Corethrella Coquillett, 1902

Amaral, André P., Mariano, Rodolfo & Pinho, Luiz Carlos, 2023, Description of five new species of frog-biting midges (Diptera, Corethrellidae) from Brazil and examination of new morphological characters with utility for taxonomic and phylogenetic studies, European Journal of Taxonomy 874 (1), pp. 1-120 : 10-11

Subgenus Corethrella Coquillett, 1902

In our survey in Bahia, we collected 409 specimens representing 22 species (355 adult females, 40 adult males, 64 larvae and 94 pupae; some immatures did not reach the adult stage). With the material from the LSDip and CE-MHS collections, we recorded a total of 38 species. We describe five new species and provide complementary descriptions for the 33 remaining species, including pupal and larval stages of nine. Another 33 specimens grouped in seven morphotypes could not be accurately identified and might belong to undescribed species. An additional 284 individuals collected via frog-call traps or as immatures were only examined with a stereo microscope and are temporarily kept in vials of ethanol.

We provide a taxonomic key to the New World species (Appendix 2), which was modified from Borkent (2008) to include the five new species herein described and eleven other recently published species: Corethrella borkenti Amaral & Pinho, 2015 ; C. cabocla Feijó, Belchior, Marialva & Pessoa, 2021 ; C. cambirela Amaral, Mariano & Pinho, 2019 ; C. kipferi Dorff, Borkent & Curler, 2022 ; C. ielemdei Feijó, Ramires , Lima & Pessoa, 2021; C. menini Feijó, Picelli, Ríos-Velásquez & Pessoa, 2021 ; C. munteantaroku Amaral, Mariano & Pinho, 2019 ; C. stenostyla Amaral, Bello-González & Pinho, 2021 ; C. xokleng Amaral, Mariano & Pinho, 2019 ; C. yanomami Amaral, Mariano & Pinho, 2019 ; and C. yucuman Caldart & Pinho, 2016 . We also provide an updated list of Brazilian species ( Appendix 1) that includes publications with species descriptions and the distributions of the species in Brazil. For characters newly described, see Morphology remarks (below).

Due to incomplete descriptions of immatures in many species of Corethrella , the diagnoses of C. ananacola , C. infuscata , C. fulva and C. borkenti are restricted to their larval habitat, the bromeliads. Despite the evidence of strong habitat specialization, there are a few exceptions reported (see “Biology and distribution patterns of Corethrellidae from Brazil ” below). This weakness will be corrected once more complete descriptions of immatures are available.