Helina australis Carvalho & Pont in Carvalho et al. 1993
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 australis

description: Helina australis Carvalho & Pont in Carvalho et al.1993
(Figs. 3, 9 B)
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).
Redescription. Male (Fig. 3 A). Length. Body: 6.74–7.03 mm, wing: 5.81–6.97 mm.
Head (Fig. 3 B). Black with silver pollinosity. Holoptic, the shortest distance between eyes is 0.13–0.14 mm. 6– 8 pairs of frontal setae. Eye hairs long and sparse. Lunule pale brown; fronto-orbital plate, parafacial, gena, postgena, and occiput black with silver pollinosity. Parafrontal plate bare. Postocular setae proclinate. Antenna black; arista with hairs three times as long as its basal diameter. Palpus black.
Thorax (Fig. 3 C). Scutum black with three grey pollinose vittae, the central vitta is inconspicuous; scutellum black with grey pollinosity; anepisternum, anepimeron, katepimeron, katepisternum, proepisternum, proepimeron and meron black; anterior and posterior spiracles brown. Chaetotaxy: acrostichal setae 1-2+1; dorsocentral setae 2+4; humeral setae 3, the inner one shorter and thinner; notopleural setae 2, of similar size. Prealar seta strong, half as long as its anterior supra-alar postsutural seta. Scutellum with thinner and short basal and subapical setae. Anepisternum with a series of 8–10 strong setae.
Wing. Yellowish-brown; costal spine little longer than the costal bristles; the transverse cross-vein dm-cu strongly curved; vein R 4+5 and vein M diverge apically; vein R 4+5 and vein M diverge apically; cross vein dmcu in basal half of cell r4+5. Both calypters yellow with yellow margins.
Legs. Coxa and trochanter black; femora and tibiae yellow, tarsi dark brown. Fore femur with rows of dorsal, posterodorsal, and posteroventral setae; fore tibia with one posterior seta, 4 preapical seta. Mid femur with only 3– 4 setae in the basal middle on ventral surface; 3 preapical setae on dorsal to posterior surface; mid tibia with 4 posterior setae and 4 apical setae (anterodorsal, posteroventral, ventral, and anteroventral). Hind femur with an anterodorsal row of setae and 6–7 setae in the apical middle of anteroventral surface; hind tibia with 2–3 anteroventral setae, 2 anterodorsal setae and 2–3 posterodorsal setae, calcar absent. Claws and pulvilli of similar size in all three legs.
Abdomen (Fig. 3 D). Black with brown pollinosity, with little spots on the base of each seta. Sternite 5 with similar length and width, with two long setae on apical third; posterior margin membranous with two projections (Fig. 3 E).
Terminalia. Cercal plate with a similar length and width, with two incision (distal and proximal); with four protuberances at the apex: inner protuberance long and straight, outer protuberance short and straight (Fig. 3 F), curved backwards of the inner protuberance in lateral view (Fig. 3 G). Surstylus broad basally, distal part curved strongly forwards, on inner surface with setae in a button-shaped structure (Fig. 3 G). Aedeagus with aedeagal apodeme curved and strongly sclerotized; epiphalus slightly sclerotized, paramere slightly bent downward with setula; gonopod with short setulae; and distiphallus tubular, slightly sclerotized (Fig. 3 H).
Female. Length. Body: 5.23–6.75 mm, wing: 5.63–6.15 mm.
Differs from male as follows: Color: black with grey pollinosity (Fig. 3 I). Head: dichoptic, the shortest distance between eyes is 0.66–0.86 mm; fronto-orbital plate setulose with 2 reclinate orbital setae. Parafrontal plate setulose. Thorax. Black with grey pollinosity, scutum brown with three grey pollinose vittae (Fig. 3 J). Legs. Hind femur with 2–3 setae in the apical third of anteroventral surface; hind tibia with 3 anteroventral setae, 2 anterodorsal setae and without posterodorsal setae.
Terminalia. Tergite 8 with 2 parallel sclerotized plates, fused and with setulae on the distal margin; epiproct with proximal margin straight, and setulose, cercus digitiform with long setulae (Fig. 3 K). Hypoproct rounded, sclerotized, with long setula on distal margin (Fig. 3 L).
Material examined. ARGENTINA: Chubut: 1 male, PN Lago Puelo, Gendarmería, -42.097468, - 71.681953, I-2012, Mulieri & Patitucci leg. (MACN), 2 females, PN Los Alerces, Lago Futalaufquen, -42.840982, -71.632934, 14-I-1962 (MACN), 3 females, PN Los Alerces, Cabaña. La Cascada, -42.888499, -71.592376, II- 2013, Olea, Mulieri & Patitucci leg. (MACN); Neuquén: 1 male, San Martín de los Andes, I-1941, Bridarolli leg. (MACN), 1 female, PN Nahuel Huapí, Puerto Arrayanes, Villa Trafúl, -40.612373, -71.545571, 31-I-1968, Stange leg. (IFML). CHILE: Región de los Lagos: 3 females, 1 male, Osorno, Pucatrihue, -40.563537, -73.284407, 1/ 12- II-1980, Peña leg. (MACN), 1 female, Colonia El Chingue, -42.404234, -72.695709, 20/ 25-I-1990, Peña leg. (MACN).
Distribution (Fig. 9 B). ARGENTINA: Chubut (new record); Neuquén (new record). CHILE: Región de los Lagos.
Remarks. Bigot (1885) described Yetodesia dubia with only one male specimen from an unspecified location of Chile. Later, Stein (1907) presented a brief redescription of the type specimen, and Malloch (1934) redescribed the species with new male specimens collected from Casa Pangue, Chile. Carvalho & Pont (Carvalho et al. 1993) established a junior primary homonym of dubia Meade, 1881, and renamed the species as Helina australis. In this work, we provide a redescripton of the male and description of the female, including details of male and female terminalia.
Biology. Unknown. The specimens studied in this work were collected from PNLP and PNLA with a Malaise trap.
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 287-289, DOI: 10.11646/zootaxa.4150.3.3, http://zenodo.org/record/265618