Plecia lygaeoides ( Heer, 1849 ), 1868

Skartveit, John & Krizmanić, Katarina, 2020, Revision of fossil Bibionidae (Insecta: Diptera) from the Miocene of Radoboj, Croatia, Zootaxa 4759 (3), pp. 351-378 : 359-361

publication ID

https://doi.org/10.11646/zootaxa.4759.3.3

publication LSID

lsid:zoobank.org:pub:FBD53C14-07AA-4E01-9739-214680A1DE4C

DOI

http://doi.org/10.5281/zenodo.3810465

persistent identifier

http://treatment.plazi.org/id/C6550F6A-9514-FF84-23B1-F8EBFA8EE162

treatment provided by

Plazi

scientific name

Plecia lygaeoides ( Heer, 1849 )
status

 

Plecia lygaeoides ( Heer, 1849)  

( Figs. 7 View FIGURE 7 , 27 View FIGURES 26–28. 26 )

Bibio lignarius Germar, 1837 sensu Unger, 1841: 427   (nec Germar), pro parte

Protomyia lygaeoides Heer, 1849: 232   .

Plecia lygaeoides (Heer) Loew, 1868: 185   .

Penthetria lygaeoides (Heer) Evenhuis, 1994: 129   .

Protomyia latipennis Heer, 1849: 237   (syn.n.)

Plecia latipennis (Heer) Loew, 1868: 184   .

Penthetria latipennis (Heer) Handlirsch, 1907: 960   .

Type material: Holotype (female) SLJG 77465. Type and depicted specimen, P. latipennis   (female), SLJG (no number). The latter specimen is also labeled as Rhipidia extincta Unger   , but this must be a mistake since the specimen does not at all fit the original description of Rhipidia extincta   .

Additional material: Female ( CNHM 1833).

The type specimen was redescribed by Skartveit & Nel (2017: 51).

The species is habitually similar to Penthetria cimicoides   , but easily distinguished from this species by the short vein R 2+3.

Female: Total length 10.1–10.2 mm (N=2)

Head: Length 1.2 mm (N=1), width 1.1 mm (N=2). Width Black, poorly preserved.

Thorax: Length 2.4–2.6 mm (N=3), width 2.1–2.4 mm (N=2). Black.

Wing ( Fig. 27 View FIGURES 26–28. 26 ): Length 9.3–10.3 mm, width 3.4–3.8 mm, length/width = 2.7–2.9 (N=3). Dark brown fumose, relatively wide. Costa distinctively curved, costal cell wide. Subcosta relatively weak. R 2+3 oblique, with a slight bend in the middle. Pterostigma oval, not very distinctive. Costa extends a little beyond apex of R 4+5. Wing vein measurements: basal R 2.7–3.0 mm (N=3), distal R 1 3.1–3.8 mm (N=3), basal R s 1.7 –1.8 mm (N=3), distal R s 1.5 –1.8 mm (N=3), R 2+3 1.0– 1.2 mm (N=3), R 4+5 2.7–3,0 mm (N=3), R–M 0.5 mm (N=2), basal M 3.0 mm (N=1), distal M 0.9–1.1 mm (N=2), M 1 3.7 mm (N=1), M 2 3.2 mm (N=2), CuA 2.2–2.5 mm (N=2), CuA 1 4.5 mm (N=1), CuA 2 3.2 mm (N=1).

Legs: Black, slender. Fore tibia length 2.4 mm (N=1). Hind femur length 2.8 mm (N=1), slightly thickened, hind tibia 2.8–3.2 mm (N=3), tibia and tarsus quite slender.

Abdomen: Length 6.8–6.9 mm (N=2). Black, oval, poorly preserved in P. latipennis   type, covered by wings in P. lygaeoides   type.

The species has been recorded from both Radoboj and French Oligocene sites ( Skartveit & Nel, 2017). Given that these sites are now thought to be more than 10 MYr older than Radoboj, it seems questionable if the two species are the same. Should they be found to be different, the Radoboj species will keep the name Plecia lygaeoides   whereas the French Oligocene species should be called Plecia gracilenta (Heyden & Heyden, 1865)   .

SLJG

Steiermarkisches Landesmuseum Joanneum

CNHM

Cincinnati Museum of Natural History

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Bibionidae

Genus

Plecia

Loc

Plecia lygaeoides ( Heer, 1849 )

Skartveit, John & Krizmanić, Katarina 2020
2020
Loc

Penthetria lygaeoides (Heer)

Evenhuis, N. L. 1994: 129
1994
Loc

Penthetria latipennis (Heer)

Handlirsch, A. 1907: 960
1907
Loc

Plecia lygaeoides (Heer)

Loew, H. 1868: 185
1868
Loc

Plecia latipennis (Heer)

Loew, H. 1868: 184
1868
Loc

Protomyia lygaeoides

Heer, O. 1849: 232
1849
Loc

Protomyia latipennis

Heer, O. 1849: 237
1849