Paramoebidium hamatum Bench & MM White, 2012

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

Paramoebidium hamatum Bench & MM White, 2012 Fig. 29

Specimens examined.

Site 1: slides BUL-1-1, BUL-1-2.

Notes.

Paramoebidium hamatum was described originally from USA in Chironomidae , Ameletidae and Baetidae ( Ephemeroptera ). In Bulgaria, it is associated with Baetidae nymphs ( Baetis sp. B. rhodani and B. melanonyx ). The species was recorded before in Europe (Spain, Busquets et al. 2018). Bulgarian specimens measured 180-300 × 12-25 µm, with the broader diameter at the proximal end, near the holdfast, thinner at the distal end (Fig. 29 ); cystospores observed, measuring about 10 × 4-4.5 µm. The species was identified by the curved portion at the basal one-eighth to one-third of the thallial length and by its holdfast characteristics ( Bench and White 2012).

Figures

Figures 26 - 30. Various species of Amoebidiales. 26 Paramoebidium angulatum from Nemouridae nymphs, thalli overview with typical angular shape at the upper section 27 Paramoebidium chattoni from Simuliidae larva, overview, with thin filaments of Simuliomyces microsporus 28 Paramoebidium curvum from Simuliidae larva, overview 29 Paramoebidium hamatum from Baetidae nymphs, overview of various thalli in different growth phases 30 Paramoebidium inflexum from Nemouridae nymphs, thallus overview. Scale bars: 50 μm (26, 29, 30), 100 μm (27), 25 μm (28).