Genus Stenochironomus Kieffer, 1919 Revised diagnosis for the genus (adapted from Pinder & Reiss (1983), Borkent (1984), Pinder & Reiss (1986), Cranston et al. (1989)). Male: antepronotum reduced, scutum anteriorly projecting; tibial spurs fused; appendage 2 elongate with setae arranged along dorsal margin. Female: reduced antepronotum, scutum anteriorly projecting; tibial spurs fused. Pupa: respiratory organ with many branches and a non-bifurcating, robust, spinose horn; with or without spicules on abdominal T VII and VIII but, if present, spur on S VIII yellowish brown; pedes spurii B presente or absent. Fourth instar larva: head capsule dorsoventrally flattened; mandible with 2 ventral teeth, without seta interna; concave mentum with 10-12 teeth, lateral tooth dorsolateral to penultimate tooth; ventromental plates reduced.

Published as part of Dantas, Galileu P. S., Hamada, Neusa & Mendes, Humberto F., 2016, Contribution to the knowledge of Stenochironomus Kieffer (Diptera, Chironomidae) from Brazil: seven new species and description of females and immatures of some previously known species, pp. 1-47 in Zootaxa 4117 (1) on page 2, DOI: 10.11646/zootaxa.4117.1.1, http://zenodo.org/record/266257