Revision of fossil Bibionidae (Insecta: Diptera) from French Oligocene deposits Author Skartveit, John Author Nel, André text Zootaxa 2017 4225 1 1 83 journal article 37263 10.5281/zenodo.259087 05be601b-f9f1-4952-ac09-7012ef31aab0 1175-5326 259087 4676EE59-569B-4197-B108-9B32FD88E68E Plecia conica Théobald, 1937 (Figs. 29–30, 114–118) Plecia conica Théobald, 1937 : 232 . Plecia haennii Gentilini, 1993 : 164 . Syn.n. Material. Holotype (male) of Plecia conica NMB F1398/1, paratype (male) of Plecia conica NMB F1398/2. Nontype material (3 males) NMB F2090, (RGL) Dauphin 12, Saint-Maime 23 Plecia conica may quite possibly be the male of Plecia foersteri (next species). Localities. Bois d’Asson, Kleinkembs. FIGURES 110–113. Plecia bucklandi (Heer, 1849) Fig. 110. Female, wing. ETHZ Aix 142. Fig. 111 . Male, wing. NHMUK In 39832. Fig. 112 . Female, head and thorax, lateral. ETHZ Aix 142. Fig. 113 . Female, head and thorax, dorsal. NHMUK In 39832. FIGURES 114–118. Plecia conica Théobald, 1937 . Fig. 114. Male, wing. NMB F2090. Fig. 115 . Male, habitus, lateral. RGL Dauphín 12. Fig. 116 . Male, habitus, dorsal. RGL Saint Maime 23’. Fig. 117 . Male, terminalia, dorsal. RGL Dauphín 12. Fig. 118 . Male, terminalia, lateral. NMB F1398/2. Diagnosis. A small Plecia (total length 5–7 mm ). Antennal flagellum 8-segmented. Male epandrium domeshaped, gonostylus very robust, apically expanded. Redescription. Male (figs. 29–30, 115–116): Total length 5.0 – 7.0 mm (N=4). Head: Length 0.85 – 0.90 mm (N=2), width 0.93 mm (N=1). Antennal flagellum 8-segmented. Ocellar tubercle rather small. Thorax: Length 1.7 – 2.2 mm (N=3), width 1.5 mm (N=1). Black. Haltere yellowish-brown. Wing (fig. 114): Length 4.8 – 5.0 mm (N=3), width 2.0 – 2.1 mm (N=2), length/width = 2.39 – 2.50 (N=2), elliptical. Light brownish fumose, veins fine and light brown. Pterostigma very indistinctive. R2+3 straight and oblique. Apex of R4+5 slightly curved. Legs: Slender, pale brown. Length of fore tibia 1.6 mm (N=1), hind femur 1.9 mm (N=1), hind tibia 2.0 mm (N=1), hind first tarsomere 0.7 mm (N=1). Abdomen: Length 3.3 – 4.6 mm (N=3). Brown, conical. Terminalia (figs. 117–118): Hypopygium width 0.57 – 0.72 mm (N=2). Gonostylus 0.26 – 0.32 mm long (N=2), strong, clavate, thickened apically. Epandrium mesally with a shallow indentation. Female unknown.