Gonatopus lunatus (var. bifasciatus) Klug, 1810

Verheyde, Fons, Jacobs, JEffrEY, Dekoninck, WOUTEr, Achterberg, Kees Van, Rond, JErOEn, Blanck, Tim De, Schoonvaere, KarEL, Nieuwenhuijsen, Hans, Ketelaere, Augustijn De, Minnebo, BarT & Ferrer-Suay, Mar, 2023, Remarks on Hymenoptera on urban green roofs in Belgium, Belgian Journal of Entomology 140, pp. 1-37 : 10-11

publication ID	https://doi.org/ 10.5281/zenodo.10981934
publication LSID	lsid:zoobank.org:pub:EB983FDD-CAE9-48F7-AA63-5F49CC9B6CD1
DOI	https://doi.org/10.5281/zenodo.11047248
persistent identifier	https://treatment.plazi.org/id/03D087F3-FF92-FFB3-FF1F-8C17C62C2C3E
treatment provided by	Felipe
scientific name	Gonatopus lunatus (var. bifasciatus) Klug, 1810
status

Treatment

Gonatopus lunatus (var. bifasciatus) Klug, 1810 - Belg. sp. nov.

( Fig. 4 View Fig )

BELGIUM: • 1 ♀; N51.225° E4.380°; v/2020; J. Jacobs leg. GoogleMaps ; coll. JDR ( FV / RBINS); pitfall trap; J. de Rond det. • 1 ♀; N51.218° E4.398°; ix/2020; J. Jacobs leg. GoogleMaps ; coll. JDR ( FV / RBINS); pitfall trap; J. de Rond det. • 2 ♀♀; N51.251° E4.418°; vi/2021; J. Jacobs leg. GoogleMaps ; coll. JDR ( FV / RBINS); pitfall trap; J. de Rond det. [3 occ. (2 years), 3 roofs]

Remarks:

Although there is additional data on the citizen science portal waarnemingen.be and atlas. hymenoptera.net, this species has not yet been published officially and is missing (for Belgium) in PAULY & OLMI 1988. Females can be recognized by the typical “pincers” or chela on the fore tarsi and relatively thin flagellomeres. Next to that the mesoscutum is elongated medially and marked yellow ( PERKINS, 1976; OLMI, 1994 & DE ROND, 2004).

Females of this variety differ from the typical variety in having at least one tergite with yellow spot or band, and the lower side of the head extensively colored red. The typical variety tends to have all tergites and the lower part of the head fully blacK. Most varieties with extensively colored head treated by KIEFFER (1914) were collected either in Italy, France or Hungary. In literature only a single female resembling var. bifasciatus appears to have been collected in Northwest Europe. This specimen, from Swanage, Purbeck Isle (Dorset, UK) was published as Gonatopus marshalli Kieffer 1905 . Minor details in the original description differ from Gonatopus bifasciatus , but the same taxon could be involved. The host preference range of variety bifasciatus is unknown. Gonatopus lunatus is mainly found in dry sandy grasslands where it accepts many species of Deltocephalinae ( Cicadellidae ) planthoppers as host. The exclusive occurrence of remarkably light colored females on green roofs therefore may indicate a separate taxonomic position.