Arachnophora longa

Arachnophora longa Fryar & K.D. Hyde

Fryar, SC; Hyde, KD. 2018. Arachnophora longa sp. nov., a freshwater hyphomycete from far north Queensland, Australia. Mycotaxon. 133(1):9-14

Conidiophores macronematous, mononematous, brown, erect, unbranched, cylindrical, smooth, 1–4-septate, no constrictions at the septa, with percurrent proliferation, slightly bulbous at the base, single, 46–102 × 5–7.5 μm.

Conidiogenous cells monoblastic, integrated, terminal, cylindrical, smooth, pale brown to hyaline.

Macroconidia staurosporous, acrogenous, solitary, brown, dry, smooth, complex, composed of [i] a basal cell that is obconical, truncate, pale brown, and with a minute basal frill as a result of rhexolytic dehiscence and [ii] an irregular two-celled central body of 17–23 × 11–19 μm; each central cell giving rise to 1–3 brown to pale brown lateral cells, 6–9 × 5–9 μm, each in turn giving rise to a single fertile, tapering, hyaline arm, 16–43 × 2–3 μm, usually aseptate (occasionally 1-septate), 3-5 arms per macroconidium. Synanamorph: the apical cell of each macroconidial arm producing hyaline, aseptate, 5–10 × 1 μm, fusiform to clavate microconidia with minute denticles at their tip.