Saetherolabis Andersen et Mendes

Andersen, Trond, Mendes, Humberto F. & Pinho, Luiz C., 2012, Two new species of Saetherolabis Andersen et Mendes, 2007 from Brazil (Diptera: Chironomidae, Orthocladiinae), Zootaxa 3300, pp. 62-68 : 67

Key to the males of Saetherolabis Andersen et Mendes

1. AR <1.0; caudal lobe of inferior volsella narrow, straight, nearly parallel-sided in basal two-thirds, apically tapering, about 5 μm wide medially ( Andersen & Mendes 2007, Fig. 85). Brazil, Amazonas.............. S. pectinata Andersen et Mendes

– AR> 1.15; caudal lobe of inferior volsella broad, with broadly rounded apex, more than 10 μm wide medially............ 2

2. Transverse sternapodeme curved with oral projections barely indicated; oral branch of inferior volsella digitiform, straight, almost perpendicular to caudal branch; superior volsella well developed, broadly rounded ( Fig. 6 ). Brazil, São Paulo............................................................................................... S. iperuype sp. n.

– Transverse sternapodeme straight with strong oral projections; oral branch of inferior volsella strongly bent, apical one-half almost parallel to caudal branch; superior volsella barely indicated ( Fig. 12 ). Brazil, Sergipe.............. S. siriype sp. n.

Figures

FIGURES 1 – 6. Saetherolabis iperuype sp. n., male. 1 – tentorium, stipes, and cibarial pump; 2 – palp; 3 – thorax; 4 – wing; 5 – hypopygium, dorsal aspect; 6 – hypopygium with anal point and tergite IX removed, dorsal aspect to the left and ventral aspect to the right.

FIGURES 7 – 12. Saetherolabis siriype sp. n., male. 7 – tentorium, stipes, and cibarial pump; 8 – palpomeres 1 - 4; 9 – thorax; 10 – wing; 11 – hypopygium, dorsal aspect; 12 – hypopygium with anal point and tergite IX removed, dorsal aspect to the left and ventral aspect to the right.