Iporangomberus pei n. gen., n. sp. is described and illustrated based on an adult male from Mata Atlântica in southeastern Brazil. This genus can be separated from other Orthocladiinae based on the combination of hairy eyes; decumbent acrostichals starting close to antepronotum; bare wing; squama with few setae; R4+5 ending distal to M3+4; curved, apically spoon-shaped phallapodeme; and simple, subquadrangular gonostylus with well developed heel.
Chironomidae; Orthocladiinae; Iporangomberus; new genus; new species; Brazil; Neotropical region; Mata Atlântica
