The genus Labiobaetis (Ephemeroptera: Baetidae) in China, <br />with description of a new species

Abstract

Five species of the genus Labiobaetis (Baetidae) are recognized from China based on mature nymphs, including a new species, Labiobaetis ancoralis n. sp. and a new combination, Labiobaetis mustus (Kang & Yang) n. comb. The new species differs from L. multus (Müller-Liebenau) and L. pulchellus (Müller-Liebenau & Hubbard) by the spatulate submarginal setae on labrum and the apical segment of maxillary palpus with a pronounced excavation near apex. Imago stage of L. mustus (Kang & Yang) n. comb. is described for the first time based on male and female imagoes reared from nymphs, which can be distinguished from other known imagoes of Labiobaetis by the color pattern of abdominal terga and hind wing having a tiny vestigial costal process. All Oriental species previously transferred to Pseudocloeon are reassigned to Labiobaetis in the present paper. An identification key is provided to the known mature nymphs of Oriental Labiobaetis species.

The incredible diversity of Labiobaetis Novikova &amp; Kluge in New Guinea revealed by integrative taxonomy (Ephemeroptera, Baetidae)

“…However, Gattolliat (2001) contradicted this opinion by the reason that the larval stage of the type-species P.kraepelini Klapálek remained unknown and a complete analysis of the generic situation was therefore not possible, in the meantime, he also proposed to restrict the concept of Pseudocloeon to the type-species P.kraepelini , which is in line with a previous proposal of Waltz and McCafferty (1985,1987) and to wait with the final generic assignment of all the species until a global revision of these genera could be done based on material from their whole distribution range. This proposal is today generally followed by most authors (Fujitani et al 2003, McCafferty et al 2010, Kluge and Novikova 2011, 2014, 2016, Kubendran et al 2014, Shi and Tong 2014). Recently, Kluge and Novikova (2016) established a new tribe Labiobaetini including the genera Labiobaetis and Pseudopannota Waltz & McCafferty, 1987, based on a unique combination of imaginal and larval characters.…”

“…The genus Labiobaetis Novikova & Kluge, 1987 is one of the richest genera of Baetidae with 79 described species (Barber-James et al 2013, Webb 2013, Shi and Tong 2014, Kubendran et al 2014, 2015, Gattolliat et al 2018). However, 19 species have been described based on adults only, which are providing too limited characteristics for a clear differentiation of species and may cause difficulties to associate larval and imaginal stages at a later point in time.…”

The tremendous diversity of Labiobaetis Novikova &amp; Kluge in Indonesia (Ephemeroptera, Baetidae)

“…The genus Labiobaetis Novikova & Kluge, 1987 is one of the richest genera of Baetidae with 105 previously described species (Barber-James et al 2013, Webb 2013, Shi and Tong 2014, Kubendran et al 2014, 2015, Gattolliat et al 2018, Kaltenbach and Gattolliat 2018). The distribution of Labiobaetis is nearly worldwide, with the exception of the Neotropical realm and New Caledonia; it is widely diversified in the Afrotropical (28 species) and Oriental realms (23 species) as well as in New Guinea (32 species) (Lugo-Ortiz et al 1999, Gattolliat and Nieto 2009, Kaltenbach and Gattolliat 2018).…”

“…The distribution of Labiobaetis is nearly worldwide, with the exception of the Neotropical realm and New Caledonia; it is widely diversified in the Afrotropical (28 species) and Oriental realms (23 species) as well as in New Guinea (32 species) (Lugo-Ortiz et al 1999, Gattolliat and Nieto 2009, Kaltenbach and Gattolliat 2018). The status and validity of the genus has long been a subject of controversy, but today Labiobaetis is widely accepted as a valid genus (Lugo-Ortiz and McCafferty 1997, Lugo-Ortiz et al 1999, Gattolliat 2001, Fujitani et al 2003, Fujitani 2008, McCafferty et al 2010, Gattolliat and Staniczek 2011, Kluge and Novikova 2011, 2014, 2016, Kluge 2012, Webb 2013, Kubendran et al 2014, 2015, Shi and Tong 2014). The history and concept of the genus Labiobaetis were recently summarized in detail (Shi and Tong 2014, Kaltenbach and Gattolliat 2018).…”

“…The status and validity of the genus has long been a subject of controversy, but today Labiobaetis is widely accepted as a valid genus (Lugo-Ortiz and McCafferty 1997, Lugo-Ortiz et al 1999, Gattolliat 2001, Fujitani et al 2003, Fujitani 2008, McCafferty et al 2010, Gattolliat and Staniczek 2011, Kluge and Novikova 2011, 2014, 2016, Kluge 2012, Webb 2013, Kubendran et al 2014, 2015, Shi and Tong 2014). The history and concept of the genus Labiobaetis were recently summarized in detail (Shi and Tong 2014, Kaltenbach and Gattolliat 2018). All Oriental species previously transferred to Pseudocloeon (Lugo-Ortiz et al 1999) were formerly reassigned to Labiobaetis by Shi and Tong (2014).…”