Lichenicolous fungus growing on Ochrolechia parella. Ochrolechia parella is a very common lichen here. In the past I found several lichenicolous fungi living on it, but I didn't succeeded to identify one with confidence. Some of them were very similar to the present one, particularly those in Observation 241307 and Observation 238445. Looking for information about lichenicolous fungi on Ochrolechia I found Ref. 1, that has a key to the species in the genus that I found to be probable for this fungus: Sphaerellothecium -, after a search at http://www.lichenicolous.net/ The species S. araneosum results from the key, after the following steps: