Plecia lugubris Heer, 1849

Skartveit, John & Krizmanić, Katarina, 2020, Revision of fossil Bibionidae (Insecta: Diptera) from the Miocene of Radoboj, Croatia, Zootaxa 4759 (3), pp. 351-378 : 358-359

Plecia lugubris Heer, 1849

( Figs. 6 , 26 )

Plecia lugubris Heer, 1849: 209 .

Penthetria lugubris (Heer) Handlirsch, 1907: 960 .

Material: Possible type (female, NHMW) in Wien, fits one of the illustrations in Heer except it is reversed, maybe the counterpart of the specimen described by Heer.

Additional material: four females ( CNHM 1824, 1825, 1828, 1831)

Female: Total length 7.9–10.3 mm (N=4).

Head: Length 0.84 mm (N=1), width 0.86–1.00 mm (N=2).

Thorax: Length 2.4–3.1 mm (N=3), width 1.9–2.4 mm (N=2). Brown, poorly preserved. Halter brown.

Wing: Length 8.4–9.7 mm (N=4), width 3.1–3.6 mm (N=3). Brownish fumose (colour preservation questionable), rather narrow. Veins fine and distinctive, pterostigma not apparent. Subcosta distinctive, long and straight. R 2+3 straight and oblique. Costa extends to apex of R 4+5. CuA and its continuation CuA 2 very strong and prominent, CuA 2 apically curved. CuP straight, basally strong and prominent. Vein measurements: basal R 2.1–2.7 mm (N=3), distal R 1 2.7–3.5 mm (N=2), basal R s 1.5 –2.2 mm (N=3), distal R s 1.9 –2.0 mm (N=2), R 2+3 0.8–1.3 mm (N=2), R 4+5 2.9–3.1 mm (N=2), R-M 0.41–0.44 mm (N=3), basal M 2.9–4.2 mm (N=3), distal M 0.5–0.7 mm (N=3), M 1 3.2–4.2 mm (N=2), M 2 2.5–3.2 mm (N=2), CuA 1.9–2.3 mm (N=2),CuA 1 3.5–3.7 mm (N=2), CuA 2 2.6–2.7 mm (N=2).

Legs: Brown, slender.

Abdomen: Length 5.4–7.1 mm (N=3), width 1.9–2.3 mm (N=2). Brown, cylindrical, relatively slender.

Figures

FIGURE 6. Plecia?lugubris, female, possible type, NHMW, no catalog number.

FIGURES 26–28. 26. Plecia lugubris, possible type, female, wing (somewhat shortened), NHMW, no catalog number. 27. Plecia lygaeoides, female, holotype, wing, SLJG 77465. 28. Bibio enterodelus, female, holotype, wing, SLJG 77425. Scale bar = 1 mm.