Smittium dipterorum Lichtw., 1997.

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

Smittium dipterorum Lichtw., 1997. Fig. 17

Specimen examined.

site 12: slides BUL-12-1; BUL-12-4.

Notes.

This species was previously known from Costa Rica ( Lichtwardt1997), Spain ( Valle and Santamaria 2004), Dominican Republic (Valle and Cafaro, 2010) and Mexico ( Valle et al. 2011) in the tract of Simuliidae and Chironomidae . Bulgarian specimens were associated with Chironomidae midges ( Chironomus sp.). They had cylindrical-elongated trichospores measuring 16-19 × 3-4 µm, with a short collar about 2.5 µm, slightly flared outwards. The thallus is branched at the base, with verticillate apical branching (Fig. 17 ). Each fertile branch has 4-6 generative cells. Specimens from Bulgaria resemble most of those described from Spain.

Figures

Figures 17 - 20. Various species of Harpellales. 17 Smittium dipterorum from Chironomidae larvae; thallus overview with fertile branches and trichospores 18 Spartiella barbata from Baetidae nymphs, fertile branches with trichospores 19 Stachylina nana from Chironomidae larvae, thallus overview with trichospores 20 Stipella vigilans from Simuliidae larvae, thallus with mucilaginous material at the basal cell (arrow). Scale bars: 25 μm in all figures.