Smittium peculiare R.T. William & Strongman, Botany

Barón, Daniel E. & Valle, Laia Guàrdia, 2018, First record of trichomycetes associated with aquatic insects from Colombian Moorland and Andean forests, Phytotaxa 361 (1), pp. 1-24 : 13-14

Smittium peculiare R.T. William & Strongman, Botany 91: 389. 2013. ( Figs 49–52 )

Specimens examined: — COLOMBIA. SANTANDER: Berlin ; Quebrada El Cardal prepared from Chironomidae larvae, D. Baron, COL16 –Tr53 .

Comments: — S. peculiare was described from Canada, on the basis of its long cylindrical trichospores ( William and Strongman 2012). Our Colombian specimens present trichospores with identical characteristics, without median bulge, measuring 30–33 × 2.9–3.3 μm [26–31(–37) × 2–4 μm in the original description, Williams and Strongman 2013], with a short collar 3–4.5 μm (2–3 μm according to Williams and Strongman 20212), and a holdfast 4.5–6 μm diam. Pseudo-rhizoidal and amorphous material as originally described. Thalli are characteristically verticillate producing 2–6 generative cells per fertile branch, shorter than the trichospores. Zygospores were not found.

FIGURES 52 –54. Smittium simulii from Simuliidae . 52. Detail of the basal cell (arrow). 53–54. Thallus overview and trichospores with a media bulge detail. Scale bar for Fig. 49 = 50 μm; for Figs 50 –54 = 25 μm.

Figures

FIGURES 49–52. Smittium peculiare from Chironomidae. 49. Thallial overview, note verticilliate branching. 50. Basal region with pseudorizoidal and amorphous holdfast (arrow), cylindrical trichospores also present. 51. Loose trichospores with collar.