Key to species of Formiscurra

Males:

1 Fore wings brown to dark brown or black, each with an opalescent green (in live specimens, Fig. 20) or whitish (in dry specimens) large spot (GNEZDILOV & VIRAKTAMATH 2011: Figs 3, 5). Apices of both aedeagal ventral hooks directed downwards (GNEZDILOV & VIRAKTAMATH 2011: Fig. 10). Total body length 4.6–5.1 mm. ....... F. indicus Gnezdilov & Viraktamath, 2011

‒ Fore wings dark brown to black, with a wide ivory band (Figs 1, 2). Right aedeagal hook directed upwards, left one turned downwards (Figs 11–13). Total body length 5.3 mm. .............. F. atlas sp. nov.

Females:

1 Metopial projection, in dorsal view, smoothly narrowing apically; in lateral view, 1.5 times as long as wide (GNEZDILOV & VIRAKTAMATH 2011: Figs 6, 7). Generally darker, head and body with a broad longitudinal pale stripe along midline dorsally (GNEZDILOV & VIRAKTAMATH 2011: Figs 6, 7). Total body length 5 mm. ...................................................... ............... F. indicus Gnezdilov & Viraktamath, 2011

‒ Metopial projection, in dorsal view, with weak constriction (Fig. 4); in lateral view, 1.15–1.25 times as long as wide (Fig. 3). Generally lighter, head and body without longitudinal pale stripe dorsally (Fig. 4). Total body length 5.6–5.7 mm. ....... F. atlas sp. nov.