New species and new records of freshwater ascomycetes from Brazil and Costa Rica

Abstract

During independent surveys for freshwater ascomycetes in Brazil and Costa Rica, two new species, Torrentispora pilosa and Vertexicola ascoliberatus, and nine previously described species were recovered. Among the described species, Annulatascus biatriisporus, Anthostomella aquatica, Tamsiniella labiosa and Torrentispora crassiparietis are reported for the first time from the western hemisphere, Aniptodera chesapeakensis, Chaetosphaeria lignomollis and Jahnula seychellensis are new records for South America and Annulatascus velatisporus and Ophioceras venezuelensis are reported for the first time for Brazil. The description of the genus Torrentispora is emended to accommodate T. pilosa. The new species are described and illustrated and a brief description is provided for all new records.

Phylogenetic classification and generic delineation of Calyptosphaeria gen. nov., Lentomitella, Spadicoides and Torrentispora (Sordariomycetes)

“…Torrentispora can be distinguished from other members of the Xenospadicoidales in having ascomatal necks that are never sulcate, a massive apical annulus and hyaline, thick-walled ascospores (except in T. aquatica , see Discussion ). The delayed development of septa in ascospores observed in T. biatriispora , T. crassiparietis and T. pilosa ( Barbosa et al. 2013 ) is also typical of the closely related Calyptosphaeria , Lentomitella and Spadicoides .…”

“…It is characterised by immersed to partially erumpent or almost superficial, mostly glabrous ascomata with a rostrate or cylindrical neck, disintegrating paraphyses, hyaline, ellipsoidal to fusiform to elongate-fusiform ascospores and a distinct apical annulus. Barbosa et al. (2013) emended the generic description by including taxa with glabrous or hairy ascomata, asci with simple or bipartite apical rings and ascospores with or without a gelatinous sheath that become septate at maturity.…”

“…Four previously described species are accepted, i.e. T. crassiparietis , T. fibrosa , T. fusiformis and T. pilosa ( Hyde et al., 2000 , Fryar and Hyde, 2004 , Barbosa et al., 2013 ). Based on novel DNA sequences and morphology, T. calembola and T. novae-zelandiae are described as new to science and three new combinations in Torrentispora are proposed below for Ceratostomella dubia , Fusoidispora aquatica and Pseudoannulatascus biatriisporus .…”

“…It was reported from submerged wood from the tropics in the southern and northern hemispheres including Australia ( Hyde 1995 ), China ( Tsui et al. 2002 ), Costa Rica ( Barbosa et al. 2013 ) and the Seychelles ( Hyde & Goh 1998 ).…”

“…2000 ) and Pseudoannulatascus ( Luo et al. 2015 ) characterised by ascomata with a long-neck, cylindrical asci and fusiform, hyaline, smooth- and thick-walled, usually aseptate ascospores, rarely with delayed formation of septa ( Hyde et al., 2000 , Fryar and Hyde, 2004 , Barbosa et al., 2013 ). A monotypic family, the Lentomitellaceae , was introduced by Zhang et al.…”