Onega

Takiya, Daniela Maeda & Cavichioli, Rodney Ramiro, 2004, A review of the Neotropical sharpshooter genus Onega Distant, 1908 (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 718, pp. 1-19 : 6-7

publication ID	https://doi.org/ 10.5281/zenodo.158154
DOI	https://doi.org/10.5281/zenodo.5697198
persistent identifier	https://treatment.plazi.org/id/03CF87FA-FF81-FFE3-AF1E-FEF1FAC478CD
treatment provided by	Plazi
scientific name	Onega
status

Treatment

Key to species of Onega View in CoL

1) Forewings without supernumerary crossveins ............................................................. 2

1’) Forewings with supernumerary crossveins on corium and clavus ............................... 3

2) Crownfrons transition with carina only on median portion, not continuous with carina on antennal ledges; forewings light brown maculate with translucent white ( Fig. 1 View FIGURE 1 D); male pygofer with posterior margin forming a lobe bearing short stout macrosetae ( Fig. 2 View FIGURE 2 A); subgenital plates much shorter than pygofer ( Fig. 2 View FIGURE 2 A); aedeagus with single apical process ( Fig. 2 View FIGURE 2 D); female unknown...................................... O. freytagi View in CoL sp. nov.

2’) Crownfrons transition with carina complete, continuous with carina on antennal ledges; forewings translucent yellow with few small lighter yellow spots at base ( Fig. 1 View FIGURE 1 B); male pygofer without setigerous lobe ( Young 1977: Fig. 232c); subgenital plates extending posteriorly beyond pygofer apex ( Young 1977: Fig. 232c); aedeagus with pair of apical processes ( Young 1977: Figs 232f, p); female sternite VII with very elongate lateral margins ( Cavichioli & Wyler 1992: Fig. 4 View FIGURE 4 ).......... O. bracteata Young View in CoL

3) Forewings mostly dark with large unpigmented oblique area on basal half of clavus (usually covered with brochosomes) ( Figs 1 View FIGURE 1 F, G) ...................................................... 4

3’) Forewings variably colored, but without large unpigmented area on basal half of clavus ( Figs 1 View FIGURE 1 A, C, E, H) .................................................................................................. 5

4) Females smaller, 12.3–13.3 mm; forewings dark brown to black ( Fig. 1 View FIGURE 1 F); male pygofer with apical margin serrate ( Fig. 4 View FIGURE 4 A); aedeagus with dorsal robust elongate process extending from base posteriorly beyond apex of shaft ( Fig. 4 View FIGURE 4 D); female sternite VII with posterior margin broadly round and without median projection ( Fig. 4 View FIGURE 4 G); female pygofer with macrosetae along most of posteroventral margin ( Fig. 4 View FIGURE 4 I) ........... .......................................................................................................... O. orphne View in CoL sp. nov.

4’) Females larger, approximately 14.9 mm; forewings dark red ( Fig. 1 View FIGURE 1 G); male unknown; female sternite VII with small median projection on posterior margin ( Fig. 5 View FIGURE 5 A); female pygofer with few macrosetae restricted to dorsal anteapical region ( Fig. 5 View FIGURE 5 C) ... ............................................................................................... O. sanguinicollis View in CoL Latreille

5) Forewings with costal margin bordered with red and clavus never red ( Figs 1 View FIGURE 1 C, E); males with paraphysis present as median sclerite ( Fig. 3 View FIGURE 3 D, Young 1977: Fig. 233f); female sternite VII abruptly narrowed on apical portion ( Fig. 3 View FIGURE 3 E, Young 1977: Fig. 233i) ....................................................................................................................................... 6

5’) Forewings with costal margin usually not bordered with red ( Figs 1 View FIGURE 1 A, H), if costal margin is red then clavus is red; males without paraphysis ( Young 1977: Figs 234f, 235f, 236f); female sternite not abruptly narrowed distally (female of O. stella View in CoL unknown) ( Young 1977: Figs 234i, 235i) .................................................................... 7

6) Forewings with small translucent white speckles ( Fig. 1 View FIGURE 1 F); male pygofer with apex broadly round ( Fig. 3 View FIGURE 3 A); aedeagus without dorsal elongate process ( Fig. 3 View FIGURE 3 D) ............. .......................................................................................................... O. krameri View in CoL sp. nov.

6’) Forewings without speckles ( Fig. 1 View FIGURE 1 C); male pygofer with apex modified into a narrow

lobe extending posterodorsally ( Young 1977: Fig. 233c); aedeagus with dorsal elongate process arising near base, extending posteriorly almost to apex of median ventral process ( Young 1977: Fig. 233f)........................................................... O. fassli Young View in CoL 7) Male pygofer produced apically into an acute process ( Young 1977: Figs 235c, p, 236c); styles with apex broadened and footshaped ( Young 1977: Figs 235e, 236e)... 8

7’) Male pygofer with apex broadly round ( Young 1977: Fig. 234c); styles with apex round, not footshaped ( Young 1977: Fig. 234e) ............................. O. stipata (Walker) View in CoL

8) Forewings with broad black subcostal stripe extending from near base to just beyond middle ( Fig. 1 View FIGURE 1 A); claval crossveins limited posteriorly and laterally by outer claval vein .............................................................................................................. O. avella View in CoL Distant

8’) Forewings without black subcostal stripe; claval crossveins occurring more extensively ............................................................................................................... O. stella View in CoL Distant