Key to species of bifida group of Ascra

1. Arms of the anterior bifurcation of metasternal process flatted dorsoventrally (Figs. 31, 32); corium almost transparent; legs with small black macules at base of setae (Fig. 63)...................................................... abdita

- Arms of the anterior bifurcation of metasternal process subcylindrical or flattened laterally (Figs. 1−2, 9−10, 25−26, 39−40, 46−47); corium translucent brown; legs not maculate (Figs. 59−62, 64−65)....................................... 2

2. Margin of body red (Fig. 55); ventral surface contrastingly brown and yellow (Fig. 62); bottom of medial excavation of ventral rim concave and delimited by two short carina (Fig. 29); gonocoxites 8 with dorsal margin bearing a dentiform small projection close to gonocoxites 9 (Fig. 27)................................................................. petersii

- Margin of body yellow or concolorous (Figs. 52−54, 57−58); ventral surface greenish yellow to red with color more uniform (Figs. 59−61, 64−65); bottom of medial excavation of ventral rim concave or flat without carina or with only one; gonocoxites 8 with distal margin rounded to acuminate (Figs. 4, 12, 20, 34, 41, 48)........................................... 3

3. Ventral surface of body red (Fig. 61); connexivum red; without cordiform spot on apex of scutellum (Fig. 54); parameres narrow without developed lateral process (Fig. 27)..................................................... championi

- Ventral surface of body greenish yellow to brown or variegate (Figs. 59−60, 64−65); connexivum green to brown; apex of scutellum with a cordiform or V-shaped yellow spot (Figs. 52, 53, 57, 58); parameres with developed lateral process (Fig. 7, 15, 23, 44, 51)....................................................................................... 4

4. Body dark brown greenish; cordiform spot large (Fig. 53); expansion of ventral rim pyramidal (Figs. 14, 15); parameres bifurcated at base (Fig. 15)........................................................................... cordifera

- Body green to light brown; cordiform spot small or V −shaped (Figs. 52, 57−58); expansion of ventral rim rounded (Figs. 6−7, 50−51, 43−44); parameres lanceolate or expanded distally (Figs. 7, 30, 51)....................................... 5

5. Margins of scutellum concolorous with disc (Fig. 52); distal part of parameres lanceolate (Fig. 7).................. bifida

- Anterior or lateral margins of scutellum yellow (Figs. 57−58); distal part of parameres expanded (Figs. 44, 51).......... 6

6. Scutellum with a wide yellow stripe on lateral margins, apex punctate (Fig. 58); ventral rim with a narrow medial excavation hiding parameres in ventral view (Fig. 50)....................................................... vluteum n. sp.

- Scutellum with a narrow yellow stripe on anterior margin, apex not punctate (Fig. 57); ventral rim widely excavated medially leaving parameres partially visible in ventral view (Fig. 43)................................... flavoscutellata n. sp.