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

Trond Andersen,Orestes C Bello González,Linn Katrine Hagenlund

doi:10.1051/limn/2016013

Abstract

Nilothauma canaima n. sp. from Bolivar 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 Saether, but can be separated based on its small size as it has a wing length 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.

Highlights

The genus Nilothauma was erected by Kieffer (1921) based on Nilothauma pictipenne Kieffer, 1921 from Africa
20 species are recorded from the New World; four species from the Nearctic Region and 16 from the Neotropical Region (Adam and Sæther, 1999; Mendes and Andersen, 2009)
It can be separated from Nearctic Nilothauma verrucum Adam and Sæther by having a wing length < 1.3 mm and an AR = 0.13, and by having a brown thorax, while the thorax in N. verrucum is greenish with brown vittae

Summary

Introduction

The genus Nilothauma was erected by Kieffer (1921) based on Nilothauma pictipenne Kieffer, 1921 from Africa. 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 (2014, 2016), and recently Niitsuma (2016) added one new species from Japan and placed Nilothauma sasai Adam and Sæther (1999) as a synonym of Nilothauma hibaratertium Sasa, 1993. 20 species are recorded from the New World; four species from the Nearctic Region and 16 from the Neotropical Region (Adam and Sæther, 1999; Mendes and Andersen, 2009).

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Conclusion