Helina discolor Stein 1911
Creators: name: Patitucci, Luciano Damián
name: Mulieri, Pablo Ricardo
name: Mariluis, Juan Carlos
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Lonchaeidae
Helina
Helina discolor

description: Helina discolor (Stein, 1911)
(Figs. 7, 9 F)
For a complete list of references, see the catalog by Carvalho et al. (2005).
Information subsequent to this catalog: Löwerberg-Neto et al. 2011 (biogeography); Löwerberg-Neto & Carvalho 2013 (checklist), Pont 2013 (type specimens).
Redescription. Male (Fig. 7 A). Length. Body: 6.26–7.68 mm, wing: 4.90–6.42 mm.
Head (Fig. 7 B). Black with silver pollinosity. Holoptic, the shortest distance between eyes is 0.23–0.27 mm. 8– 10 pairs of frontal setae. Eye hairs long and sparse. Lunule dark brown; fronto-orbital plate, parafacial, gena, postgena, and occiput black with silver pollinosity. Parafrontal plate bare. Postocular setae proclinate. Antenna black; arista with its longest hairs hardly longer than its basal diameter. Palpus black.
Thorax (Fig. 7 C). Scutum black with two poorly defined white pollinose vittae; scutellum black with grey pollinosity; anepisternum, anepimeron, katepimeron, katepisternum, proepisternum, proepimeron and meron black; anterior and posterior spiracles dark brown. Chaetotaxy: acrostichal setae 1-2+1; dorsocentral setae 2+4; humeral setae 3; notopleural setae 2, of similar size. Prealar strong, less than one fourth of the length of the anterior supra-alar postsutural seta. Scutellum with short and strong basal and subapical setae. Anepisternum with a series of 8–10 strong setae.
Wing. Yellow-brownish; costal spine little longer than the costal bristles; the transverse cross-vein dm-cu strongly curved; vein R 4+5 and vein M straight; cross vein dm-cu at middle of cell r4+5. Both calypters hyaline with yellow margins.
Legs. Coxa and trochanter black. Fore femur and tibia black; mid and hind femora with basal half black and mid and hind tibia brownish-yellow. Fore femur with rows of dorsal, posterodorsal, and posteroventral setae; fore tibia with one posterior seta, four strong preapical setae. Mid femur with 3–4 setae in the basal third on ventral surface; and 3 preapical setae on anterodorsal to posterior surface; mid tibia with 2 anterodorsal setae, 3–4 posterior setae, and one strong posteroventral seta at middle; and 4 apical setae (anterodorsal, posteroventral, ventral, and anteroventral). Hind femur with anterodorsal row and 5–7 setae in the apical middle of anteroventral surface; hind tibia with 4 anteroventral setae, 4 anterodorsal setae and 6–7 posterodorsal setae, calcar absent. Fore claws and pulvilli longer than mid and hind.
Abdomen (Fig. 7 D). Dark brown with brown-golden pollinosity. Sternite 5 longer than wide, with several strong setae on the apical third; posterior margin with two rounded processes (Fig. 7 E).
Terminalia. Cercal plate with a similar length and width; with a distal incision, and with two protuberances at the apex (Fig 7 F). Surstylus short than cercal plate, broad, and curving inward distally (Figs. 7 F–G). Aedeagus with aedeagal apodeme curved and strongly sclerotized; epiphalus sclerotized, paramere slightly bent downward with setula; gonopod with short setulae; and distiphallus tubular, slightly sclerotized (Fig. 7 H).
Material examined. ARGENTINA: Neuquén: 3 males, Cerro Chapelco, -40.197050, -71.298453, II-2011, Mariluis leg. (MACN); 1 female, Cerro Chapelco, -40.197050, -71.298453, 21-28-III-1983, Gentili leg. (IFML); Santa Cruz: 1 male, El Calafate, -50.321674, -72.263421, X-1994, Mariluis leg. (MACN); 3 males, PN Los Glaciares, Península Magallanes, Río Mitre, -50.418967, -72.742651, II-1995, Mariluis leg. (MACN), Tierra del Fuego: 1 male, Río Grande, -53.785843, -67.702577, II-1998, Mariluis leg. (MACN).
Distribution (Fig. 9 F). ARGENTINA: Neuquén (new record), Río Negro, Santa Cruz (new record), Tierra del Fuego (new record). PERU: Cuzco, Potosí.
Remarks. Stein (1911) described Mydaea discolor with male and females specimens from Cuzco, Perú. Subsecuently, Malloch (1934) recorded this species from Bariloche, Argentina. We provided a redescripton of the male, and for the first time, the description the male terminalia. No females were collected. (see comments on H. neosimplex).
Biology. The specimens captured by JCM in Santa Cruz province and Tierra del Fuego province were collected over rotten meat with a hand net.
description: Published as part of Patitucci, Luciano Damián, Mulieri, Pablo Ricardo & Mariluis, Juan Carlos, 2016, Taxonomic review of the species of Helina R. - D. (Diptera: Muscidae) from Andean-Patagonian forests, pp. 281-313 in Zootaxa 4150 (3) on pages 296-297, DOI: 10.11646/zootaxa.4150.3.3, http://zenodo.org/record/265618