Myopella appendiculata ( Stein, 1904 )

Michelsen, Verner, 2023, A reassessment of the Andean genus Myopella Malloch (Diptera: Anthomyiidae), Zootaxa 5336 (3), pp. 413-423 : 421

Myopella appendiculata ( Stein, 1904)

( Figs 1C , 2A , 4A–E , 5A, B , 6A, B , 7 )

Myopina appendiculata Stein ; Stein 1904: 473 ( Peru); Stein 1911: 145 ( Bolivia, Peru).

Myopella appendiculata (Stein) ; Malloch 1934: 197–198, figs 29–30 ( Argentina); Pont 1974: 7.

Material examined. [ NHMD]: ARGENTINA: Tierra del Fuego: Estancia Viamonte, Auricosta , 2m, 1♁ 23.i.1979, 1♁, 1♀ 31.i.1979 (Mision Cientifica Danesa). Mendoza: NW of Mendoza, Puente del Inca , 2750m, 1♁, 1♀ 29.iii.1979 (Mision Cientifica Danesa) . PERU. Junin: 10km NE Oroya, Huacapo, 4030m, 1♀ 1.ii.1987 (O. Karsholt). Cerro de Pasco: 22km NW Cerro de Pasco, Upper Huallaga Valley, Pariama , c. 3800m 1♀ 6–8.ii.1987 (O. Karsholt) .

Diagnosis. Head and body dark greyish brown, in places with a rose hue, on abdomen with a bronzy subshine; wing and calypteres ochre brown to ochre yellow; halter brown or ochre. Acrostichals setulose apart from stronger pair in front of suture and prescutellar pair; posterior intraalar setulose or absent; meron bare. Male. Head dichoptic as in the female, frons occupying more than one-third of head width; fronto-orbital plates each with 3 orbital setae and 2 frontal setae. Sternite V with long posterior lobes distally hooked; upper epandrium rounded, not heeled; surstyli thicker in basal than distal half. Female. Frontal setae 2–3 pairs. Spermathecal ducts very long and slender.

Distribution. Argentina, Bolivia, Peru ( Fig. 7 , blue dots).

Figures

FIGURE 1. Myopella angustifrons Malloch (A, B), M. appendiculata (Stein) (C), males. Habitus (A); head, dorso-lateral view (B, C). Same scale for B and C.

FIGURE 2. Myopella appendiculata (Stein) (A), M. angustifrons Malloch (B), males. Sternites II–V (A); sternites I–V (B). Same scale for A and B.

FIGURE 4. Myopella appendiculata (Stein), male terminalia. Hypopygium, lateral (A), and caudal (B); pre- and postgonite (C); phallus (D); sternite V (E). Same scale. Setae omitted on epandrium in A and B.

FIGURE 5. Myopella appendiculata (Stein), female abdomen. Tergites I–V (A); sternites I–V (B). Same scale.

FIGURE 6. Myopella appendiculata (Stein) (A, B), M. angustifrons (Malloch) (C, D), females. Ovipositor, flat mounted (A, C); spermathecae (B, D). Same scale for A, B and D.

FIGURE7. KnownrecordsofMyopella angustifronsMalloch (blackdots) andM.appendiculata(Stein) (bluedots)superimposed on a map of South America.