Key to species of Balera

(Modified from Freytag 1992)

1 Aedeagus without processes on apical region, with lobes, keels or bifurcation (Figs 16–18)........................... 2

- Aedeagus with processes on apical region (Figs 14, 19–21, 23, 24, 26, 28, 29).................................... 4

2 Aedeagus inflated, shaft keeled laterally, with 3 apical lobes (Fig. 16).................... B. pellucida (Osborn) (Bolivia)

- Aedeagus not inflated, shaft with or without keels, without apical lobes (Figs 17–18)................................ 3

3 Aedeagus bifurcated distally (Fig. 17)............................................. B. bracata Ruppel (Colombia)

- Aedeagus not bifurcated, with pair of lateral keels on apical half (Fig.18).................... B. pusilla Young (Panama)

4 Aedeagus with one pair of apical processes (Figs 19, 21, 23, 24, 26, 28).......................................... 5

- Aedeagus with two or more pairs of apical processes (Figs 14, 20, 29).......................................... 10

5 Style with acute apex (Figs 13, 25, 27).................................................................... 6

- Style with truncate apex (Fig. 22).................................................. B. obtusa Freytag (Ecuador)

6 Apices of aedeagal processes convergent, in ventral view, near stem base (Fig. 23)........ B. napoensis Freytag (Ecuador)

- Apices of aedeagal processes not convergent (Figs 24, 26, 28)................................................. 7

7 Apex of aedeagus narrow and pointed in ventral view (Figs 24, 26).............................................. 8

- Apex of aedeagus not pointed in ventral view (Figs 19, 28)................................................... 9

8 Style slightly angled on apical half (Fig. 25); pygofer long, with posterior margin well developed, narrowly rounded off.................................................................................. B. plagata Freytag (Ecuador)

- Style strongly angled on apical half (Fig. 27); pygofer broad, with posterior margin little developed................................................................................................. B. ecuadora Freytag (Ecuador)

9 Posterior margin of pygofer broadly rounded................... B. caraguatae Young (Brazil, Panama, Trinidad-Tobago)

- Posterior margin of pygofer with acuminate process............................ B. signata Dworakowska (Venezuela)

10 Aedeagus with two pairs of apical processes (Figs 20, 29).................................................... 11

- Aedeagus with three pairs of apical processes (Fig. 14)..................................... B. fiuzai sp.nov. (Brazil)

11 Dorsoapical pair of aedeagal processes longer than ventral pair (Fig. 20).................... B. myersi Freytag (Ecuador)

- Dorsoapical pair of aedeagal processes approximately same length than ventral pair (Fig. 29).................................................................................................... B. emarginata (Osborn) (Bolivia)