Corethrella (Corethrella) lepida Borkent 2008

Corethrella (Corethrella) lepida Borkent, 2008 Fig. 29; Appendix 1 Material examined BRAZIL – Bahia State • 2 ♀♀, adults; Maraú, Cassange; 13°59ʹ16ʺ S, 38°57ʹ03ʺ W; 13 m a.s.l.; 28 Sep. 2019; A.P. Amaral leg.; frog-call trap (chorus); CE-MHS • 1 ♀, adult; same collection data as for preceding, except frog-call trap (Physalaemus signifer); CE-MHS • 2 ♀♀, adults; same collection data as for preceding, except CDC trap; CE-MHS • 1 ♀, adult; Ilhéus, Cabruca da UESC; 14°47ʹ37ʺ S, 39°10ʹ25ʺ W; 35 m a.s.l.; 16 Jul. 2019; A.P. Amaral leg.; frog-call trap (Boana faber); CE-MHS. Description Female adult (n = 6) HEAD. Sensilla (Fig. 29A): Ocular row with 2 thick offset setae at ventral part and 12–15 setae extending shortly beyond vertex. Subocular row well defined, with about 14 slender setae; vertex and interocular space with several setae. Postgenal row with 5–9 slender setae located mid-posteriorly. With 2–3 thick ventromedial setae. THORAX. Sensilla (Fig. 29B): Antepronotum with 3 thick ventrolateral setae and 6 slender/intermediate setae more dorsally. Postpronotum with 1 thick dorsal seta; 1 intermediate and 1 slender seta more posteriorly. Scutum, prescutal area anterior portion with group of about 10 thick/intermediate setae; 3 thick/intermediate setae loosely aligned dorsoventrally near prescutal suture; row of 7 slender, more posterior setae from ventral to dorsal portion. Antealar area with 3–5 thick/intermediate setae vertically aligned near prescutal suture; more posteriorly with 4–6 thick and 3–4 intermediate setae forming a U-shape on ventral region; about 13–20 slender setae spread in between. Supraalar area with 2 thick and 1 intermediate setae anteroposteriorly aligned, with 14–16 slender surrounding. Dorsocentral row, posterior part with group of 5 thick offset setae; 18–22 thick/intermediate and 20–27 slender setae completing the row. Scutellum with 12–14 thick setae. Posterior anepisternum bare. Anepimeron with 8–15 slender setae. WING. R 3 /R 1: 0.51 (0.49–0.54); R 2+3 /R 2: 0.61 (0.50–0.67). LEGS. Empodium (Fig. 29C) short, slender, with 3 branches. Ta1/Ta2: 2.57 (2.47–2.75); Ta3/Ta4: 1.05 (1.00–1.11). Distribution and biology This is the first record of Corethrella lepida both from the state of Bahia and from the Brazilian Northeast region. The specimens studied were captured with frog-call pan traps (playing the calls of Boana faber and Physalaemus signifer) and a CDC trap. Trapping sessions were near a pond, a coastal lake, and a small stream in the Atlantic forest at altitudes ranging from 13 to 35 m a.s.l. This species is otherwise known from Costa Rica, Trinidad and Tobago, Guyana, and French Guiana, at altitudes ranging from 5 to 100 m a.s.l. (Borkent 2008). Remarks Examined specimens closely matched the description of C. lepida, only lacking a sensillum coeloconicum on flagellomere VIII.
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 61-62, DOI: 10.5852/ejt.2023.874.2135, http://zenodo.org/record/8037742
{"references":["Borkent A. 2008. The frog-biting midges of the world (Corethrellidae: Diptera). Zootaxa 1804 (1): 1 - 456. https: // doi. org / 10.11646 / zootaxa. 1804.1.1"]}