Aderkomyces

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Aderkomyces
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Graphidales
Family: Gomphillaceae
Genus: Aderkomyces
Bat. (1961)
Type species
Aderkomyces couepiae
Bat. (1961)

Aderkomyces is a genus of lichen-forming fungi in the family Gomphillaceae. [1] Originally established in 1961 for a single species from Brazil, the genus was later expanded to include many species previously classified in the related genus Tricharia , all sharing distinctive white bristle-like structures and flattened fruiting bodies. Recent molecular studies suggest that Aderkomyces as currently defined may not represent a natural evolutionary group, leading to ongoing reclassification of many species into other genera.

Contents

Taxonomy

Aderkomyces was introduced in 1961 by the Brazilian mycologist Augusto Chaves Batista for a foliicolous lichen with fan-shaped (flabelliform) hyphophores , Aderkomyces couepiae. [2] That species was later transferred to Tricharia as T. couepiae. [3] In their family-wide revision of the family Gomphillaceae, Robert Lücking, Emmanuël Sérusiaux and Antonín Vězda resurrected Aderkomyces to accommodate a set of species previously placed in Tricharia (in the loose sense) that share white setae , often applanate (flattened) apothecia with a hyphal excipulum , and at least partly flabellate hyphophores. They treated a "core group" centred on the type A. couepiae and including Tricharia heterella (with Psathyromyces rosacearum as its synonym), whose members characteristically have a smooth thallus, large applanate apothecia and flabelliform hyphophores. [4]

The same work outlined additional groupings now placed in Aderkomyces: one centred on T. cubana and T. guatemalensis with small, sessile, dark apothecia and an almost prosoplectenchymatous excipulum; a second around T. albostrigosa, with sessile, pale apothecia and a hyphal excipulum; and a residual set centred on T. cretacea whose relationships remain unclear owing to poorly known hyphophores and/or diahyphae. Overall, Aderkomyces is distinguished within the Echinoplaca–Tricharia grade by its white setae, non-crystalline thallus and hyphal excipulum, whereas superficially similar Arthotheliopsis differs by having Echinoplaca-like adnate apothecia and slightly differentiated diahyphae. [4]

As part of regularising the genus concept, Lücking and colleagues made numerous new combinations in Aderkomyces for species formerly placed in Tricharia (and, in one case, under other names), including A. albostrigosus, A. armatus, A. carneoalbus, A. cretaceus, A. cubanus, A. deslooveri, A. dilatatus, A. fumosus, A. heterellus and A. guatemalensis, among others. These changes reflect the shared character suite (white setae; hyphal excipulum; flabellate or related hyphophore types) that separates Aderkomyces from both Tricharia s.str. and allied genera within Gomphillaceae. [4]

A 2024 morphology-based 'phylogenetic binning' analysis—assigning species to likely evolutionary groups from their traits—showed that Aderkomyces is polyphyletic, with its species split among multiple lineages. The type species, A. couepiae, binned with Arthotheliopsis (100% support), whereas a separate clade containing sequenced A. papilliferus and A. dilatatus represents Aderkomyces in the strict sense ( sensu stricto ). The authors note that, if future sequencing confirms the type placement, Aderkomyces would apply to the Arthotheliopsis-like clade and the "papilliferus clade" would require a different generic name. [5]

The same analysis reassigns several species previously placed in Aderkomyces to other genera now recognised in the family: e.g., A. heterellus, A. planus and A. pruinosus with Psathyromyces ; A. albostrigosus, A. deslooveri, A. microcarpus, A. guatemalensis and A. verrucosus with Spinomyces ; A. carneoalbus, A. purulhensis and (provisionally) A. lobulicarpus with Roselviria ; A. microtrichus in the Calenia – Echinoplaca grade; A. verruciferus with mixed signal (often with Verruciplaca ); and several names (e.g. A. cretaceus, A. cubanus, A. fumosus, A. ramiferus, A. subplanus) remaining unresolved. Many of these transfers were formalised alongside the description of new genera in a companion work. [5]

Species

As of July 2021, Species Fungorum accepts 28 species of Aderkomyces. [6]

References

  1. ↑ Wijayawardene, Nalin; Hyde, Kevin; Al-Ani, LKT; S, Dolatabadi; Stadler, Marc; Haelewaters, Danny; et al. (2020). "Outline of Fungi and fungus-like taxa". Mycosphere. 11: 1060–1456. doi: 10.5943/mycosphere/11/1/8 . hdl: 10481/61998 .
  2. ↑ Batista, A.C. (1961). "Um pugilo de gêneros novos de líquens imperfeitos" (PDF). Publicações Instituto de Micologia, Universidade do Recife (in Portuguese). 320: 1–31. Archived from the original (PDF) on 16 March 2024. Retrieved 2 May 2014.
  3. ↑ Lücking, R. (1999). "Addiciones y correcciones al conocimiento de la líquenoflora foliícola de Costa Rica. La familia Asterothyriaceae y el género Chroodiscus (Thelotremataceae), con un análisis filogenético". Cryptogamie Mycologie. 20: 193–224.
  4. 1 2 3 Lücking, Robert; Sérusiaux, Emmanuël; Vězda, Antonín (2005). "Phylogeny and systematics of the lichen family Gomphillaceae (Ostropales) inferred from cladistic analysis of phenotype data". The Lichenologist. 37 (2): 123–170. doi: 10.1017/S0024282905014660 .
  5. 1 2 Xavier-Leite, A.B.; Goto, B.T.; Cáceres, M.E.S.; Lücking, R. (2024). "Reclassification of species in the lichenized family Gomphillaceae Walt. Watson ex Hafellner (Ascomycota: Graphidales) using morphology-based phylogenetic binning". Cryptogamie, Mycologie. 45 (8): 83–99. doi:10.5252/cryptogamie-mycologie2024v45a8.
  6. ↑ "Aderkomyces". Catalogue of Life . Species 2000: Leiden, the Netherlands. Retrieved 18 October 2025.
  7. ↑ Lücking, Robert (2008). Foliicolous Lichenized Fungi. Flora Neotropica. Vol. 103. Bronx, NY: New York Botanical Garden Press. p. 461. ISBN   978-0-89327-491-7.
  8. ↑ Pinokiyo, A.; Singh, K.P. (2006). "New species and new record of foliicolous lichenized fungi from Sikkim (India)". Mycotaxon. 97: 57–61.
  9. ↑ Lumbsch, H.T.; Ahti, T.; Altermann, S.; De Paz, G.A.; Aptroot, A.; Arup, U.; et al. (2011). "One hundred new species of lichenized fungi: a signature of undiscovered global diversity" (PDF). Phytotaxa. 18 (1): 9–11. doi:10.11646/phytotaxa.18.1.1.
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