Stenopygium nubeculum Becker, 1922: 75
Brooks 2005: 109
Yang et al . 2006: 202
New records of Stenopygium Becker (Diptera: Dolichopodidae) from the Neotropical Region, and a key to species
Soares, Matheus M. M.
Ale-Rocha, Rosaly
Zootaxa
2020
2020-10-23
4868
1
129
134
524P8
Becker, 1922
Becker
1922
[151,620,1736,1763]
Insecta
Dolichopodidae
Stenopygium
Animalia
Diptera
0
129
Arthropoda
species
nubeculum
( Figs 1–8, 17)
Stenopygium nubeculum Becker, 1922: 75; Robinson 1970: 40.52 (catalog); Brooks 2005: 109(review); Yang et al. 2006: 202(catalog).
Examined material. Bolivia, Cochabamba, 105 kmE Cochabambaat Rio Carmen Mayo, 17°8ʹ47ʺS 65°43ʹ55ʺW, 1800 m, FIT, 8–12.ii.1999, F. Génier, 99-058 ( 3♀, CNC); idem, low cloud forest, 1–6.ii.1999, 99-025 ( 1♀, CNC); idem, 17°8ʹ51.24ʺS 65°43ʹ50.40ʺW, 1750 m, FIT, 1–6.ii.1999, R. S. Hanley( 3♂, 1♀, CNC); Santa Cruz, 32.8 kmNW Comarapa, Kara Huasi, Yungas de la Siberia, 17°49ʹ20ʺS 64°42ʹ31ʺW, 2400 m, Yungas, FIT, 28–30.i.1999, F. Génier, 99-107 ( 1♀, CNC). Ecuador, Loja, Zamora[ 4°01′04.0″S 79°11′30.2″W], 1800 m, 26.xi.1970, L.E. Peñacol. ( 7♂, 6♀, MZUSP); idem, 1200 m, 25.xi.1970( 6♂, 4♀, MZUSP; 6♂, 6♀, INPA; 4♂, 2♀, NMNH); idem, 1900 m( 3♂, MZUSP); Papallacta (Quito Baeza)[ 0°22′41.0″S 78°08′37.2″W], 2600 m, 12.i.1971( 4♂, MZUSP); idem, 3000 m, 12–14.i.1971( 1♂, MZUSP); Napo, Baeza[ 0°27′59.2″S 77°53′27.4″W], 1900 m, 9.ii.1983, Masner& Sharkey( 2♂, CNC); idem, ii.1983( 2♂, CNC); Tandapi[ 0°24′48.1″S 78°47′51.3″W] 40 kmSW Quito, 1300–1500 m, 15–21.vi.1965, Pena( 38♂, 28♀, CNC).
Distribution. Bolivia, Peru( Yang et al. 2006) and Ecuador* ( Fig. 17).
Remarks.Specimens of Stenopygium nubeculumare relatively rare in collections. Before the present study, only the typeseries of the species was known, from Mapiri, Bolivia[ 15°18′22.4″S 68°13′24.8″W] (at elevations above 2,000 m) and Callanga, Peru[ 12°27′52.8″S 71°58′19.5″W] ( 1,200 m). Additionally, all 128 specimenslisted here were collected above 1,000 meters, which may indicate habitat preference for higher altitudes in this species. The female terminalia of S. nubeculum, illustrated here for the first time ( Figs 7–8), is very similar to that of S. punctipennis, differing only in the number of spines of the acanthophorite (six in S. nubeculum, five in S. punctipennis), and this corroborates the small clade in Dolichopodinaeformed by CheiromyiaDyte, StenopygiumBecker, PelastoneurusLoew, PlatyopsisParentand the Nearctic and Neotropical species of ParacliusLoew. Thisclade is supported by the fusion in the anterior portion of tergite 8 to sternite 8 infemales ( Fig. 8) ( Brooks 2005; Capellari & Amorim 2009). FIGURES 1–6. Stenopygium nubeculum Becker, 1922. 1.Head, anterior view (♂); 2–3.Head, lateral view: 2.Male; 3.Female; 4.Wing (♂); 5.Mesonotum, dorsal view (♂); 6.Hypopygium, lateral view. Abbreviations: C—costal vein; dc s—dorsocentral seta; dm-m—discal medial crossvein; M 1—first branch of media; M 4—fourth branch of media; R 4+5—third branch of radius. As pointed out by Brooks (2005), the relationships between Stenopygium, Pelastoneurusand Platyopsisremain uncertain and inconclusive. We found species of Pelastoneurusthat share diagnostic characters with Stenopygium, such as a bulging clypeus of length equal to that of the face, also present in an unidentified species ( Fig. 15) collected in the same locations in Ecuadorfrom which S. nubeculumspecimens were collected. This feature is also shared with several other New World species of Pelastoneurus( Brooks 2005). The long, thin cercus of S. nubeculumis also shared with an unidentified species of Pelastoneurusfrom Brazil( Fig. 16). However, all species of Pelastoneurusmentioned here have the dorsal and ventral microtrichia of the arista-like stylus longer than lateral microtrichia ( Fig. 15), five pairs of dorsocentral setae and absence of wrinkles in the phallus. Future studies of the Andean fauna of Dolichopodinaemay help to resolve the relationships between these genera, which are still poorly characterized.
3017381326
[393,1432,1870,1896]
Bolivia
-17.146389
Rio Carmen Mayo
21
-65.73194
0
129
1
Cochabamba
3017381320
[151,825,1908,1932]
1999-02-08
1999-02-12
1999-02-08
CNC
F. Genier
1800
0
129
3
3
3017381323
[839,1430,1908,1932]
1999-02-01
1999-02-06
1999-02-01
CNC
F. Genier
1800
0
129
1
1
3017381313
1999-02-01
1999-02-06
1999-02-01
R, CNC
S. Hanley
1750
-17.147566
Santa Cruz
1
-65.73067
0
129
4
1
3
Santa Cruz
3017381329
[282,1432,2014,2040]
1970-11-26
MZUSP
L. E. Pena
Ecuador
1800
-4.017778
Zamora
1
-79.19173
0
129
13
6
7
Loja
3017381331
[151,994,151,176]
1970-11-25
MZUSP, INPA, NMNH
1200
1
130
28
12
16
3017381314
[1005,1315,151,176]
1970-11-25
MZUSP
1900
1
130
3
3
3017381305
1971-01-12
MZUSP
2600
-0.37805557
1
-78.14366
1
130
4
4
3017381318
[979,1432,187,212]
1971-01-12
1971-01-14
1971-01-12
MZUSP
3000
-0.37805557
1
-78.14366
1
130
1
1
3017381302
[151,1151,222,248]
1983-02-09
CNC
Masner & Sharkey
1900
-0.46644443
Baeza
1
-77.890945
1
130
2
2
Napo
3017381306
[1162,1432,223,248]
1983-02
CNC
Masner & Sharkey
1900
-0.46644443
Baeza
1
-77.890945
1
130
2
2
Napo
3017381311
[151,1334,258,284]
1965-06-15
1965-06-21
1965-06-15
CNC
Pena
1400
-0.4133611
Tandapi
1
-78.797585
1
130
66
28
38
Napo