Helina xena Malloch, 1934

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, Zootaxa 4150 (3), pp. 281-313 : 308-310

publication ID

https://doi.org/ 10.11646/zootaxa.4150.3.3

publication LSID

lsid:zoobank.org:pub:79657D7A-324F-4539-A80F-E11BB4189753

DOI

https://doi.org/10.5281/zenodo.6088881

persistent identifier

https://treatment.plazi.org/id/03F65F6E-F047-FFD9-FF6C-FAFAFB762CE8

treatment provided by

Plazi

scientific name

Helina xena Malloch, 1934
status

 

Helina xena Malloch, 1934

( Figs. 14 View FIGURE 14 , 15 View FIGURE 15 F)

For a complete list of references, see the catalog by Carvalho et al. (2005).

Information subsequent to this catalog: Löwerberg-Neto & Carvalho 2009 (endemism). Löwerberg-Neto et al. 2011 (biogeography); Löwerberg-Neto & Carvalho 2013 (checklist).

Redescription. Male ( Fig. 14 View FIGURE 14 A). Length. Body: 6.31 mm, wing: 5.94 mm.

Head ( Fig. 14 View FIGURE 14 B). Black with silver pollinosity. Holoptic, the shortest distance between eyes is 0.16 mm. 4–5 pairs of frontal setae. Eye bare. Lunule brown; fronto-orbital plate, parafacial, gena, postgena, and occiput black with silver pollinosity. Antenna black; arista with hairs shorter than its basal diameter. Palpus black.

Thorax ( Fig. 14 View FIGURE 14 C). Scutum black with four brownish-grey pollinose vittae; scutellum black with brownishgrey pollinosity; anepisternum, anepimeron, katepimeron, katepisternum, proepisternum, proepimeron and meron black with grey pollinosity; anterior spiracle black and posterior spiracle brown. Chaetotaxy: acrostichal setae short, the seta before the scutellum longer than previous seta; dorsocentral setae 2+3; humeral setae 2; notopleural setae 2, of similar size. Prealar seta strong, shorter than one fourth of the length of the anterior supra-alar postsutural seta. Scutellum with strong and short basal and subapical setae. Anepisternum with a series of 6–8 strong setae.

Wing. Yellowish-brown; costal spine longer than the costal bristles; the cross-veins with cloud; the cross-vein dm-cu straight, an extra little cross-vein close to cross-vein r-m; vein R 4+5 and vein M straight; cross vein dm-cu in basal half of cell r4+5. Both calypters hyaline with yellow margins.

Legs. Coxa and trochanter black; fore femur black, yellow at base; mid and hind femora yellow, with black on apical third; tibiae yellow, tarsi black. Fore femur with rows of dorsal, posterodorsal, and posteroventral setae; fore tibia with one posterior seta, 4 preapical setae. Mid femur with 6–7 setae in the basal middle on ventral surface, a row of anterodorsal seta, and 3–4 preapical setae on dorsal to posterior surface; mid tibia with 2 posterior setae and 4 apical setae (anterodorsal, posteroventral, ventral, and anteroventral). Hind femur with anterodorsal row, anteroventral row of setae and 3–4 setae in the apical middle of posteroventral surface; hind tibia with 2–3 anteroventral setae, and one anterodorsal, calcar absent. Claws and pulvilli of similar size in all three legs.

Abdomen ( Fig. 14 View FIGURE 14 D). Black with brown pollinosity, two dark brown spots on tergite 3 and 4. Sternite 5 longer than wide, setulose; posterior margin membranous ( Fig. 14 View FIGURE 14 E).

Terminalia . Cercal plate with a similar length and width, with only a distal incision; and with four protuberances at apex: inner protuberance short and rounded, outer protuberance lobed shape, and straight in lateral view; epandrium with lateral projection ( Figs. 14 View FIGURE 14 F–G). Surstylus broad and curving forwards distally, with some setae on inner surface ( Figs. 14 View FIGURE 14 F–G). Aedeagus with aedeagal apodeme straight and strongly sclerotized; epiphalus slightly sclerotized, paramere slightly bent downward with setula; gonopod with short setulae; and distiphallus campanullate, slightly sclerotized ( Fig. 14 View FIGURE 14 H).

Female. Length. Body: 4.95 mm, wing: 5.15 mm.

Differs from male as follows: Head: dichoptic, the shortest distance between eyes is 0.69 mm; fronto-orbital plate setulose with 2 reclinate orbital setae. Parafrontal plate setulose. Legs. Mid femur with 3–4 strong of setae in the basal third on ventral surface.

Terminalia . Tergite 8 with 2 parallel sclerotized plates with setulae on distal margin; epiproct with proximal margin straight, and a row of setula on distal margin, cercus digitiform with long setulae ( Fig. 14 View FIGURE 14 I). Hypoproct rounded, sclerotized, and setulose ( Fig. 14 View FIGURE 14 J).

Material examined. ARGENTINA: Chubut: 1 female, PN Los Alerces, Cabaña La Cascada, -42.888499, - 71.592376, II-2013, Patitucci leg. ( MACN) ; 1 male, PN Los Alerces, Puerto Limonao, Lago Futalaufquen, - 42.862656, -71.624142, II-1959, Trelles leg. (MACN).

Distribution ( Fig. 15 View FIGURE 15 F). ARGENTINA: Chubut (new record), Río Negro. CHILE: Región de la Araucanía, Región de los Lagos.

Remarks. Malloch (1934) described the species from male and female specimens from several locations from Argentina and Chile. The male specimen studied here has an extra little cross-vein close to cross-vein r-m; postocular setae, inner vertical setae, and outer vertical setae damaged.

Biology. Unknown. The specimen collected by the authors was captured with a Malaise trap.

MACN

Museo Argentino de Ciencias Naturales Bernardino Rivadavia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Lonchaeidae

Genus

Helina

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