Sergio Pérez-Ortega

Lepraria torii is a species of corticolous and lignicolous (bark- and wood-dwelling), leprose lichen in the family Stereocaulaceae. It is found in northwestern North America.

Abrothallus halei is a species of lichenicolous (lichen-dwelling) fungus in the family Abrothallaceae. It was formally described as a new species in 2010 by the lichenologists Sergio Pérez-Ortega, Ave Suija, David Leslie Hawksworth, and Rolf Santesson. The type specimen was collected by Cliff Wetmore east of Hare Lake (Superior National Forest, Minnesota) at an elevation of 550 m (1,800 ft); there it was found on the foliose lichen Lobaria quercizans, which itself was growing on the bark of Acer saccharum. The fungus has also been collected in West Virginia, Maine, as well as in Norway. The

Zhurbenkoa is a genus of lichenicolous (lichen-dwelling) fungi in the family Malmideaceae. It comprises three species. Zhurbenkoa fungi grow on the thalli of species in the widespread lichen genus Cladonia. The genus was established in 2019 and named after the Russian scientist Mikhail Zhurbenko for his work studying fungi that live on lichens. These tiny parasites produce minute dark spots less than half a millimetre wide on their host lichens, and the three species can be distinguished by differences in their ascospore shapes and sizes.

Wahlenbergiella tavaresiae is a species of saxicolous (rock-dwelling), crustose lichen in the family Verrucariaceae. Known from several locations in the San Francisco Bay area of the United States, it is a marine lichen that inhabits intertidal zones, and as such is immersed in seawater on a regular basis. Associated algal species include the red algae Hildenbrandia and Mastocarpus papillatus, and the brown algae Pelvetiopsis and Fucus. Petroderma maculiforme, a brown alga, is the photobiont partner in the lichen.

Llimoniella cinnabarinae is a species of lichenicolous (lichen-dwelling) fungus in the family Cordieritidaceae. It occurs in Alaska, where it grows on the thallus on the lichen Ramboldia cinnabarina.

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Harpidium gavilaniae is a little-known species of saxicolous (rock-dwelling), crustose lichen in the family Harpidiaceae. It is found in the Northern Cape Province in South Africa.

Botryolepraria neotropica is a species of saxicolous (rock-dwelling), byssoid (cottony) lichen in the order Verrucariales. It was formally described as a new species in 2010 from the Neotropics, and is known from shaded, damp places where it grows on sheltered rock surfaces, sometimes among liverworts. Under low magnification its pale, uncorticated thallus can resemble a granular Lepraria-like crust, but it differs from its relative B. lesdainii in having larger granules and in producing zeorin without lesdainin.

Abrothallus nephromatis is a widely distributed species of lichenicolous fungus in the family Abrothallaceae. It was formally described as a new species in 2015 by Ave Suija and Sergio Pérez-Ortega. The type specimen was collected near Dawson Falls in Wells Gray Provincial Park (British Columbia, Canada) at an elevation of about 800 m (2,600 ft), where it was found on a Nephroma parile lichen that itself was growing on a dead trunk of birch tree. The species epithet refers to the host genus, Nephroma. Abrothallus nephromatis has been collected from Africa (Tanzania, Uganda); Asia (Russian Far

Abrothallus etayoi is a species of lichenicolous fungus in the family Abrothallaceae. Found in Mexico, it was formally described as a new species in 2015 by Ave Suija and Sergio Pérez-Ortega. The type specimen was collected from Angahuan (Michoacán) at an elevation of 2,470 m (8,100 ft); there, in a pine-oak forest, it was found growing on a Sticta lichen that itself was growing on oak. The species epithet honours Spanish lichenologist Javier Etayo, "a keen collector of lichenicolous fungi and lichens". Abrothallus etayoi differs from other Abrothallus fungi by the shape of its pycnidia

Abrothallus ertzii is a species of lichenicolous fungus in the family Abrothallaceae. Found in Canada, it was formally described as a new species in 2015 by Ave Suija and Sergio Pérez-Ortega. The type specimen was collected near Dawson Falls in Wells Gray Provincial Park (British Columbia), where it was found growing on the thallus of the foliose lichen Lobaria pulmonaria, which itself was growing on the trunk of a Thuja plicata tree. It has also been collected in Quebec. The species epithet honours Damien Ertz, who collected the type. Abrothallus ertzii is distinguished from other

Abrothallus eriodermae is a species of lichenicolous fungus in the family Abrothallaceae. Found in Alaska, South America, Jamaica, and Réunion island, it was formally described as a new species in 2015 by Ave Suija, Javier Etayo, and Sergio Pérez-Ortega. The type specimen was collected from the Bébour forest in La Reunion, growing on Erioderma papyraceum. It has also been recorded on Erioderma chilense, E. sorediatum, and E. wrightii. The species epithet refers to the host genus Erioderma.

Abrothallus doliiformis is a species of lichenicolous fungus in the family Abrothallaceae. Found in Peru, it was formally described as a new species in 2015 by Ave Suija and Sergio Pérez-Ortega. The type specimen was collected from Machu Picchu (Department of Cuzco) at an elevation of 2,484 m (8,150 ft), where it was growing on the thallus of an unidentified Sticta lichen. It is only known to occur at the type locality. The species epithet doliiformis refers to its doliiform (barrel-shaped) pycnidia. This feature, along with its hyaline, single-celled conidia (measuring 9.5–14.5 by 6–9.5 μm)

Abrothallus canariensis is a species of lichenicolous fungus in the family Abrothallaceae. Found in the Canary Islands, it was formally described as a new species in 2015 by Sergio Pérez-Ortega, Pieter van den Boom, and Ave Suija. The type specimen was collected from Chinobre (Santa Cruz de Tenerife), where it was found on a Pseudocyphellaria aurata lichen that itself was growing on a species of Erica. The species epithet refers to the area of its type locality. The fungus is similar to Abrothallus secedens, but unlike that species, has four-spored asci, and larger ascospores that measure

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Abrothallus boomii is a little-known species of lichenicolous (lichen-dwelling) fungus in the family Abrothallaceae. It parasitizes the lichen Nephroma tangeriense in Portugal. Named after the lichenologist Pieter van den Boom, this species is distinguishable from other Abrothallus species by its host preference and unique characteristics, including having six-spored reproductive structures (asci) and semi-immersed pycnidia with colourless spores. The fungus produces black, sometimes greenish-dusted surface structures on its host.

Abrothallus is a genus of lichenicolous (lichen-dwelling) fungi. It is the only genus in the monotypic family Abrothallaceae, which itself is the sole taxon in the order Abrothallales. Species produce small, blackish, nearly spherical fruiting bodies on the surface of their host lichens, often dusted with green or yellow powder (pruina). About 44 species are accepted, most of them parasites of leafy or shrubby macrolichens.

Abrothallus is a genus of lichenicolous (lichen-dwelling) fungi. It is the only genus in the monotypic family Abrothallaceae, which itself is the sole taxon in the order Abrothallales. Species produce small, blackish, nearly spherical fruiting bodies on the surface of their host lichens, often dusted with green or yellow powder (pruina). About 44 species are accepted, most of them parasites of leafy or shrubby macrolichens.

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Straminella printzenii is a species of crustose lichen in the family Lecanoraceae. It was described from Spain in 2011 and is a lichenicolous species that grows on other lichens, especially Umbilicaria. Recent phylogenetic work resurrected the genus Straminella for the former Lecanora varia group and transferred this species to it.

Heteroacanthella ellipsospora is a species of fungus of uncertain familial placement in the order Auriculariales. The fungus is lichenicolous (lichen-dwelling), and it parasitises the apothecia and thallus of the crustose lichen Glaucomaria carpinea.

Collemopsidiales is an order of fungi in the class Dothideomycetes. First circumscribed by Sergio Pérez-Ortega, Isaac Garrido-Benavent and Martin Grube in 2016, it contains a single family, Xanthopyreniaceae.

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