Key to species of Mahanarva (Ipiranga)

1. Tegmina with transverse bands (Fig. 16)................................................................... 2

- Tegmina with other color pattern (Fig. 19)................................................................. 6

2. Paramere spine rounded (Figs 26, 28, 30)................................................................... 3

- Paramere spine triangular (Figs 27, 29, 31)................................................................. 4

3. General color brownish, transverse bands on tegmina orange (Fig. 18), paramere with a finger-like process on the apex (Fig. 30)...................................................................... M. (Ipiranga) rubicunda (Fig. 36)

- General color black, transverse bands on tegmina yellowish (Fig. 13), paramere apex rounded (Fig. 26).................................................................................................... M. (Ipiranga) aguirrei

4. Tegmina with transverse bands yellowish (Fig. 14), paramere with a sclerotized process located over spine (Fig. 27)................................................................................. M. (Ipiranga) bahiaensis (Fig. 33)

- Tegmina with transverse bands orange, paramere without a sclerotized process located over spine.................... 5

5. Tegmina brownish with transverse bands orange, narrow and widely spaced (Fig. 15)............. M. (Ipiranga) indentata

- Tegmina black with transverse bands orange, wide and not widely spaced (Fig. 16)...... M. (Ipiranga) integra (Figs 35, 39)

6. Tegmina with longitudinal bands (Fig. 17)................................................................. 7

- Tegmina with other color pattern (Fig. 19).................................................................. 8

7. Subgenital plates with dorsal margin straight, process between anal tube and subgenital plate acute (Fig. 38), aedeagus with dorsal processes shorter than half of the shaft length (Fig. 32).......................... M. (Ipiranga) vittata (Fig. 21)

- Subgenital plates with dorsal margin rounded, process between anal tube and subgenital plate rounded (Fig. 40), aedeagus with dorsal processes longer than half of shaft length (Fig. 34)............................ M. (Ipiranga) fortunata (Fig. 17)

8. Tegmina red, with black, rounded spots on apical plexus of veins (Fig. 19)... M. (Ipiranga) rubripennis comb. nov. (Fig. 37)

- Tegmina black with four yellow, rounded spots (Figs 20)........................................ M. takiyae sp. nov.