Ubatubaneura, a new genus of the Corynoneura group (Diptera: Chironomidae: Orthocladiinae) from the Brazilian Atlantic Forest Author Wiedenbrug, Sofia Author Trivinho-Strixino, Susana text Zootaxa 2009 1993 41 52 journal article 10.5281/zenodo.185594 5706d438-20d6-47b9-a014-cc1457000c5a 1175-5326 185594 Key to the larvae of the Corynoneura group The larva of Physoneura is unknown; the larva Notocladius is not keyed. 1. Small size, usually less than 4 mm ; procercus and posterior parapods distinct; antennal segments evenly sclerotized, with normal, short terminal segment; antennae at least as long as 1/2 head length, or if shorter then head capsule elongated, at least 1.5 times as long as wide, except in Ichthyocladius . Corynoneura group ...................................... 2 - Character combinations different.................................................................................................................... not keyed 2. Mentum with 16–20 dark, equal sized median and 5 pairs of slightly larger, lateral teeth; mandibular seta interna absent; larvae phoretic on catfishes ............................................................................................ Ichthyocladius Fittkau - Mentum not as above; mandibular seta interna usually present ................................................................................... 3 3. Antennae with 4 segments, subequal or longer than head ........................................................ Corynoneura , Winnertz - Antennae with 5 segments, shorter than head.............................................................................................................. 4 4. Antennal blade slightly longer than flagellum; antenna about 1/4 of head length ......................................................... ........................................................................................................................... Tempisquitoneura Epler et de la Rosa - Antennal blade much shorter than flagellum; antenna longer than 1/4 of head length ................................................ 5 5. Antenna about 1/3 of head length; 3rd antennal segment short; Lauterborn organs well developed, generally reach- ing end of 3rd segment; abdominal setae stout, dark and long.................................... Onconeura Andersen et Saether - Antenna at least 1/2 of head length; 3rd antennal segment usually long; Lauterborn organs usually reduced; abdomi- nal setae usually not as above ....................................................................................................................................... 6 6. Sub-basal seta of posterior parapod apically split ( Fig. 4 G) ....................................................... Ubatubaneura n. gen. - Sub-basal seta of posterior parapod simple ............................................................................. Thienemanniella Kieffer