A taxonomic revision of the genus Zwackhiomyces in Ukraine is provided. The genus is characterized by globose to pyriform ascomata, brown wall pigments deposited between the cells, branched and anastomosing interascal filaments, fissitunicate asci and 0–1-sepate hyaline ascospores. Previously, ten species of Zwackhiomyces were known in Ukraine. They are Z. berengerianus, Z. calcariae, Z. cervinae, Z. coepulonus, Z. diederichii, Z. dispersus, Z. lecanorae, Z. lithoiceae, Z. polischukii, and Z. sphinctriniformis. Three species, Zwackhiomyces calcisedus, Z. inconspicuus, and Z. macrosporus, are for the first time reported in the country. Zwackhiomyces dispersus is a new record for the plain part of Ukraine. All species of these lichenicolous fungi were found on 10 different host genera. Rinodina calcarea is a new host species for Z. inconspicuus. All examined species have commensal life strategies, and infection does not cause any visible damage or discoloration of the host thallus and apothecia. Zwackhiomyces lecanorae and Z. inconspicuus can grow on several different host genera. Other species show strict host specificity. Two species, Z. coepulonus and Z. lecanorae, are apparently widespread in Ukraine. Description, host lichen species, data about distribution, examined specimens and notes are provided for each species. An original key to species of Zwackhiomyces in Ukraine is proposed.

Keywords: lichenicolous life strategy, new records, phycoparasites

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1. Alstrup V., Olech M. 1993. Lichenicolous fungi from Spitsbergen. Polish Polar Research, 14: 33–42.
2. Boiko T.O., Khodosovtsev A.Ye. 2011. Ukrainian Botanical Journal, 68(2): 254–258.
3. Calatayud V., Triebel D., Pérez-Ortega S. 2007. Zwackhiomyces cervinae, a new lichenicolous fungus (Xanthopyreniaceae) on Acarospora, with a key to the known species of the genus. The Lichenologist, 39(2): 129–134. https://doi.org/10.1017/S002428290700583X
4. Darmostuk V.V. 2016. Ukrainian Botanical Journal, 73(3): 262–267. https://doi.org/10.15407/ukrbotj73.03.262
5. Darmostuk V.V. 2018. In: Advances in botany and ecology (Kyrylivka, 2–5 September, 2018). Kyiv, p. 15.
6. Darmostuk V.V. 2019. Ukrainian Botanical Journal, 76(2): 101–113. https://doi.org/10.15407/ukrbotj76.02.101
7. Darmostuk V.V., Khodosovtsev A.Ye. 2017. Lichenicolous fungi of Ukraine: an annotated checklist. Studies in Fungi, 2(1): 138–156. https://doi.org/10.5943/sif/2/1/16
8. Darmostuk V.V., Khodosovtsev A.Ye., Naumovich G.O., Kharechko N.V. 2018. Roselliniella lecideae sp. nov. and other interesting lichenicolous fungi from the Northern Black Sea region (Ukraine). Turkish Journal of Botany, 42(3): 354–361. https://doi.org/10.3906/bot-1709-5
9. Grube M. 2005. Frigidopyrenia – a new genus for a peculiar subarctic lichen, with notes on similar taxa. Phyton, 45(2): 305–318.
10. Grube M., Hafellner J. 1990. Studien an flechtenbewohnenden Pilzen der Sammelgattung Didymella (Ascomycetes, Dothideales). Nova Hedwigia, 51(3–4): 283–360.
11. Halıcı M.G., Candan M. 2009. New lichenicolous fungi from Turkey. Nova Hedwigia, 88(3): 483–490. https://doi.org/10.1127/0029-5035/2009/0088-0483
12. Harris R.D. 1995. More Florida lichens, including the 10 cent tour of the pyrenolichens. Bronx; New York: The New York Botanical Garden, 191 pp.
13. Khodosovtsev A.Ye. 2011. Chornomorski Botanical Journal, 7(2): 194–198. https://doi.org/10.14255/2308-9628/11.72/8
14. Khodosovtsev A.Ye., Klymenko V.M. 2015. Chornomorski Botanical Journal, 11(2): 217–222. https://doi.org/10.14255/2308-9628/15.112/6
15. Khodosovtsev A.Ye., Darmostuk V.V. 2016. New species of lichenicolous fungi for Ukraine. Folia Cryptogamica Estonica, 53: 93–99. https://doi.org/10.12697/fce.2016.53.11
16. Khodosovtsev A.Ye., Darmostuk V.V. 2017. Zwackhiomyces polischukii sp. nov., and other noteworthy lichenicolous fungi from Ukraine. Polish Botanical Journal, 62(1): 27–35. https://doi.org/10.1515/pbj-2017-0006
17. Khodosovtsev A.Ye., Darmostuk V.V., Didukh Ya.P., Pylypenko I.O. 2019. Verrucario viridulae-Staurotheletum hymenogoniae, a new calcicolous lichen community as a component of petrophytic grassland habitats in the Northern Black Sea region. Mediterranean Botany, 40(1): 21–32. https://doi.org/10.5209/MBOT.62891
18. Khodosovtsev A.Ye., Maliuga N.G., Darmostuk V.V., Khodosovtseva Yu.A., Klymenko V.M. 2017. Chornomorski Botanical Journal, 13(4): 481–515. https://doi.org/10.14255/2308-9628/17.134/6
19. Kondratyuk S.Ya. 1999. Lichenicolous fungi. In: Study of mycobiota diversity of Ukraine (Lichenicolous, Septoria and Puccinia fungi). Eds S.Ya. Kondratyuk, T.V. Andrianova, Yu.Ya. Tykhonenko. Kyiv: Phytosociocentre, pp. 8–43.
20. Kondratyuk S.Ya. 2005. Ukrainian Botanical Journal, 62(4): 509–516.
21. Lawrey J.D., Diederich P. 2019. Lichenicolous fungi – worldwide checklist, including isolated cultures and sequences available. Retrieved from http://www.lichenicolous.net
22. Pirogov M., Chepelevska N., Vondrák J. 2014. Carbonea in Ukraine. Studia Biologica, 8(1): 137–148. https://doi.org/10.30970/sbi.0801.317
23. Roux C. 2017. Catalogue des lichens et champignons lichénicoles de France métropolitaine, vol. 1. 2^e éd. Fontainebleau: Association française de lichénologie (A. F. L.), 1581 pp.
24. Suija A., de los Rios A., Pérez-Ortega S. 2015. A molecular reappraisal of Abrothallus species growing on lichens of the order Peltigerales. Phytotaxa, 195(3): 201–226. https://doi.org/10.11646/phytotaxa.195.3.1
25. Wijayawardene N.N., Hyde K.D., Rajeshkumar K.C., Hawksworth D.L., Madrid H., Kirk P.M., Karunarathna S.C. 2017. Notes for genera: Ascomycota. Fungal Diversity, 86(1): 1–594. https://doi.org/10.1007/s13225-017-0386-0
26. Zhurbenko M.P., Brackel W. von. 2013. Checklist of lichenicolous fungi and lichenicolous lichens of Svalbard, including new species, new records and revisions. Herzogia, 26(2): 323–359. https://doi.org/10.13158/heia.26.2.2013.323