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PDF Download STERBEECKIA ISSN 0562-0066 Sterbeeckia is een uitgave van de Koninklijke Vlaamse Mycologische Vereniging v.z.w., genoemd naar de Antwerpse pionier-mycoloog Franciscus van Sterbeeck (1630-1693), met wetenschappelijk-mycologische artikels, in het bijzonder betreffende de Belgische fungi. Leden van de KVMV ontvangen Sterbeeckia en het trimestrieel contactblad Sporen. Het lidgeld bedraagt 21,00 EURO (gezin 23,00 EURO) te storten op rekening IBAN : BE17 7370 1875 7621 (BIC: KREDBEBB, mededeling Lidgeld KVMV) van de Koninklijke Vlaamse Mycologische Vereniging vzw, Universiteit Antwerpen - Bioruimte, Groenenborgerlaan 171, te BE-2020 Antwerpen. Voor leden buiten België bedraagt het lidgeld 28,00 EURO (gezin 30,00 EURO). De eventuele bankkosten worden gedragen door de opdrachtgever. Nummers van oudere jaargangen kunnen aangevraagd worden bij Judith De Keyse r, Vaartstraat 102, B-2845 Niel, [email protected] Kopij is altijd welkom en kan bezorgd worden aan André De Kesel ([email protected]) Sterbeeckia is a mycologica/ journal dedicated to Franciscus van Sterbeeck (1630-1693), a pioneer mycologist from Antwerp (Flanders, Belgium). Sterbeeckia publishes papers on all aspects of Belgian fungi. The journal is published by the Royal Flemish Mycological Society (Koninklijke Vlaamse Mycologische Vereniging, KVMV). Members receive the journal Sterbeeckia once per year and Sporen, a newsletter published 4 times a year. M embership fee for members outside Befgium is 28,00 EURO (family 30,00 EURO), plus bank charges, to KVMV vzw, University of Antwerp - Bioruimte, Groenenborgerlaan 171, 2020 Antwerpen, Belgium. /BAN: BE17 7370 1875 7621, BIC: KREDBEBB, mention: Lidgeld KVMV 2015. All previous editions of Sterbeeckia are still available and can be ordered from Judith De Keyser, Vaartstraat 102, B-2845 Niel, [email protected] Sterbeeckia and Sporen can be exchanged with other mycological journals Submission of papers is encouraged and should be directed to André De Kesel ([email protected]) Redactie André De Kesel Haesaertsplaats 15 B-2850 Boom Leescommissie van dit nummer: A. de Haan, M. de Haan, A. De Kesel, H. Otto-Baral Layout & design Pascale Holemans Zetel van de KVMV vzw. UAntwerpen-Bioruimte Groenenborgerlaan 171 B-2020 Antwerpen Website www.kvmv.be Led enadministratie Robert De Ceuster Kloosterbergstraat 34 3290 Diest Illustraties cover boven: Phlegmacium caerulescens, foto P. Verstraeten midden: Leccinum variicolor, aquarel 0 . Van de Kerckhove onder: Diacheopsis mitchellii, foto M. de Haan © Het copyright voor de tekst en de illustraties berust bij de KVMV en de auteurs. Auteurs dragen verantwoordelijkheid voor hun tekst en behouden het recht deze en illustraties voor andere doeleinden te gebruiken. Het is niet toegestaan om volledige of gedeelten van artikelen of illustraties over te nemen zonder toestemming van de redactie en de auteurs. 2 Sterbeeckia 34: 3-6 (2016) MVRMECOPHILOUS LABOULBENIALES (ASCOMVCOTA) IN BELGIUM ANDRÉ DE KESEL1, DANNY HAELEWATERS2 & WOUTER DEKONINCK3 1 Botanie Garden Meise, Nieuwelaan 38, 1860 Meise, Belgium 2Department of Organismic and Evolutionary Biology, Harvard University, 22 Divinity Avenue, Cambridge MA 02138, USA 3 Royal Belgian lnstitute of Natural Sciences, Vautierstraat 29, 1000 Brussels, Belgium (corresponding author: [email protected]) Summary This paper presents the first record of Rickia wasmannii (Laboulbeniales) trom Myrmica sabuleti in Belgium. Aspects of prevalence and thallus density of R. wasmannii are discussed, and a description and illustrations are given. Screening of the oldest colony of Lasius neglectus in Belgium (Ghent University Botanie Garden) did not reveal infections w ith Labou/benia formicarum. Samenvatting Deze bijdrage meldt de eerste Belgische vondst van Rickia wasmannii (Laboulbeniales) op Myrmica sabuleti (Zandsteek­ mier). Aspecten met betrekking tot frequentie en thallusdensiteit van Rickia wasmannii worden besproken, en een mor­ fologische beschrijvlng en illustraties worden gegeven. Screenen van de oudste gekende kolonie van Lasius neglectus (Plantentuin Universiteit Gent) leverde geen infecties met Laboulbenia formicarum. Keywords: Rickia, Hymenoptera, Myrmica. lntroduction Worldwide six species of Laboulbeniales (Fungi, Asco­ collected in several sites in Belgium and one site in the mycota) have been reported on ants (Hymenoptera, Netherlands. Nests were detected at sight and workers Formicida e). Based on the distribution of ants in Belgium were collected either with a mouth-operated aspirator, (Dekoninck et al. 2012), two species of myrmecophilous or with flexible tweezers (Leonard type). lndividuals were Laboulbeniales could be expected to occur in Belgium: immediately stored in 96% denaturated ethanol. Laboulbenia formicarum Thaxt. and especially Rickia Screening for infection and removal of thalli was done wasmannii Cava ra. at SOx magnification using an Olympus SZ61 stereo­ Laboulbenia formicarum has been reported from microscope. Thalli were mounted in Amann medium Spain, Madeira (Herraiz & Espadaler 2007), and France (Benjamin 1971) and slides were sealed with transparent (Espadaler & Santamarfa 2012) on Lasius neglectus Van nail varnish. Drawings an d measurements were made Loon etal., 1990. Thi s invasive ant producessuper-colonies usingan Olympus BXSl Iight microscopewith drawingtube, and was accidentally introduced in Belgium about 20 digital camera and AnalySIS (Soft lmaging System GmbH). years ago (Dekoninck et al. 2002). At this time only a few ldentification of ants was done using Seifert (2007). localities are known for this ant (Dekoninck et al. 2012), Microscope slides are deposited at the Herbarium of the one of which was screened in this study. Botanie Garden Meise, Belgium (BR). Ant specimens are Rickia wasmannii is the type species of Rickia Cavara, stored in RBINS collections (Brussels) . a very diverse genus of Laboulbeniales counting 161 described species worldwide (Santamarfa et al. 2016). Results Although representatives of Rickia can be found on a wide variety of phylogenetica lly very different 1. Laboulbenia formicarum Thaxt. hosts, most species are host specific. Rickia Screening of over 100 Lasius neglectus workers from wasmannii only grows on ants and has been the Ghent University Botanica ! Garden (Sl0 2'7.35"N, reported from nine species, all within the genus Myrmica 03°43'19.62"E) revealed no infection with Laboulbenia Latreille, 1804 (Haelewaters et al. 2015a). formicarum. Although Lasius neglectus is being reported Since its description R. wasmannii has been reported in an increasing number of sites in Europe (Mabelis et from sixteen European countries (Haelewaters et al. al. 2010), infected populations are reported only from 201Sa), but so far not from Belgium. After the recent Madeira, Spain and France (Espada Ier &Santamaria 2012). reports on Rickia wasmannii in the Netherlands The reported prevalence of L. formicarum on L. neglectus (Haelewaters 2012, Haelewaters et al. 2015a, 2015b) just fluctuates between 28.8-88% (Herriaz & Espadaler 2007, across the Belgian border, we decided to sample Myrmica Espadaler et al. 2011). An extensive study in Hungary spp. in a few Belgian localities. This paper presents the (Tartally & Báthori 2015) revealed the absence of first record of Rickia wasmannii in Belgium and an update L. farmicarum in all 21 known populations of Lasius on the data available from a Dutch study site (Gulpen­ neg/ectus in Hungary. In that study and also in ours, a Wittem) studied by Haelewaters et al. (2015a, 201Sb). sample of 100 specimens per locality was used to determine presence or absence of the parasite. Based on Materials and methods our observations we think it is safe to conclude that the Lasius neglectus and Myrmica spp. ant workers were parasite is most probably not present in the population 3 sampled in Ghent. lt would be interesting to keep germinate and produce mature thalli, the ant can further monitoring this population and ether large L. neglectus infect itself (autogrooming) and ethers by direct contact populations in Belgium for Laboulbeniales. (allogrooming) (Haelewaters et al. 2015b). In this respect there is little or no difference with Laboulbeniales from beetles (Coleoptera). However, the gender re lated 2. Rickia wasmannii Cava ra infection patterns we often observe in Laboulbeniales Malpighia 13: 182 (1899) from beetles (De Kesel 1993, 1995; Goldman & Weir Select. icones: Cavara 1899 (Tav. VI); Santamarfa 1989 2012) are evidently absent in worker ants infected (Lám . Lll l d-e); Espadaler & Santamaria 2012 (Fig. 4a-b). with R. wasmannii. In fact, all heavily infested ants (see Fig. la-e. further) exhibita similar infection pattern. - Prevalence and sampling methods Description: thallus hyaline, except for the black foot and The infected specimens we found in Gulpen-Wittem the basal septa of appendages and antheridia, 148-195 belong to Myrmica scabrinodis. From this site R. µm long. Receptacle one-layered, unbranched, triseriate; wasmannii was reported from M. sabuleti, M . scabrinodis basal cell very long, 60-91 µm . Ventral (anterior) and M. ruginodis Nylander, 1846 (Haelewaters et al. se ries co mposed of 4-5(-6) receptacle cells, each 2015a, 2015b). Thallus density and parasite prevalence with one smaller apical cell. Median (axial) series was based on pitfall data and found highest on Myrmica co mposed of 5-7 squarrish receptacle cells, the sabuleti, followed by M. scabrinodis, especially after lowermost distinctly
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