Saetherocladius Andersen et Mendes

Andersen, Trond, Mendes, Humberto F. & Pinho, Luiz C., 2010, Four new species of Saetherocladius Andersen et Mendes from Mata Atlântica, Brazil (Diptera: Chironomidae: Orthocladiinae), Zootaxa 2608, pp. 45-56 : 55-56

Key to the males of Saetherocladius Andersen et Mendes

1. AR <0.51; virga <12 µm long.................................................................................................................................... 2

- AR> 0.69; virga> 15 µm long.................................................................................................................................... 4

2. Gonostylus without distinct outer projection; anal point parallel-sided or tapering..................................................... 3

- Gonostylus with distinct outer projection; anal point weakly spatulate ( Fig. 17 ) ....................... S. triangulatus sp. n.

3. Gonostylus widest in basal half; inferior and superior volsella well separated, inferior volsella without dorsal microtrichia ( Figs 1–2 ). ................................................................................................... S. hirtus Andersen et Mendes

- Gonostylus widest medially; inferior and superior volsella less well separated, inferior volsella with dorsal microtri- chia ( Figs 6–8 ). .................................................................................................................................. S. fusticulus sp. n.

4. Inferior volsella sharply triangular; outer projection of gonostylus with bare, sclerotized apex; virga 16 μm long ( Figs 12–13 ) ............................................................................................................................................. S. fusus sp. n.

- Inferior volsella bluntly triangular; outer projection of gonostylus with microtrichia towards apex; virga 24–26 μm long ( Figs 23–25 ) .......................................................................................................................... S. urubiciensis sp. n.

Figures

FIGURES 14 – 19. Saetherocladius triangulatus sp. n., male. 14 — tentorium, stipes and cibarial pump; 15 — thorax; 16 — wing; 17 — anal point and tergite IX and dorsal aspect of left gonocoxite and gonostylus; 18 — hypopygium with tergite IX and anal point removed, dorsal aspect to the left, ventral aspect to the right; 19 — gonostylus with crista dorsalis projecting upwards.

FIGURES 1 – 2. Saetherocladius hirtus Andersen et Mendes, 2007, male. 1 - anal point and tergite IX and dorsal aspect of left gonocoxite and gonostylus; 2 — hypopygium with tergite IX and anal point removed, dorsal aspect to the left, ventral aspect to the right.

FIGURES 3 – 8. Saetherocladius fusticulus sp. n., male. 3 — tentorium, stipes and cibarial pump; 4 — thorax; 5 — wing; 6 — anal point and tergite IX and dorsal aspect of left gonocoxite and gonostylus; 7 — hypopygium with tergite IX and anal point removed, dorsal aspect to the left, ventral aspect to the right; 8 — gonostylus with crista dorsalis projecting upwards.

FIGURES 9 – 13. Saetherocladius fusus sp. n., male. 9 — tentorium, stipes and cibarial pump; 10 — thorax; 11 — wing; 12 — anal point and tergite IX and dorsal aspect of left gonocoxite and gonostylus; 13 — hypopygium with tergite IX and anal point removed, dorsal aspect to the left, ventral aspect to the right.

FIGURES 20 – 25. Saetherocladius urubiciensis sp. n., male. 20 — tentorium, stipes and cibarial pump; 21 — thorax; 22 — wing; 23 — anal point and tergite IX and dorsal aspect of left gonocoxite and gonostylus; 24 — hypopygium with tergite IX and anal point removed, dorsal aspect to the left, ventral aspect to the right; 25 — gonostylus with crista dorsalis projecting upwards.