- Beimforde C., Schmidt A.R., Tuovila H., Kaulfuss U., Germer J., Lee W.G. & Rikkinen J.
- 95: 101–129
The order Mycocaliciales (Ascomycota) comprises fungal species with diverse, often highly specialized
substrate ecologies. Particularly within the genus Chaenothecopsis, many species exclusively occur on fresh
and solidified resins or other exudates of vascular plants. In New Zealand, the only previously known species growing on plant exudate is Chaenothecopsis schefflerae, found on several endemic angiosperms in the
family Araliaceae. Here we describe three new species; Chaenothecopsis matai Rikkinen, Beimforde, Tuovila & A.R. Schmidt, C. nodosa Beimforde, Tuovila, Rikkinen & A.R. Schmidt, and C. novae-zelandiae
Rikkinen, Beimforde, Tuovila & A.R. Schmidt, all growing on exudates of endemic New Zealand conifers
of the Podocarpaceae family, particularly on Prumnopitys taxifolia. Phylogenetic analyses based on ribosomal DNA regions (ITS and LSU) grouped them into a distinct, monophyletic clade. This, as well as
the restricted host range, suggests that all three taxa are endemic to New Zealand. Copious insect frass
between the ascomata contain ascospores or show an early stage of ascomata development, indicating that
the fungi are spread by insects. The three new species represent the first evidence of Chaenothecopsis from
any Podocarpaceae species and the first from any gymnosperm exudates in New Zealand.
Keywords: Chaenothecopsis, Mycocaliciales, New Zealand, Phyllocladus, plant exudate, Podocarpaceae, Prumnopitys,
- Monday, 20 February 2023 22:16