Dimeromyces muticus Paoli

Rossi, Walter & Leonardi, Marco, 2018, New species and new records of Laboulbeniales (Ascomycota) from Sierra Leone, Phytotaxa 358 (2), pp. 91-116 : 104

Dimeromyces muticus Paoli , Redia 7: 293, 1911 ( Figure 3g )

Known distribution. Described on the mite Coleopterophagus neglectus Berlese ( Canestriniidae ) associated with Augosoma centaurus (Fabricius) ( Coleoptera , Scarabaeidae , Dynastinae) from “Africa”, it was later reported from the Democratic Republic of the Congo on various mites of the family Canestriniidae (genera Cetonicola and Paraphagella ) associated with Scarabaeidae Cetoninae ( Cooreman 1955).

New record from Sierra Leone. Southern Province, Gola Rainforest National Park, Nemahugoima village, 03.II.2012, C. Belcastro & W. Rossi , on several specimens of an undescribed species of Cetonicola found under the elytra of a male and a female of Cyprolais aurata (Westwood) ( Scarabaeidae , Cetoninae) collected by means of a light trap.

Remarks. Although reported only once during the more than one hundred years passed after its description, Dimeromyces muticus was quite frequent on the numerous mites found under the elytra of the “flower beetle” C. aurata .

Dimorphomyces decipiens (Thaxt.) Thaxter, Memoirs of the American Academy of Arts and Sciences 14: 325, 1924 ( Figures 4a and 4b )

Known distribution. Described (as Dimeromyces decipiens ) on Eleusis sp. ( Coleoptera , Staphylinidae ) from Cameroon and never reported since.

New record from Sierra Leone. Eastern Province, Gola Rainforest National Park, near Lalehun, 20–23.XI.2015, W. Rossi , near the apex of the abdomen of Eleusis sp.

Remarks. First record of this fungus after its description.

Figures

FIGURE 3. a: Laboulbenia insolita. b: upper portion of the perithecium of L. insolita. c: Laboulbenia kingsleyae from the type slide. d: Rhachomyces carbonii. e: Amphimyces cerylonis. f: Corethromyces rostellatus. g: Dimeromyces muticus. Scale bars: a, c, d, e, f, g = 50 μm; b = 25 μm.

FIGURE 4. a: male thallus of Dimorphomyces decipiens. b: female thallus of D. decipiens with focus on the receptacle. c: Kainomyces alutellae with hyaline receptacle. d: K. alutellae with partially blackened receptacle. e: mature thallus of Laboulbenia camerunensis. f: immature thallus of L. camerunensis. g: Laboulbenia imitans. Scale bars: a = 25 μm; b, c, d, e, f, g = 50 μm.