Bibio gracilis Unger, 1842: 426
Protomyia gracilis Heer, 1856
Revision of fossil Bibionidae (Insecta: Diptera) from the Miocene of Radoboj, Croatia
Skartveit, John
Krizmanić, Katarina
Zootaxa
2020
2020-04-03
4759
3
351
378
9HM5K
(Unger, 1842)
Skartveit & Krizmanić
2020
Unger
1842
[151,551,585,612]
Insecta
Bibionidae
Penthetria
Animalia
Diptera
4
355
Arthropoda
species
gracilis
comb. nov.
( Figs. 3, 22–23)
Bibio gracilis Unger, 1842: 426. (nec Protomyia gracilis Heer, 1856)
Type material: Holotype(male, SLJG 77464). Heer (1849: 217)mentioned one specimen from Graz and one from Vienna. There is a male specimen in NHMWlabeled « Bibio ungeriHeer» which is clearly not conspecific with the holotypeof Bibio ungeri, this could possibly be the second specimen. Male: Total length 11.2 mm Head: Length 1.21 mm, width 1.32 mm. Black, very poorly preserved. Thorax: Length 3.2 mm, width 2.4 mm. Black. Halter yellowish-brown. FIGURE 3. Penthetria gracilis, male, holotype, SLJG 77464. Wing ( Fig. 22): Length 7.4 mm, width 3.3 mm. Dark brown fumose, veins strong throughout, dark brown, pterostigma indistinctive. Costa quite straight, subcosta indistinctive. Costa extends a little over half-way between apices of R 4+5and M 1. R 2+3straight and oblique. M-veins and CuA 1apically straight. CuA 2apically curved. Vein measurements: basal R 2.4 mm, distal R 1 3.2 mm, basal R s 1.2mm, distal R s 1.3mm, R 2+3 1.4 mm, R 4+5 2.9 mm, R-M 0.4 mm, basal M 2.8 mm, distal M 0.6 mm, M 1 3.5 mm, M 2 2.8 mm, M-Cu 0.3 mm, CuA 2.0 mm, CuA 1 3.8 mm, CuA 2 2.5 mm. Legs: Black, poorly preserved. Length of fore femur 2.3 mm, hind femur 3.3 mm. Abdomen: Length 7.3 mm, width 1.7 mm. Black, rather slender. Pile not apparent. Terminalia ( Fig. 23): Hypopygium width 1.2 mm. Gonostylus digitiform, slender and curved. Epandrium moderately bilobate with wide, shallow indentation between rounded lobes. Femaleunknown. The species is not to be confused with Protomyia gracilis Heer, 1856(placed as a synonym of Plecia bucklandiby Skartveit & Nel 2017), which was listed as Penthetria gracilisby Handlirsch (1907)and Evenhuis (1994).
2595809713
NHMW
4
355
SLJG 77464
2
holotype