Harpella melusinae Leger & Duboscq, 1929.

Valle, Laia Guardia & Stoianova, Desislava, 2020, First record of Harpellales, Orphellales (Kickxellomycotina) and Amoebidiales (Mesomycetozoea) from Bulgaria, including a new species of Glotzia, MycoKeys 67, pp. 55-80 : 55

Harpella melusinae Leger & Duboscq, 1929. Figs 14-15

Specimens examined.

Site 2: slides BUL-2-1, BUL-2-6, BUL-2-7, BUL-2-10; site 4: slides BUL-4-10; Site 7: slides BUL-7-1, BUL-7-2, BUL-7-3; Site 8: slides BUL-8-3; site 12 slide: BUL-12-5

Notes.

A cosmopolitan or sub-cosmopolitan species, widespread in the Northern Hemisphere, it is common in European localities where their hosts were available. It has been found attached to the peritrophic matrix of Simuliidae larvae in different Bulgarian localities. Our specimens have the typical characteristics of the species, distinguishable on the basis of trichospore morphometry (Fig. 14 ) and holdfast structure (Fig. 15 ) ( Léger and Duboscq 1929a). The trichospores in our specimens measured 50-60 × 6-7 μm and were variable in shape, from nearly straight to allantoid or slightly coiled.

Figures

Figures 11 - 16. Various species of Harpellales. 11 - 13 Graminella microspora from Baetidae nymphs: 11 thallus overview, with inflated basal cell structures from which propagules arise or are extruded (note: one empty basal cell which has extruded its cellular content, arrow); young zygospores can also be observed (arrowhead) 12 a cluster of basal cells 13 fertile branch with a long series of minute trichospores; 14, 15 Harpella melusinae from Simuliidae larvae: 14 generative cells and allantoids or curved trichospores 15 basal cell and small conic holdfast 16 Legeriomyces ramosus from Baetidae nymphs, zygospores and zygosporophores. Scale bars: 25 μm in all figures.