewing fuscous or grey, usually partially tinged with red; coastal edge in sinuation usually more or less reddish-ochreous; hindwing fuscous, sometimes ochreous tinged, darker towards apex; valva with two pointed apical process, wherein ventral process longer than dorsalone...................................................................................................... A. ceramitis Meyrick

- Head whitish ochreous; thorax with brownish black scales; abdomen yellowish white; forewing of male pale greyish white, greyish brown in female, costal edge in sinuation ochreous; hind wing greyish white with whitish long fringe; valva wide at base, apex bifurcated, costa of valve produced to finger-like projection distally ... A. meyricki sp. nov.