Quichuana citara Montoya & Wolff

Montoya, Augusto L., Ricarte, Antonio & Wolff, Marta, 2017, Two new species of Quichuana Knab (Diptera: Syrphidae) from the paramo ecosystems in Colombia, Zootaxa 4244 (3), pp. 390-402 : 393-395

Quichuana citara Montoya & Wolff sp. n.

Figures 1 , 3 A–G, 4A–B, 5A–C.

Length (n = 6). Body 12.8–13.5 mm; wing 9.5–10.3 mm.

Diagnosis. Large species (up to 13.5 mm) with a broad black abdomen. The species is characterized by two faint, medial, white pollinose vittae on scutum, extending anteriorly to transverse suture; pleuron pale pilose; wing and alula extensively microtrichose; capitulum black; coxae white pilose; terga I–V with golden yellow and black pile intermixed and a yellow pollinose band on posterior margin; surstylus slightly convex on ventral margin; cercus triangular-shaped, with rounded margins; hypandrium rounded apically, ventrally pilose on apical half.

Description. MALE. Head ( Figs 3 A and C). Face black with a distinct bare tubercle, white pollinose, yellow pilose, with a shiny medial vitta from the antenna to the mouth edge. Gena broad, shiny black. Lunule black, except for the area closest to the eye margin; frontal triangle mainly black pilose, except for the golden yellow pile along the eye margin. Antenna black, black pilose; basoflagellomere dark brown, rounded to oval, white pollinose, bf = 1.23; scape black pilose; pedicel golden yellow pilose ventrally, black pilose dorsally; arista orange, bare. Eye white pilose, bare along the posterior margin; frontal vertical triangle golden yellow pollinose on anterior corner. Ocelli yellowish orange; ocellar triangle black pilose. Occiput white pollinose, golden pilose with a line of long black pile intermixed on dorsal half. Thorax ( Figs 3 C–F). Black, dull; scutum faint brownish pollinose, black and golden yellow pilose intermixed, with two faint, medial, white-pollinose vittae extending anteriorly to transverse suture; postpronotum, notopleuron and postalar callus with golden yellow and black pile intermixed; posterior anepisternum golden yellow pilose dorsally, with some black pile intermixed; pleuron dull, grayish-black pollinose; katepisternum pale pilose; katatergum with some short brownish pile; scutellum brownish, with long black pile; metasternum with short pale pile; calypter brown, brown pilose marginally; plumula brown; spiracular fringe brownish; halter pedicel brownish; capitulum black. Wing ( Figs 3 F, 4A). Entirely microtrichose, slightly infuscate on anterior margin (cells c, sc, r1 r4+5, dm and bm); tegula and basicosta black pilose, alula extensively microtrichose. Legs ( Figs 3 C, 4B). Black, extensively black pilose; coxae black, white pilose, except black pilose antero-dorsally on metacoxa; trochanters with black and golden yellow pile intermixed; femora black, black pilose, except white pilose postero-ventrally on pro and mesofemur; metafemur swollen, with long black pile ventrally; tibiae black, black pilose, except brownish pilose posteriorly; tarsi black, black pilose dorsally, orange pilose ventrally; mesotarsus with rows of ventral black pile. Abdomen ( Fig. 3 B). Black; terga II–III with golden yellow and black pile intermixed, with a yellow band on posterior margin; tergum I with a moustache arrangement of sparse golden yellow pile; tergum II golden pilose on antero-lateral half, black pilose postero-medially; tergum III golden yellow pilose on antero-lateral half, black pilose postero-medially; terga IV–V extensively golden pilose; tergum V golden yellow pollinose; sterna dark brown; sterna I–V with golden yellow pile and some black pile intermixed laterally. Genitalia ( Figs 6 A–C): Surstylus slightly convex on ventral margin, concave dorsally; cercus triangular-shaped, with rounded margins; hypandrium rounded apically, ventrally pilose on apical half. FEMALE ( Figs 3 D–E). Same as in male except for the following characters: frons with a small white pollinose macula halfway between the anterior ocellus and the antennal insertions; eyes separated dorsally by a distance equal to the ocellar triangle width; scutum and pleuron with golden yellow and black pile intermixed, mainly golden yellow pilose; tergum IV black pilose on basal half.

Material examined. HOLOTYPE: male, deposited at the CEUA, and labelled: “ COLOMBIA: Antioquia, Andes, Santa Rita , paramo de Santa Rita , Laguna Santa Rita / 5.5499389, -75.9912444, 3611-3638m / 2010. xii.8- 12, A. L. Montoya Leg. “ Holotype / Quichuana citara / Montoya & Wolff 2017” [red, handwritten except first line] ( CEUA 87046 )” . PARATYPES: COLOMBIA: Antioquia, Andes, Santa Rita , paramo de Santa Rita , Laguna Santa Rita / 5.5499389, -75.9912444, 3611-3638m, 2010. iii.3-5, M. Wolff Leg. (7 ♀, CEUA 87045, 92804 , 92805, 92806, 92807, 92808, 92809); Andes, Santa Rita, paramo de Santa Rita , Laguna Santa Rita / 5.5499389, - 75.9912444, 3611-3638m, 2010. xii.8-12, A. L. Montoya Leg. (2 ♀, CEUA 87045, 92810 , 92811); Urrao, paramo de Frontino, La Peña Leg / 6.451542, -76.129260 , 3466-3670m / 2014. ix.07, A. Franco-H. Leg (1 ♂ and 1 ♀, MEFLG 27709, 27715).

Distribution. Western and eastern slopes of the Cordillera Occidental, Antioquia, Colombia in the paramos between 3466–3670 m. a. s. l. ( Fig. 1 ).

Etymology. The noun in apposition ‘citara’ refers to the indigenous people ‘Citaraes’ or ‘Chocoes’, who inhabited the named region “Farallones de Citará ” (Northwest of Antioquia Department, Colombia), type locality of this species.

Habitat and co-occurrence with other flower fly species. Quichuana citara sp. n. is present in paramo habitats of western and eastern slopes of the Cordillera Occidental (Farallones de Citará and paramo de Frontino), occurring in sympatry with Argentinomyia altissima (Fluke) , A. tropica (Fluke) , Eristalis tenax Linnaeus , Meropidia neurostigma Hippa , Palpada cf. monticola (Roder) , P. scutellaris (Fabricius) , Platycheirus fenestratus (Macquart) , P. hesperius (Macquart) , Salpingogaster cornuta Hull , Syrphus octomaculatus Walker and Tuberculanostoma antennatum Fluke.

Figures

FIGURE 1. Distribution map of Quichuana citara sp. n., Q. nigropilosa sp. n., Q. cf. fasciata, Q. dolorosa and Q. quixotea in Colombia.

FIGURE 3. Quichuana citara sp. n., male, holotype (CEUA 87046). A: head, frontal view; B: abdomen, dorsal view; C: lateral view; F: right wing, dorsal view. Quichuana citara sp. n., female, paratype (CEUA 87045). D: head, frontal view; E: abdomen, dorsal view.

FIGURE 6. Quichuana nigropilosa sp. n., female, holotype (CEUA 87092). A: head, frontal view; B: lateral view; C: abdomen, dorsal view; D: right wing, dorsal view.