Planetella fasciata PLA
Creators: name: Ševčík, Jan
name: Hippa, Heikki
name: Burdíková, Nikola
name: Sopuch, Kryštof
name: Skuhravá, Marcela
name: Bruun, Hans Henrik
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Cecidomyiidae
Planetella
Planetella fasciata

description: Planetella fasciata (Meigen, 1818) sp. restit.   
 Cecidomyia fasciata Meigen, 1818: 94. Type locality: Germany.   
 Type material. HOLOTYPE: ♀, pinned, not studied, but photos available at the web page of MNHN Paris: https://science.mnhn.fr/taxon/species/ planetella/fasciata.   
 Additional material examined (all in coll. JSL-UOC). CZECH REPUBLIC: BOHEMIA: Doksy, 31.v.–18.vi.2020, 1♀ (specimen after DNA extraction, No. PLA 33), Malaise trap in Carex spp., M.Tkoč leg., Doksy, 15.v.–6.vi.2022, Malaise trap in Carex spp., 1 ♀ (specimen after DNA extraction, No. PLA 33b),M.Tkoč leg.; Jílové, Pod lesem Nature Reserve, 29.vii.–2.ix.2022, Malaise trap, 1♀ (specimen after DNA extraction, No. PLA 79), L. Blažej & J. Hejduk leg., Jílové, Pod lesem Nature Reserve, 2.ix.–4.xi.2022, Malaise trap, 1 J (specimen after DNA extraction, No. PLA 81), L. Blažej & J. Hejduk leg. SLOVAKIA: Muránska planina National Park, Rosiarka Nature Reserve, 920 m, 26.v.–21.vi.2022, 3 JJ (specimens after DNA extraction, No. PLA 52c,d,e, one of them figured), 1 ♀ (PLA 52b), Malaise trap in Carex rostrata, all J. Roháček & J. Ševčík leg.; Tisovec, Trstie Nature Reserve, 14.vi.–12.vii.2023, 1 J (PLA 70), Malaise trap in Carex rostrata, J. Roháček & J. Ševčík leg.   
 Diagnosis. This species is well characterized by the broad pale anterior bands on the abdominal tergites, in combination with 12 binodose flagellomeres. It is also one of the few species of Planetella with the eyes completely separated in both sexes, without an eye-bridge. The following combination of characters on the male terminalia is also diagnostic (Figs 4C,D): narrow gonostylus, club-shaped and apically rounded hypoproct, almost as long as gonocoxite, aedeagus narrow throughout and slightly shorter than gonocoxite.   
 Comments. This species has been considered as a junior synonym of Planetella grandis (Meigen, 1804). Although the identity of P. grandis has not been clarified yet and its terminalia remain unknown, the only male syntype of P. grandis clearly has a dark unbanded abdomen (the first three abdominal segments are still preserved, see https:// science.mnhn.fr/taxon/species/planetella/grandis), without distinct pale transverse bands, and thus definitely represents a different species than the other three syntypes. The male syntype currently lacks the head, but EDWARDs (1938) mentioned that the male type of P. fasciata has well separated eyes and 15 flagellomeres (14 + a small apical segment), although the figure of the dark specimen in MORGE (1976) shows just 12 binodose flagellomeres. EDWARDs (1938) possibly refers in this case to British males, which he considered as conspecific.   
 In any case, P. fasciata is herewith reinstated as a valid species and its male terminalia and flagellomeres are figured for the first time (Figs 4C,D, 14C). We use the right of the first revising author to interpret this species in this way, although it may well be shown in the future that several closely related species with the eyes separated, 12 flagellomeres and banded abdomen exist.   
 The species figured by KIEFFER (1913) as P. cornifex (Kieffer, 1898) may represent a junior synonym of P. fasciata, see below (under P. cornifex).
description: Published as part of Ševčík, Jan, Hippa, Heikki, Burdíková, Nikola, Sopuch, Kryštof, Skuhravá, Marcela & Bruun, Hans Henrik, 2023, Integrative taxonomy of Central European Planetella (Diptera: Cecidomyiidae) indicates high species diversity, intraspecific variation and low host specificity, pp. 413-450 in Acta Entomologica Musei Nationalis Pragae 63 (2) on pages 419-420, DOI: 10.37520/aemnp.2023.026, http://zenodo.org/record/10621390