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LABOULBENIALES - Agentschap voor Natuur en Bos

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µm long, two-celled. Stalk cell of perithecium short, perithecium (110-)(-140) x(45-)(-60) µm, elliptical or long ovate, constricted and dark<strong>en</strong>ed subapically.Studied material [Coleoptera, Carabidae, Harpalinae]:Anthracus consputus (Duftschmid):Tilburg TWM, Kaaistoep-west, 128.8-394.6. Licht, 6.viii.08.Haelewaters 2a, 2b.Specificity and geographical distribution:Mainly on species of the g<strong>en</strong>us Acupalpus Latreille, also on Agonum Bonelli,Atranus Leconte, Badister Schell<strong>en</strong>berg, Baudia Ragusa and Dromius Bonelli inEurope (France, Italy, Germany, Poland), Asia (Korea) and North America(USA) (MAJEWSKI, 1994). Type on Atranus pubesc<strong>en</strong>s Dejean, USA.Remarks:Rhachomyces lasiophorus is new for the mycoflora of The Netherlands.Discussion:Anthracus consputus in this study is host for Rhachomyces lasiophorus. R.lasiophorus only parasitizes Acupalpus species; it is the only repres<strong>en</strong>tative ofthe g<strong>en</strong>us Rhachomyces parasitising Acupalpus species (MAJEWSKI, 1994).Anthracus is a subg<strong>en</strong>us of Acupalpus (pers. comm. PAUL VAN WIELINK, 2010).Concerning to DE KESEL (1997), thalli of Rhachomyces lasiophorus occur onmesothorax, metathorax and legs. In this study, specim<strong>en</strong>s of R. lasiophorushave be<strong>en</strong> collected from the elytra. The hosts of R. lasiophorus are typical forbanks of stagnant water, swamps and marshes (DESENDER et al., 1995), acommon habitat at De Kaaistoep.4.8. STICHOMYCES CONOSOMATIS THAXT.Figure XXII: Thallus of Stichomyces conosomatis (from Sepedophilus nigrip<strong>en</strong>nis, specim<strong>en</strong> 5b, thallus1). Scale bar = 50 µm. Picture by Danny Haelewaters (2010).Thallus (195-)263-295(-315) µm long, brown-yellowish, body of the peritheciumand app<strong>en</strong>dage dark<strong>en</strong>ed. Receptacle 67-95(-120) µm long, cell I about twotimes longer than broad, all superposed cells of the receptacle-app<strong>en</strong>dageaxis isodiametric or slightly elongated; cell II giving rise to one or twoperithecia, cell III to perithecia or – seldom – to antheridial branchlets, or sterile.App<strong>en</strong>dage axis consisting of 1-4 usually elongated cells, gradually smallertowards the <strong>en</strong>d of the axis; the distal cell continuing into antheridial or sterileprimary branch, the other axis cells separating corner cells; antheridialP a g e | 95

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