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

Abstract

-Nilothauma canaima n. sp. from Bolı´var 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 < 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.

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

“…duena Roback, 1960 from the Peruvian Amazon. In their revision of Nilothauma, Adam & Saether, (1999) regarded the two species as not belonging to Nilothauma since they lack any projections on tergite IX and stated that they appear to belong in Paratendipes Kieffer. Later, Mendes and Andersen (2009) placed Neelamia Soponis and Paranilothauma Soponis as synonyms of Nilothauma and several new Neotropical species have been described demonstrating the large morphological variation in the genus.…”

“…17C). The species was originally described from the Amazonas State by Andersen et al (2016); the range is now extended to the Rondônia and Roraima States in the Brazilian Amazon.…”

“…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.…”