Cepa simonettii Barahona-Segovia, 2019

Barahona-Segovia, Rodrigo M. & Barceló, Matías, 2019, A new flower fly species of Cepa Thompson & Vockeroth (Diptera: Syrphidae) from the Valdivian evergreen forest hotspot, Chile, Zootaxa 4612 (3), pp. 431-439 : 433-434

Cepa simonettii Barahona-Segovia sp. nov.

Figs 1 –4

Holotype. Female, in excellent condition, found in the Ernesto Krahmer’s collection from UACH and finally deposited in the MNHNCL; with the following labels: “Santo Domingo, Valdivia / 22.ix.1987 / Leg. E. Krahmer ”; “ Holotypus / Cepa simonettii / spec. nov. ♀ / det. Barahona-Segovia 2018” [red].

Type locality. Chile: Valdivia Province , Santo Domingo River, - 39.903358°S, - 73.177680°W, 47 m asl .

Diagnosis. Dark-bluish metallic species. Lunule orange; without frontal protuberance; frons somewhat swollen. Arista and eye bare. Hyaline wing except for the brown-pigmented pterostigma; wing entirely microtrichose. Crossvein r-m located slightly beyond the end of subcostal vein.

Description. Length: 6.8 mm; Wing: 6.6 mm. FEMALE. Head: dark-blue, shiny, with fine punctuation and black pilosity; face concave, without frontal protuberance. Gena black with short and scarce white pilosity; lunule dark orange and bare ( Fig. 1 ). The space between the eyes (i.e. frons width) is as long as the antenna length. Ocellar triangle in the vertex with pale orange ocelli, occupying approximately the medial 1/3 of vertex and scarcely protuberant ( Fig. 2 ); occiput reduced laterally with short and black pile. Bare reddish eye. Scape, pedicel and basoflagellomere black. Scape and pedicel in a 1:1 ratio. Basoflagellomere five times longer than the scape and pedicel together. Arista black and bare. Thorax: Mesonotum dark-blue, shiny with short black pilosity ( Figs. 2 , 3). Postpronotum with sparse pilosity. Anterior spiracle with white pilosity. Anterior anepisternum flattened; posterior anepisternum convex with large and dark pilosity dorsally ( Fig. 3 ). Anepimeron with sparse and continuous pilosity. Katepisternum with short and black pilosity ( Fig. 3 ). Metasternum with long pilosity. Scutellum with apical marginal sulcus and black erected pilosity ( Fig. 3 ). Legs: Coxae, trochanters, and femora dark blue to brown; tibiae, tarsi and claws dark brown. The anterior femora with short black pile; middle and posterior femora with black pile longer than those on the anterior femora. Wing (Fig. 4): entirely microtrichose, hyaline, except pterostigma brown pigmented in color. Cell r 4+5 blunt apically. Crossvein r-m placed in the basal third of cell dm, slightly beyond (more apical) the end of the vein sc. Dorsal and ventral calypters pale; margin with large pale pilosity. Halter entirely black. Abdomen: blackish brown, stocky, strongly curved ventrally at 3 rd segment; with fine black pilosity on both tergites and sternites. Fine punctuation in all abdominal tergites; 5 th tergite light brown and with fine and dense punctuation.

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Figures

FIGURE 1. Cepa simonettii Barahona-Segovia sp. nov., female, head, anterior view.

FIGURE 2. Cepa simonettii Barahona-Segovia sp. nov., female, dorsal view

FIGURE 3. Cepa simonettii Barahona-Segovia sp. nov., female, lateral view.