Corethrella (Corethrella) yanomami Amaral, Mariano & Pinho 2019
Creators: name: Amaral, André P.
name: Mariano, Rodolfo
name: Pinho, Luiz Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Corethrellidae
Corethrella
Corethrella yanomami

description: Corethrella (Corethrella) yanomami Amaral, Mariano & Pinho, 2019
Fig. 43; Appendix 1
Material examined
Holotype
BRAZIL – Amazonas State • ♀, adult; Barcelos, Parque Estadual Serra do Aracá, Igarapé da anta (banho), S02; 00°54ʹ30ʺ N, 63°26ʹ24ʺ W; 1105 m a.s.l.; 25 Jul. 2009; N. Hamada et al. leg.; Pennsylvania trap; INPA.
Description
Female adult (n = 1)
HEAD (Fig. 43A). Sensilla: Ocular row with 1 thick offset seta on ventral part, 1 more dorsal, and 12 setae shortly extending posteriorly. Subocular row not well-defined anteriorly, with 8 slender posterior setae; vertex with a few additional slender setae. Postgenal row with 10 slender setae, ranging from posterior end of ocular row to subventrally. With 2 thick ventromedial setae.
THORAX (Fig. 43B). Sensilla: Antepronotum with 1 slender anterodorsal seta and 4 intermediate setae ventrolaterally. Postpronotum with 1 thick, 1 intermediate, and 1 slender dorsal setae. Scutum, prescutal area with 2 thick setae near prescutal suture and 3 slender ones more posteriorly; anterior portion with 4 slender ventral setae. Antealar area with 10 thick/intermediate and 7 slender setae scattered on ventral part. Supraalar area with 1 thick seta, surrounded by 9 slender setae. Dorsocentral row, posterior part with cluster of 5 thick setae; about 18 thick/intermediate and approximately 31 slender setae completing row. Scutellum with 8 thick setae. Posterior anepisternum bare. Anepimeron with 5 slender setae.
WING. R 3 /R 1: 0.59; R 2+3 /R 2: 0.59.
LEGS. Empodium (Amaral et al. 2019: 115, as fig. 7f) of intermediate length and thickness, with 3 branches. Ta1/Ta2: 2.86; Ta3/Ta4: 1.25.
Distribution and biology
The specimen examined is the holotype, described in Amaral et al. (2019): “This species is known from a single female specimen collected with a light trap in Barcelos municipality, Amazonas state. Aracá State Park is in a mountainous region of Amazon forest, the Tepuis, near the Brazilian border with Venezuela.” The altitude recorded was 1105 m a.s.l.
Remarks
Four specimens collected with light trap in Uruçuca, Bahia keyed out to Corethrella yanomami but differed with regard to the number of clypeal setae (3–4), posterior dorsocentral setae (3–4), flagellomere VIII without a sensillum coeloconicum, and empodium with two branches. These differences may represent intraspecific variation, but conservatively, they were not included in the present study. Since C. yanomami was described based on a single specimen, it is important to try to collect more individuals at the type locality in order to better assess the morphological variation of the species.
description: Published as part of 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, pp. 1-120 in European Journal of Taxonomy 874 (1) on pages 87-88, DOI: 10.5852/ejt.2023.874.2135, http://zenodo.org/record/8037742