First occurrence and description of Aceria fraxiniflora (Felt, 1906) Acariformes: Eriophyoidea) from Europe

Abstract

Aceria fraxiniflora (Felt, 1906) is reported from Europe for the first time. This mite has never been described before and we therefore describe and illustrate the female and the nymph. The species was collected from the galled inflorescences and fruits of the introduced species Fraxinus pennsylvanica Marshall (Oleaceae) in Hungary, and from Fraxinus americana L. in Indiana, USA.

Ash Dieback and Other Pests and Pathogens of Fraxinus on the Island of Ireland

“…It was first recorded being present in the Republic of Ireland in 1999(O'Connor et al 1999 and it was observed for the first time in Northern Ireland in 2015 (O' Connor and O'Connor 2016). This European species can be mistaken for a related species called A. fraxiniflora (Felt, 1906), which shares morphological similarities and induces similar symptoms on ash trees (GBIF 2022;Solomon et al 1993;Korda et al 2019). The latter species is only found in the USA and the south of Canada, with the exception of a new sighting in Hungary on symptomatic imported F. pennsylvanica (Korda et al 2019).…”

“…This European species can be mistaken for a related species called A. fraxiniflora (Felt, 1906), which shares morphological similarities and induces similar symptoms on ash trees (GBIF 2022;Solomon et al 1993;Korda et al 2019). The latter species is only found in the USA and the south of Canada, with the exception of a new sighting in Hungary on symptomatic imported F. pennsylvanica (Korda et al 2019). These two mites species feed on plant cells, inducing the enlargement of the surrounding cells and formation of a gall (NatureSpot 2022).…”

“…In particular, these insects attack the ash tree fruiting keys, causing inflorescence and fruit deformation in the shape of globular sponge-like galls. The panicles become swollen and distorted, and the samaras pubescent and lumpy (Figure 17X.a-d) (GBIF 2022; Korda et al 2019).…”

Myco- and microorganisms in the tuberculosis pathology of the common ash in Ukraine and interaction between them

“…Mico-and microorganisms are an integral part of the forest biocenosis, which determines its depth, which is directly involved in all stages of growth and development of woody plants and the utilization of mortmass and detritus. Among the systematic and functional groups of myco-and microbiota, a special place is occupied by phytopathogenic endophytes of various trophic specializations, capable of causing significant ecological, economic and social damage under certain conditions, which is confirmed by deep pathology 2013), bacteria (Cherpakov, 2012;Goychuk et al, 2019), nematodes (John, 1967;Ryss & Polyanina, 2018), mycoplasmas (Bricker & Stutz, 2004), representatives of harmful entomofauna (Korda et al, 2019), as well as the influence of climatic and soil-hydrological indicators (Goberville et al, 2016), however, no consensus has been reached yet.…”

First Occurrence and Re-description of Aculus epiphyllus (Nalepa) (Acariformes: Eriophyoidea) from Fraxinus pennsylvanica in Europe

“…Prior to this paper, no eriophyoid species have been recorded from the foliage of green ash (Amrine and Stasny, 1994;Davis et al, 1982). In Hungary, Korda et al (2019) have recently described Aceria fraxiniflora from the globular sponge-like galls on the inflorescences and fruits of F. pennsylvanica. Because the description of Aculus epiphyllus given by Nalepa (1894) is incomplete we re-described the female and male and described the nymph, and provide morphometric data for the differences between our examined specimens and the data available from literature.…”