Recent observations of less known gall midges in Dronten, Zwolle and Loenen,the Netherlands (Diptera: Cecidomyiidae)
Rarely recorded gall midges from three locations in central and eastern provinces of the Netherlands – Dronten (province of Flevoland), Loenen (province of Gelderland) and Zwolle(province of Overijssel) – are discussed. A checklist of Roskam & Carbonnelle (2015) with recorded gall midges in the Netherlands, was used as a reference for details about the abundance of each species. The southern European species Spurgia esulae, not mentionedin the checklist, was found in Zwolle. New to the investigated region are Contarinia fagi, Dasineura medicaginis, Jaapiella medicaginis, Macrolabis heraclei and Ozirhincus millefolii. Other species which are discussed are: Anthodiplosis rudimentalis (with a first observation in the Netherlands in 2008), Contarinia jacobaeae (with galls possibly containing the inquiline gall midge Jaapiella crinita), Contarinia medicaginis (found on Medicago falcata, a host plant not mentioned in the checklist), Contarinia nasturtii (on Diplotaxis, with a yet unknown gall-type where fruits are clustered at the top of the stems), Contarinia pyrivora (with a small fraction of the larvae hibernating in the fruits and not exclusively in the soil asmentioned in literature), Contarinia rubicola (causing strong enlargement of the sepals, withor without stemlike growth of the central part of the receptacle; fruits partly develop eitheron top or alongside this stem, with some of them showing phyllody), Dasineura pyri (withlarge populations on rootstock shoots of Pyrus calleryana), Gephyraulus raphanistri (withflower galls strongly purple-colored, possibly caused by anthocyanin), Lestodiplosis sp. (a predatory gall midge with only a few records in the checklist of 2015 was observed in galls of Rhopalomyia florum), Mikomya coryli (with only three records in the checklist), Ozirhincushungaricus and O. longicollis (both occuring at all three locations in the studied region, thefirst species being dominant), Rhopalomyia florum (the gall is not a swelling of the achene, but is formed laterally to the aborted achene; it was abundant at two of the three locations),Semudobia betulae, S. skuhravae and S. tarda (for which Betula fruits sometimes containedtwo galls of either the same or different species), Taxomyia taxi (for which both the verysmall 1-year and the much larger 2-year life cycle galls were found, the 1-year gall is notmentioned in the checklist), and Zygobia carpini (of which a gall is apparently to be used foroverwintering by a larva of Spilonota ocellana).
(PDF) Recente waarnemingen betreffende minder bekende galmuggen in Dronten, Zwolle en Loenen. Available from: https://www.researchgate.net/publication/366290438_Recente_waarnemingen_betreffende_minder_bekende_galmuggen_in_Dronten_Zwolle_en_Loenen [accessed Dec 15 2022].