Cucitella
Cucitella Jaklitsch & Voglmayr, in Jaklitsch et al., Studies in Mycology 90: 83 (2017).
Index Fungorum number: IF 823002; Facesoffungi number: FoF 08184, 1 morphological species (Species Fungorum 2022), 1 species with molecular data.
Saprobic on host. Sexual morph: Ascomata depressed subglobose to pyriform, black, immersed in bark on subiculum, erumpent through cracks in the periderm, aggregated or laterally fused in clusters forming compact pustules causing small bumps on the bark surface. Ascomatal apices often papillate, black, rounded or apically flattened, with circular or angular outline. Peridium pseudoparenchymatous, thickest around the ostioles. Hamathecium of numerous branched paraphyses with free ends among immature asci. Asci cylindrical, bitunicate, fissitunicate, with an ocular chamber, short stipe and a simple or knob-like base, containing 2–6 obliquely uniseriately arranged ascospores. Ascospores ellipsoid, with thick wall, several transverse and longitudinal septa, with three main transverse septa thicker than others, slightly to distinctly constricted at the median primary septum, dark brown when mature, often with lighter ends. Asexual morph: Pycnidia occurring in association with ascomata on natural substrate, aggregated, globose, collapsing cupulate, shiny black. Peridium pseudoparenchymatous, inner side lined by densely stacked simple or basally branched conidiophores with lateral pegs and solitary terminal, narrowly lageniform to subcylindrical phialides. Conidia formed on pegs and phialides, 1-celled, cylindrical to allantoid, hyaline, smooth (adapted from Jaklitsch et al. 2018).
Type species: Cucitella opali Jaklitsch & Voglmayr
Notes: Cucitella is characterised by depressed subglobose to pyriform ascomata, cylindrical, bitunicate, fissitunicate, ellipsoid asci with thick wall, and ellipsoid ascospores with several transverse and longitudinal septa. Cucitella resembles Fenestella and Parafenestella in having compact pustules and ascospores with a relatively large number of septa and lighter ends but Cucitella is phylogenetically distinct from these two genera. Cucitella is morphologically and phylogenetically a distinct genus in Cucurbitariaceae. Molecular markers available for Cucitella are ITS, SSU, BTUB, RPB2 and TEF-1.
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