Abstract
Three new species of Nilothauma from Brazil are described and illustrated based on adult males. Nilothauma paucisetis sp. nov. is similar to Nilothauma aripuanense Mendes & Andersen, 2009, but can be distinguished by the number of dorsal setae on tergite IX and by the shape of anal point. Nilothauma anamariae sp. nov. is easily recognized by having the inferior volsella L-shaped, with a long simple lateral bristle and an apical lobe directed inwards, bearing 10–12 apically split setae. Nilothauma jaquei sp. nov. is distinguished from all others congeneric species by the superior volsella without microtrichia, with one apical seta and a lateral spine.
References
Adam, J.I. & Sæther, O.A. (1999) Revision of the genus Nilothauma Kieffer, 1921 (Diptera: Chironomidae). Entomologica scandinavica, 56 (Supplement), 1–107.
https://doi.org/10.1051/limn/2016013Andersen, T., González, O.C.B. & Hagenlund, L.K. (2016) Three new Neotropical species of Nilothauma Kieffer, 1921 (Diptera: Chironomidae). Annales de Limnologie - International Journal of Limnology, 52, 253–261.
Cranston, P.S., Dillon, M.E., Pinder, C.V. & Reiss, F. (1989) The adult males of Chironominae (Diptera: Chironomidae) of the Holarctic region—Keys and diagnoses. In: Wiederholm, T. (Ed.), Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult males. Entomologica scandinavica, 34 (Supplement), pp. 353–532.
Kieffer, J.J. (1921) Synopse de la tribu des Chironomariae (Diptères). Annales de la Société scientifique de Bruxelles, 40 (3–4), 269–277.
Mendes, H.F. & Andersen, T. (2009) Neotropical Nilothauma Kieffer, 1921, with the description of thirteen new species (Diptera: Chironomidae). Zootaxa, 2063, 1–45.
Niitsuma, H. (2016) Two species of Nilothauma Kieffer (Diptera, Chironomidae) from Japan, with description of a new species. Zootaxa, 4079 (5), 573–581.
https://doi.org/10.11646/zootaxa.4079.5.4Pinder, L.C.V. (1989) The adult of Chironomidae (Diptera) of the Holarctic region—Introduction. In: Wiederholm, T. (Ed.), Chironomidae of the Holarctic region. Keys and diagnoses. Part 3. Adult males. Entomologica scandinavica, 34 (Supplement), pp. 5–9.
Qi, X., Lin, X., Wang, X. & Shao, Q. (2014) A new species of Nilothauma Kieffer from China, with a key to known species of the genus (Diptera: Chironomidae). Zootaxa, 3869 (5), 573–578.
https://doi.org/10.11646/zootaxa.3869.5.7Qi, X., Tang, H. & Wang, X. (2016) Notes on Nilothauma Kieffer from Oriental China, with descriptions of three new species (Diptera, Chironomidae). ZooKeys, 574, 143–159.
https://doi.org/10.3897/zookeys.574.6129Sæther, O.A. (1980) Glossary of chironomid morphology terminology (Diptera: Chironomidae). Entomologica scandinavica, 14 (Supplement), 1–51.
Yan, C., Tang, H. & Wang, X. (2005) Nilothauma Kieffer from China (Diptera: Chironomidae). Aquatic Insects, 27, 213–220.
https://doi.org/10.1080/01650420500062824