Penthetria lugens ( Oustalet, 1870 )

Skartveit, John & Nel, André, 2017, Revision of fossil Bibionidae (Insecta: Diptera) from French Oligocene deposits, Zootaxa 4225 (1), pp. 1-83 : 31-32

publication ID

https://doi.org/ 10.5281/zenodo.259087

publication LSID

lsid:zoobank.org:pub:4676EE59-569B-4197-B108-9B32FD88E68E

DOI

https://doi.org/10.5281/zenodo.6039609

persistent identifier

https://treatment.plazi.org/id/03A9879C-FFE0-F423-45D3-374F7F89381B

treatment provided by

Plazi

scientific name

Penthetria lugens ( Oustalet, 1870 )
status

 

Penthetria lugens ( Oustalet, 1870) View in CoL

( Figs. 14 – 15, 95 – 97)

Protomyia lugens Oustalet, 1870: 142 View in CoL – 143.

Plecia cf. lugens ( Oustalet, 1870) ; Théobald, 1937: 227. Penthetria lugens ( Oustalet, 1870) View in CoL ; Handlirsch, 1908: 959.

Material examined. Holotype (female) MNHN R 0 6666.

Additional material: 2 females (MNHN B 24412, B 24518). 5 females (NHB F2208, F2230, F2323, F2410, F2413). 1 female (FSL 391923).

Localities. Corent, Céreste, Kleinkembs

The holotype specimen (fig. 12) is in very poor condition, wing venation and most details are impossible to see. Collomb et al. (2008) classified the type as Insecta, incerta sedis, though it is recognizable as a Plecia or Penthetria female. However, the diagnostic appendages on gonapophysis VIII are visible, confirming that the holotype is conspecific with Penthetria lugens sensu Théobald, 1937 .

Diagnosis. A medium-sized, slender Penthetria . Body brownish, wings brown fumose. R2+3 slightly sinuous and oblique. On ventral side of abdomen gonapophysis VIII has a pair of digitiform appendages.

Redescription. Male unknown

Female (fig. 13) Total length 8.3 – 11.5 mm (N=4).

Head (fig. 96): Length 0.93 – 1.11 mm (N=3), width 1.01 – 1.27 mm (N=3). Dark brown, probably black in life. Antennal flagellum probably 5- or 6-segmented.

Thorax: Length 2.0 – 2.6 mm (N=4), width 2.0 mm (N=2). Dark brown, probably black in life. Haltere yellowish-brown.

Wing (fig. 95): Length 8.6 – 9.4 mm (N=4), width 2.9 – 3.3 mm (N=4), length/width = 2.87 – 3.34 (N=4). Brown fumose, R-veins brown, posterior veins concolourous with membrane. Costa extends nearly to apex of M1. Humeral vein present, Subcosta fine and short, terminating well before crossvein R-M. Pterostigma indistinctive. R2+3 with a bend in basal third, otherwise nearly straight, oblique. R4+5 apically nearly straight. Posterior veins not possible to see in specimens at hand. Wing vein measurements in Table 1 View TABLE 1 .

Legs: Brown, slender. Fore femur 2.0 mm (N=1), fore tibia 2.2 mm (N=1), hind femur 2.6 mm (N=1), hind tibia 2.7 mm (N=1).

Abdomen: Length 6.1 – 7.6 mm (N=4), width 1.7 – 2.9 mm (N=3). Light brown, relatively long and narrow, spindle-shaped.

Terminalia (fig. 97): Gonapophysis VIII with a digitiform appendage on each side. Cerci two-segmented, relatively long.

Fig. 96 View FIGURES 95 – 97 . Female, head and thorax, dorsal. FSL 391923. Fig. 97 View FIGURES 95 – 97 . Female, terminalia, ventral. NMB F2413.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Bibionidae

Genus

Penthetria

Loc

Penthetria lugens ( Oustalet, 1870 )

Skartveit, John & Nel, André 2017
2017
Loc

Plecia cf. lugens (

Theobald 1937: 227
Handlirsch 1908: 959
1937
Loc

Protomyia lugens

Oustalet 1870: 142
1870
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF