Corynoneura

Wiedenbrug, Sofia & Trivinho-Strixino, Susana, 2009, Ubatubaneura, a new genus of the Corynoneura group (Diptera: Chironomidae: Orthocladiinae) from the Brazilian Atlantic Forest, Zootaxa 1993, pp. 41-52 : 42

Key to the males of the Corynoneura group

1. Small size; wing length less than 1.3 mm. Wing with clavus where R1 and R2+3 are fused with costa. Corynoneura group ............................................................................................................................................................................ 2

- Small to large size; wing without clavus ....................................................................................................... not keyed

2. Anal point weak; median lobes of antepronotum strongly reduced ......................... Physoneura Ferrington et Saether

- Anal point absent; antepronotum usually not reduced.................................................................................................. 3

3. Eyes hairy; R4+5 apically joining costa and continuing as “false vein” to the wing tip ( Harrison 1997, Fig. 3 ).... Noto- cladius Harrison

- Eyes hairy or bare; R4+5 apically not joining costa ( Saether & Kristoffersen 1996, Figs 1, 2)...................................... 4

4. Palp with one palpomere; gonostylus without megaseta ( Mendes et al. 2004, Figs 1, 9); wing with distinct punctua- tion. ............................................................................................................................................ Ichthyocladius Fittkau

- Palp with five palpomeres; gonostylus with megaseta; wing with fine punctuation.................................................... 5

5. Sternapodeme inverted V or U-shaped; hind tibia usually strongly expanded distally; eyes bare. ............................... ................................................................................................................................................... Corynoneura Winnertz

- Transverse sternapodeme not as above; hind tibia not strongly expanded; eyes bare to hairy. ................................... 6

6. Tergites II–V with raised, median circular group of setae and few lateral setae (Epler & de la Rosa 1995, Fig. 2 E); eyes bare, sternapodeme with strong oral projections ........................................ Tempisquitoneura Epler et de la Rosa

- Tergites II–V not as above; eyes hairy or bare; sternapodeme with or without strong oral projections. .................... 7

7. Sternapodeme usually with strong anteriolateral projections; inferior volsella strong; superior volsella low but dis- tinct; eyes bare; tergites with row of setae.................................................................... Onconeura Andersen et Saether

- Other character combination......................................................................................................................................... 8

8. Eyes bare; head with right-angled dorsolateral region; terminal flagellomere with triangular apex surrounded by sen- silla chaetica; transverse sternapodeme without oral projections. ............................................. Ubatubaneura n. gen.

- Eyes usually hairy; head shape and apex of antenna not as above; transverse sternapodeme with or without oral pro- jections ..................................................................................................................................... Thienemanniella Kieffer

Figures

FIGURE 2. Ubatubaneura atlantica n. sp., female. A — wing. B — genitalia, ventral view. C — genitalia, dorsal view. D — detail of sternite VIII and gonapophysis, left: ventral view, right: ventral view with gonapophysis removed. E — labium. F — apodeme lobe.

FIGURE 3. Ubatubaneura atlantica n. sp., pupa. A — frontal apotome, antennal and eye sheaths. B — thorax, lateral view. C — wing sheath, distal margin. D — abdomen, dorsal view. E — sternites I – VIII. F — anal lobe, ventral view.