Onconeura Andersen et Saether

Wiedenbrug, Sofia, Mendes, Humberto F., Pepinelli, Mateus & Trivinho-Strixino, Susana, 2009, Review of the genus Onconeura Andersen et Saether (Diptera: Chironomidae), with the description of four new species from Brazil, Zootaxa 2265, pp. 1-26 : 22

Key to known males of Onconeura Andersen et Saether

1. Antenna with 10 or less flagellomeres.......................................................................................................................... 2

- Antenna with more than 10 flagellomeres.................................................................................................................... 4

2. Superior volsella wide with a concave posterior margin. ( Figs 1 B, 4B) ...................................................................... 3

- Superior volsella narrow, posterior margin almost straight ( Fig. 2 B) ......................................... Onconeura japi sp.n.

3. Inferior volsella small; median margin of gonocoxite ventrally with two protuberances bearing setae, in addition to superior and inferior volsella ( Fig. 1 B)............................................................................. Onconeura cascatinha sp.n.

- Inferior volsella large; median margin of gonocoxite straight and without protuberances ( Fig. 4 B) ............................ ........................................................................................................................................ Onconeura oncovolsella sp.n.

4. AR 0.6 – 0.7; wing longer than 0.9 mm; antenna with 11 flagellomeres; tergites III and IV with more than 9 setae .. 5

- AR lower and wing length shorter than above; antenna with 12 flagellomeres; tergites III and IV with less than 9 setae.............................................................................................................................................................................. 6

5. Phallapodeme strongly curved posteriorly ( Andersen & Saether 2005, fig. 1H)............................................................ ....................................................................................................... Onconeura undecimata Andersen et Saether, 2005

- Phallapodeme slightly bent posteriorly ( Paggi 1985, fig. 9) ................................ Onconeura desertica ( Paggi, 1985)

6. One seta on laterosternite IX; anal lobe absent on wing ( Figs 6 A, B) ............................ Onconeura similispina sp.n.

- Two or three setae on laterosternite IX; anal lobe present .......................... Onconeura semifimbriata ( Saether, 1981)

Figures

FIGURE 1. Onconeura cascatinha n. sp. A – B — male, hypopygium, A — detail of tergite IX, dorsal, B — tergite IX removed, sclerites hatched; left: ventral, right: dorsal view with gonostylus removed. C – E — pupal abdomen, C — dorsal view, D — ventral view, E — detail of posterior row of spines on tergite IV.

FIGURE 2. Onconeura japi n. sp. A – B — male, hypopygium, A — detail of tergite IX, dorsal, B — hypopygium, tergite IX removed, sclerites hatched; left: dorsal, right: ventral view with gonostylus removed. C – F — female genitalia, C — ventral view, left with gonapophysis removed, D — dorsal view, E — apodeme lobe, F — labia.

FIGURE 4. Onconeura oncovolsella n. sp. A – C — male, A — wing, B — hypopygium, tergite IX removed, sclerites hatched, right: ventral view, with gonostylus removed, C — hypopygium, detail of tergite IX, gonocoxite and gonostylus, dorsal, D – G — female genitalia, D — dorsal view, E — ventral view, left with gonapophysis removed, F — apodeme lobe, G — labia, H — vaginal opening.

FIGURE 6. Onconeura similispina n. sp. A – C — male, A — wing, B — hypopygium, detail of tergite IX, dorsal, C — hypopygium, tergite IX removed, sclerites hatched; left: ventral view with gonostylus removed, right: dorsal view. D – G — female genitalia, D — dorsal view, E — ventral view, left with gonapophysis removed, F — apodeme lobe, G — labia, H — vaginal opening.