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 : 63

Saetherolabis Andersen et Mendes

Saetherolabis Andersen et Mendes, 2007: 40 .

Type species: Saetherolabis pectinata Andersen et Mendes, 2007: 43 , original designation by monotypy. Other included species: Saetherolabis iperuype sp. n. and S. siriype sp. n.

Diagnostic characters and description as in Andersen and Mendes (2007) with the following emendations:

Emended diagnostic characters: Costa strongly extended or short with false vein nearly reaching wing tip; with few, weak, simple or scalpellate acrostichals in midscutum or acrostichals apparently lacking; palpomeres shortened to normally developed; antenna with 11–13 segments in the male.

Emended description: Male. Small species, wing length 0.6–0.9 mm.

Head. Male antenna with 11–13 flagellomeres; AR 0.90–1.30. Palp 5-segmented, shortened to normally developed; palpomeres 1–2, sometimes 1–4, spherical; palpomere 3 with 4–6 sensilla clavata in subapical sensillum coeloconicum. Temporal setae in single row, inner verticals well separated from outer verticals, postorbitals present or absent. Cibarial pump subtriangular to subrectangular, with well developed cornua and straight anterior margin.

Thorax. Acrostichals few, weak, simple to scalpellate at midscutum; apparently absent in S. siriype .

Wing. Costa strongly extended or short with false vein nearly reaching wing tip; R4+5 ending proximal or opposite to M3+4; Cu1 curved to slightly sinuous; An ending proximal or at FCu.

Legs. Tibial spurs on fore- and hind legs normal, mid leg with one or two spurs.

Hypopygium. Anal point with triangular base, well sclerotized, parallel-sided to slightly wider at rounded apex. Tergite IX short to normally developed, with few setae on each side of base of anal point; laterosternite IX bare or with few setae. Sternapodeme well developed, with straight to strongly curved anterior margin; oral projections well developed to barely indicated. Inferior volsella deeply split in straight, curved or strongly bent oral branch and narrow, tapering to broad, broadly rounded caudal branch. Superior volsella lacking to well developed. Gonostylus without or with low, subapical crista dorsalis.