Coenosia albisquama ( Emden, 1940: 233 ),

Couri, Márcia & Pont, Adrian, 2016, Species of Coenosia Meigen (Diptera, Muscidae) described by Fritz van Emden from the British Museum Ruwenzori Expedition of 1934 – 1935, Zootaxa 4144 (4), pp. 529-555: 531-532

publication ID

http://doi.org/10.11646/zootaxa.4144.4.5

publication LSID

lsid:zoobank.org:pub:DE8B262C-1465-4998-88AD-392880B06912

persistent identifier

http://treatment.plazi.org/id/03DB87F3-FFEB-FFE6-FF39-E1C20EEAFB6E

treatment provided by

Plazi

scientific name

Coenosia albisquama ( Emden, 1940: 233 )
status

stat. nov.

Coenosia albisquama ( Emden, 1940: 233)  , stat. nov.

( Figs 47–49View FIGURES 41 – 52)

Holotype male seen; in good condition.

Diagnosis. General colour brown; posterior part of scutum and scutellum brown; head strikingly silvery in male, frons and fronto-orbital plate strongly silver pollinose and strongly dilated to vertex, face and parafacial also strongly silver; wing infuscated; no ocellar setae in males; postpedicel dark brown; calypters whitish; arista shorthaired basad and bare apicad; palpus brown; haltere with knob dark brown; presutural and postsutural acrostichals present, long and fine; scutellum with four strong setae and with only one pair of subbasal setulae; anterior katepisternal short; lower calypter about 1.8 times the length of the upper one; legs shining brown; hind tibia with an anterior and an anterodorsal seta, the latter a little shorter; submedian posterodorsal seta absent; sternite 5 as in Fig. 47View FIGURES 41 – 52.

Male terminalia. Cercal plate and surstylus as in Fig. 48View FIGURES 41 – 52. Aedeagal complex as in Fig. 49View FIGURES 41 – 52.

Notes. Included in the niveifrons  group. Described by Emden (1940) as a subspecies of C. niveifrons Stein, 1913  . In addition to colour differences in the scutum and calypter and the long and fine acrostichals present in C. albisquama  , the morphology of the male terminalia also showed differences in the shape and chaetotaxy of sternite 5, cercal plate, surstylus and aedeagus both from C. n. niveifrons  ( Figs 101–103View FIGURES 101 – 112) and from C. niveifrons argentescens  , also described by Emden as a subspecies and also elevated here to species rank. One paratype male was dissected and illustrated.

Coenosia argentescens ( Emden, 1940: 234)  , stat. nov. ( Figs 25–28View FIGURES 21 – 40; 50–52)

Holotype male seen ( Figs 25–28View FIGURES 21 – 40); in good condition.

Diagnosis. General colour brown; scutum, scutellum and abdomen entirely silver pollinose; head strongly silvery in male, frons and fronto-orbital plate strongly silver pollinose and strongly dilated towards vertex in male, face and parafacial also strongly silver; wing infuscated; no ocellar setae in males; postpedicel dark brown; calypters whitish; arista short-haired basad and bare apicad; palpus brown; haltere with knob dark brown; presutural acrostichals absent; postsutural acrostichals very short and sparse; scutellum with four strong setae and with only one pair of subbasal setulae; anterior katepisternal short; lower calypter about 1.8 times the length of the upper one; legs shining brown; hind tibia with an anterior and an anterodorsal seta, the latter a little shorter; posterodorsal submedian seta absent. Sternite 5 as in Fig. 50View FIGURES 41 – 52.

Male terminalia. Cercal plate and surstylus as in Fig. 51View FIGURES 41 – 52. Aedeagal complex as in Fig. 52View FIGURES 41 – 52.

Notes. Included in the niveifrons  group. Described by Emden (1940) as a subspecies of C. niveifrons Stein, 1913  . The comments above under C. albisquama  also apply here. In addition to the colour differences of scutum and calypter and the absence of presutural acrostichals, the morphology of the male terminalia also showed differences in the shape and chaetotaxy of sternite 5, cercal plate, surstylus and aedeagus both from C. n. niveifrons  ( Figs 101–103View FIGURES 101 – 112) and from C. niveifrons albisquama  , also described as a subspecies and also elevated here to species rank. One paratype male was dissected and illustrated.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Muscidae

Genus

Coenosia

Loc

Coenosia albisquama ( Emden, 1940: 233 )

Couri, Márcia & Pont, Adrian 2016
2016
Loc

Coenosia albisquama (

Emden 1940: 233
1940
Loc

Coenosia argentescens (

Emden 1940: 234
1940