Good evening

These small, amphora-shaped perithecia were growing on cattle dung, alongside Lasiobolus diversisporus, Coprotus leucopocillum, and Saccobolus beckii.

The neck has a collar of short, septate, brown, thick-walled, pointed hairs. The ostiole is very distinctive and perfectly delimited.

Spores are ellipsoidal, hyaline when immature, later greenish, and finally almost black, without a germ line. At one end, a caudal appendage, approximately half the length of the spore, is clearly visible; on some spores, another, apparently much longer, wider, and more diffuse appendage is discernible at the opposite end. The spores measure (without caudal appendages): (23.7) 25.7–29.5 (30.5) × (11.9) 13.4–15.5 (16.7) µm; Q = (1.7) 1.8–2.1 (2.2); N = 89; Me = 27.5 × 14.4 µm; Qe = 1.9.

Asci are octosporic, biseriate, inamyloid, and lack an apical globule.

The keys lead me to several genera such as Cercophora, Podospora, Arnium, Zopfiella, etc., but I cannot find any species that fits.

https://www.dropbox.com/scl/fo/7c5hubqtpe8sitydxb86o/AHkKz0QuDdJR-D20aoa_flM?rlkey=qiqg49xudgwsjp0pkbzsey1g3&st=jx4c5c7x&dl=0

Thank you in advance.

Miguel Ángel Ribes