Bibio firmus 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 : 364

Bibio firmus Heer, 1849

( Figs. 11 , 31 )

Bibio firmus Heer, 1849: 226 .

Type material: Holotype (female) SLJG 77471 .

Description:

Male unknown.

Female: Total length 10.6 mm. The specimen is entirely grayish brown, details difficult to make out as it is a very vague impression.

Head: Length 1.4 mm. Antenna quite thin, flagellum possibly 7-segmented.

Thorax: Length 3.0 mm, width 2.5 mm. No details possible to see in type specimen.

Wing ( Fig. 31 ): Length 7.6 mm, width 2.4 mm, length/width = 3.1. Crossvein R-M nearly equal to basal R s in length.

Legs: Hind legs quite slender, otherwise no details possible to see in type specimen.

Abdomen: Length 6.3 mm, width 3.5 mm. No details possible to see in type specimen.

Figures

FIGURE 11. Bibio firmus, female, holotype, SLJG 77471.

FIGURES 29–31. 29. Bibio enterodelus, female, holotype of Bibio lividus, head and fore leg. GBA 2009/016/0691. 30. Bibio enterodelus, female, holotype of Bibio lividus, hind leg. GBA 2009/016/0691. 31. Bibio firmus, holotype, female, wing, SLJG 77471. Wing venation is highly tentative. Scale bar = 1 mm.