Description of three new species of frog-biting midges (Diptera: Corethrellidae) from the Central Brazilian Amazon

Three species of Corethrella Coquillett, 1902 from the state of Amazonas, Brazil are described as new to science based on female adult specimens. Corethrella cabocla Feijo, Belchior, Marialva & Pessoa sp. nov. possesses four large setae on the frons between the ventromedial arca of ommatidia, a wide clypcus with 1-4 setae, a wing with the apex of R-2 basal to the apex of M-2 and with a midlength band, and with the abdomen entirely dark brown. Corethrella ielemdei Feijo, Ramires, Lima & Pessoa sp. nov. possesses an elongated coronal suture, four large setae on the frons between the ventromedial area of ommatidia, a clypeus squarish with 42-43 setae, a wing with the apex of R-2 basal to the apex of M-1 and with a midlength band and dark scales on the basal and subbasal areas of the anterior margin, legs with dark scales, and with the abdomen entirely dark brown. Corethrella menini Feijo, Picelli, Rios-Velasquez & Pessoa sp. nov. possesses wings with the apex of R-2 basal to the apex of M-2 and a midlength band, with darker basal scales along all veins, basal band dark scales on C, Sc, R, M, and Cu and the abdomen entirely dark brown. With the addition of the new species, the numbers of frog-biting midges described in the Amazon basin, Brazil and in Neotropical region are now 31, 49 and 80 species, respectively.