Nilothauma Kieffer, 1921

Pinho, Luiz Carlos & Andersen, Trond, 2021, Neotropical Nilothauma Kieffer, 1921 (Diptera, Chironomidae): Key, eleven new species, re-descriptions, new combination and new records, ZooKeys 1033, pp. 81-125 : 81

Nilothauma Kieffer, 1921

Emended diagnosis.

After transferring Nilothauma longissimum Mendes & Andersen, 2009 to Beardius Reiss & Sublette, 1985 (see above), adult males of Nilothauma become more easily separated from other genera. The diagnosis given by Mendes and Andersen (2009) has to be emended as follows: "antennal ratio generally low (AR <0.40), one species ( N. longissimum sp. nov.) with AR> 1.00." should read: "antennal ratio generally low (AR <0.40), occasionally as high as 0.82 ( N. soka Andersen, Bello González & Hagenlund, 2016).

The discovery of the pupae of N. terena sp. nov. leads to the diagnosis of the pupa given by Mendes and Andersen (2009) having to be emended as follows: "Frontal setae short, not on tubercles." should read "Frontal setae short, occasionally long and taeniate, not on tubercles." Further, "Sternites I-VII bare; sternite VIII with central, longitudinal field of shagreen." should read "Sternites I-VII usually bare, sternite I occasionally with extensive shagreen; sternite VIII with central, longitudinal field of shagreen."

Based on the larva of N. terena sp. nov., the diagnosis of the Nilothauma larvae in Epler et al. (2013) should be emended as follows: "Mandible. All teeth pale;" should read: "Mandible. All teeth pale, occasionally inner teeth with somewhat darker pigmentation;" and "Mentum. Pale;" should read: "Mentum. Pale, occasionally with somewhat darker pigmentation".