Gyrophaena joyioides Wusthoff, 1937

Material. Kharkiv region: environs of Haidary, moist ravine forest, on old carpophores of Fistulina hepatica, 29. V.1992, 30 spec. ; ditto, moist ravine forest, on mature carpophores of Trametes versicolor, 29. V.1992, 1 spec. ; ditto, moist ravine forest, at the trunk of a fallen linden on mature carpophores of Agaricus chioneus, 29. V.1992, 5 spec. ; ditto, moist ravine forest, on carpophores of Stereum hirsutum, 31. V.1992, 13 spec. ; ditto, fallen tree, on carpophores of Stereum hirsutum, 1. VI.1992, 7 spec. ; ditto, on old carpophores of Kuehneromyces mutabilis, 2. VI.1992, 2 spec. ; ditto, on old carpophores of Mycena sp., 2. VI.1992, 50 spec. ; ditto, on mature carpophores of Coprinus sp., 9. VI.1992, 9 spec. ; ditto, on mature and old carpophores of Pluteus cervinus, 9. VI.1992, 259 spec. ; ditto, on carpophores of Tricholoma populinum, 11. VI.1992, 3 spec. ; ditto, on old carpophores of Tricholoma populinum, 13. VI.1992, 30 spec. ; ditto, on a fallen tree, on carpophores of Crepidotus applanatus, 13. VI.1992, 23 spec. ; ditto, on fallen trees, on carpophores of Pluteus cervinus, 4.VII.1992, 68 spec. ; ditto, on old carpophores of Pluteus cervinus, 17.VII.1992, 500 spec. ; ditto, on carpophores of Kuehneromyces mutabilis, 17.VII.1992, 100 spec. ; ditto, highland oak forest, on carpophores of Crepidotus applanatus, 24.VII.1992, 70 spec. ; ditto, on carpophores of Psatyrella spadicea­grisea, 27.VII.1992, 17 spec. ; ditto, on carpophores of Megacollybia platyphylla, 27.VII.1992, 5 spec. ; ditto, highland oak forest, on old carpophores of Tricholoma terreum, 1.VIII.1992, 30 spec. ; ditto, on old carpophores of Pluteus cervinus, 1.VIII.1992, 100 spec. ; ditto, dry ravine forest, on carpophores of Russula virescens, 8.VIII.1992, 9 spec. ; ditto, on sporophores of Fuligo septica, 8.VIII.1992, 1 spec. ; ditto, on carpophores of Amanita phalloides, 8.VIII.1992, 7 spec. ; ditto, on old carpophores of Artomyces pyxidatus, 8.VIII.1992, 2 spec. ; ditto, highland oak forest, on old carpophores of Suillellus luridus, 9.VIII.1992, 1 spec. ; ditto, moist ravine forest, on carpophores of Kuehneromyces mutabilis, 10.VIII.1992, 2 spec. ; ditto, highland oak forest, in carpophores of Amanita phalloides, 22.VIII.1992, 6 spec. ; ditto, moist ravine forest, on carpophores of Pluteus cervinus, 04.IX.1992, 4 spec. ; environs of Zadonetske, artificial pine forest, on carpophores of Macrolepiota procera, 28.VII.1992, 39 spec. (Supplement, Tab. 1).

Bionomics. Obligate mycetobiont, it occurs in carpophores of fungi, often in large clusters. Larvae and imagos feed on mature fungal spores.

Distribution. Europe, Caucasus, Asia Minor, Western Siberia (Schülke & Smetana 2015).