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Nilothauma aristatum sp. n., male. 12 wing 13 foretibial apex 14 mid tibial apex 15 hind tibial apex 16 hypopygium, dorsal view (left) and ventral view (right) 17 posterior margin of anal tergite.
Source publication
Three new species of Nilothauma Kieffer are described and figured from Oriental China: Nilothauma angustum sp. n. based on the male only, Nilothauma aristatum sp. n. based on the male, pupa and larva, and Nilothauma bilobatum sp. n. based on the male and pupa. In addition, new distribution records are given for Nilothauma japonicum Niitsuma, Niloth...
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The marine Chironomidae Ainuyusurika Sasa et Shirasaka, 1988, previously known from the adults only, is associated with its immature stages for the first time based on reared specimens from Oriental China. The larva resembles those of Sergentia Kieffer and Endochironomus Kieffer in the ventromental plate with an anteromedial projection and the 5-se...
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Citations
... Moreover, in many species, males have median or lateral lobes or projections on tergite IX, which can sometimes be densely setose (Mendes & Andersen 2009;Pinho & Andersen 2021). The genus was created by Kieffer (1921) and currently comprises 63 valid species distributed worldwide, of which 33 occur in the Neotropical region (Adam & Saether 1999;Yan et al. 2005;Mendes & Andersen 2009;Qi et al. 2014Qi et al. , 2016Andersen et al. 2016;Dantas & Hamada 2017;Niitsuma 2016;Pinho & Andersen 2021), with 30 recorded in Brazil (Pinho 2023) and only two in Peru (Roback 1960). ...
Two new species of Nilothauma from Brazil and Peru are described and illustrated based on adult males collected respectively in the central and western Amazon. In addition, new records of Nilothauma complicatum Mendes & Andersen, 2009 in Brazil are provided.
... Most males of the genus can be distinguished from all other Chironomini genera by the following combination of characters: presence of at least one dorsal lobe on tergite IX -(except several neotropical species which lack dorsal projections on TIX), antenna with 13 flagellomeres, antennal ratio low to very low, bare squama, VR generally high, fore tibia with long spur on the conical apical scale, transverse sternapodeme absent, or if present without oral projections (Cranston et al. 1989;Mendes & Andersen 2009;Andersen et al. 2016;Niitsuma 2016). The genus was created by Kieffer (1921) and currently includes 49 valid species distributed worldwide, of which 3 occur in the Palaearctic region, 4 in the Nearctic region, 7 in the Oriental region, 11 in the Afrotropical region, 2 in the Australasian region, 3 occurrs in the Palaearctic and Oriental regions, and 19 in the Neotropical region (Adam & Saether 1999;Yan et al. 2005;Mendes & Andersen 2009;Qi et al. 2014Qi et al. , 2016Andersen et al. 2016;Niitsuma 2016), of which 16 have been recorded to Brazil. ...
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.
... Later, Mendes andAndersen (2009) placed Paranilothauma Soponis, 1987 and Neelamia Soponis 1987 as synonyms of Nilothauma and described 13 new species from the Neotropical region. A further five new species have been described from eastern China by Yan et al. (2005) and Qi et al. (2014Qi et al. ( , 2016, and recently Niitsuma (2016) added one new species from Japan and placed Nilothauma sasai Adam and Saether (1999) as a synonym of Nilothauma hibaratertium Sasa, 1993. The genus is distributed in all biogeographical regions except Antarctica. ...
Nilothauma canaima n. sp. from Bolívar State in southeastern Venezuela, Nilothauma granma n. sp. from Granma Province in eastern Cuba and Nilothauma soka n. sp. from Amazonas State in Brazil are described and figured as males. N. canaima can be grouped with Nearctic Nilothauma verrucum Adam and Sæther, but can be separated based on its small size as it has a wing length <1.3 mm and an AR = 0.13. N. granma can be grouped with Nearctic Nilothauma babiyi (Rempel) and Neotropical Nilothauma matogrossense Mendes and Andersen, but can be separated from both as it has a wing with distinct, dark areas. N. soka can be grouped with Neotropical Nilothauma aripuanense Mendes and Andersen, but can be separated based on the shape of the superior volsella as it has a boot-shaped superior volsella with microtrichia only. A key is given to the males of Nilothauma from the New World.
Nine new species of Nilothauma Kieffer, N. hamadaesp. nov., N. jupausp. nov., N. karitianasp. nov., N. lecciisp. nov., N. marianoisp. nov., N. mateusisp. nov., N. txukuyanasp. nov., N. werekenasp. nov. and N. yekwanasp. nov. are described and figured, based on adult males collected in Brazil and N. mayasp. nov. on an adult male from Mexico; N. terenasp. nov. is described as male, pupa and larva based on a reared specimen from Brazil. Nilothauma aleta Roback, 1960 and N. duena Roback, 1960 are re-described and recorded from Brazil. Nilothauma longissimum Mendes & Andersen, 2009 is transferred to Beardius Reiss & Sublette, 1985 and the diagnosis of Nilothauma is emended. New records of thirteen Neotropical Nilothauma species are given and a key to the males of all known species of Nilothauma is provided.
A checklist of the family Chironomidae (Diptera) recorded from the Oriental Region is presented. It contains 1195 described species of chironomid midges under 149 genera belonging to 7 subfamilies, Buchonomyiinae (1 genus, 1 species), Podonominae (2 genera, 3 species), Tanypodinae (23, 159), Diamesinae (7, 34), Telmatogetoninae (2, 5), Orthocladiinae (55, 367) and Chironominae (59, 626) of the family Chironomidae from the Oriental Region with the inclusion of several synonyms, new combinations, and nomina dubia. There are still nearly 130 species whose systematic positions could not be determined on account of non-availability of the types and inadequate descriptions and illustrations of the original authors.
