Mycelium not apparent. Perithecia solitary, superficial, nonstromatic, globose to broadly pyriform, ca. 160 µm high x 130-150 µm wide, nonpapillate, collapsing by lateral pinching, at first pale yellow but becoming amber colored, not changing color in 3% KOH; with white, stiff, erect, smooth, subacute, unbranched, aseptate setae, 50-80 µm long x 9-10 µm wide basally x 5.5-6.5 µm wide apically, lateral wall 3-4 µm thick, wall at tip thinner, lumen 1-2 µm wide, arising from the upper third of the perithecial wall. Perithecial wall covered with ca. 3 µm wide hyphae with walls 0.5 µm thick. Perithecial wall 15-20 µm wide, consisting of a single region of cells; cells ± elliptical in section, 5-10 x 2-3 µm, walls 0.5 µm thick; cells at perithecial apex elliptical, ca. 3 x 2 µm; ostiolar canal periphysate. Asci clavate, 35-50 x 10-13(-15) µm, apex broadly rounded, simple; 8-spored, ascospores arranged without order and completely filling each ascus. Ascospores fusiform to ellipsoidal, (13-)13.5-16(-18) x (3-)3.5-4.5(-5) µm, equally 2-celled or apical cell somewhat longer and broader than the basal cell, not constricted at the septum, smooth, colorless.
Characteristics in Culture. Colonies grown three weeks at 15-18°C, diffused daylight on CMD barely growing away from the original inoculum, salmon-colored, sterile.

Known Distribution. New Zealand: Auckland, known only from the type.

Habitat. On perithecia and associated mycelium of a sphaeriaceous pyrenomycete, possibly Chaetosphaeria sp.

Perithecia globosa vel late pyriformia, ca. 160 µm alta x 130-150 lata, flavida. Setae rectae, simplices, eseptatae, 50-80 µm longee, basi 9-10 µm et apicem versus 5.5-6.5 µm latae. Ascosporae fusiformes vel ellipsoideae, (13-)13.5-16(-18) x (3-)3.5-4.5(-5) µm; bicellulares. Status anamorphicus ignota.
Holotypus. New Zealand (PDD: Samuels 81-81).

Etymology of the Specific Epithet. Refers to the setose perithecia.
Note. Unfortunately, cultures derived from ascospores of this species were lost before conidia were formed.

Holotype. New Zealand. North Island. Auckland: Waitemata City, Waitakere Ranges, Swanson, on pyrenomycete (?Chaetosphaeria), Samuels 81-81, Johnston & Horak, 7 May 1981 (PDD).