Abstract
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 Feijó, Belchior, Marialva & Pessoa sp. nov. possesses four large setae on the frons between the ventromedial area of ommatidia, a wide clypeus with 1–4 setae, a wing with the apex of R2 basal to the apex of M2 and with a midlength band, and with the abdomen entirely dark brown. Corethrella ielemdei Feijó, 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 R2 basal to the apex of M1 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 Feijó, Picelli, Ríos-Velásquez & Pessoa sp. nov. possesses wings with the apex of R2 basal to the apex of M2 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.
Highlights
The monogeneric family Corethrellidae Edwards,1932 is a widely distributed family in the tropical and subtropical areas (Borkent 2008) where species of the genus Corethrella Coquillett, 1902 locate their anuran hosts by sound instead of chemical cues (McKeever 1977; McKeever & Hartberg 1980; Toma et al 2005; Bartlett-Healy et al 2008; Borkent 2008; Bernal & de Silva 2015; Camp & Irby 2017)
The Neotropical region possesses the highest richness of species of Corethrella with 77 registered species (Amaral 2018; Amaral et al 2019), of which 28 species are from the Amazon basin (Borkent 2014; Amaral et al 2019)
Four large setae on frons between ventromedial area of ommatidia; clypeus wide, with one or four setae; antenna with flagellomere one and two darker brown while the others are light brown, flagellomere I with four sensilla coeloconica, flagellomere II with one sensillum coeloconicum, flagellomeres VIII– XIII each with a single sensillum coeloconicum; posterior portion of the dorsocentral row with a group of about six elongate setae; wing with apex of R2 basal to apex of M2 and with midlength band; abdomen entirely dark brown
Summary
The monogeneric family Corethrellidae Edwards,1932 is a widely distributed family in the tropical and subtropical areas (Borkent 2008) where species of the genus Corethrella Coquillett, 1902 locate their anuran hosts by sound instead of chemical cues (McKeever 1977; McKeever & Hartberg 1980; Toma et al 2005; Bartlett-Healy et al 2008; Borkent 2008; Bernal & de Silva 2015; Camp & Irby 2017). The genus Corethrella includes 115 extant species and 10 extinct species. These insects have a semi cosmopolitan distribution with vast majority of extant species restricted to the tropics and subtropics (Kvifte & Bernal 2018; Amaral et al 2019; Baranov et al 2019). The Neotropical region possesses the highest richness of species of Corethrella with 77 registered species (Amaral 2018; Amaral et al 2019), of which 28 species are from the Amazon basin (Borkent 2014; Amaral et al 2019)
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