A new species of Nilothauma Kieffer from China, with a key to known species of the genus (Diptera: Chironomidae)

Abstract

A new species of the genus Nilothauma Kieffer, N. pandum sp. n., is described, and its morphological descriptions and illustrations are also given. A key to the males of Nilothauma is given. The adult male of N. pandum sp. n. can be distinguished from known species of the genus by the following combination of characters: anal point very broadly lanceolate with microtrichia in median ridge and apical margin, rounded at apex; superior volsella pad-like, expanded distally; median volsella curved, rounded at apex, with 2 long basal setae and 1 long median seta.

Three new Neotropical species ofNilothauma Kieffer, 1921 (Diptera: Chironomidae)

“…Of the six species described from China and Japan, N. quatuorlobum Yan et al, 2005; N. pandum Qi et al, 2014;N. aristatum Qi et al, 2016;N.…”

“…Later, Mendes and Andersen (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.…”

Neotropical Nilothauma Kieffer, 1921 (Diptera, Chironomidae): Key, eleven new species, re-descriptions, new combination and new records

“…To date, the genus comprises 52 described species that occur in all zoogeographical regions, except Antarctica (Qi et al 2014(Qi et al , 2016Niitsuma 2016;Dantas and Hamada 2017). A total of 22 species are known from the Neotropical and four from the Nearctic Regions (Andersen et al 2016;Dantas and Hamada 2017).…”

“…Key to the males of Nilothauma Kieffer of the world Modified from Qi et al (2014), Niitsuma (2016) and Andersen et al (2016), with the inclusion of sixteen species.…”

Notes on Nilothauma Kieffer from Oriental China, with descriptions of three new species (Diptera, Chironomidae)

“…The genus Nilothauma Kieffer, 1921 is represented by 43 species: six species occurring in the Palaearctic region, four in the Nearctic region, 16 in the Neotropical region (not including Nilothauma aleta Roback and Nilothauma duena Roback due to the uncertain status), six species in the Oriental region, 11 species in the Afrotropical region, two species in the Australasian region, and two species occuring both in the Palaearctic and Oriental regions (Adam and Sæther 1999; Mendes and Andersen 2009; Qi et al 2014). From China, five species have been recorded: Nilothauma japonicum Niitsuma, Nilothauma nojirimaculatum Sasa, Nilothauma acre Adam & Sæther, Nilothauma quatuorlobum Yan, Tang & Wang, and Nilothauma pandum Qi, Lin, Wang & Shao; all in the Oriental part of the country.…”