Troglomyces S.Colla, 1932

Santamaría, Sergi, Enghoff, Henrik & Reboleira, Ana Sofía P. S., 2018, New species of Troglomyces and Diplopodomyces (Laboulbeniales, Ascomycota) from millipedes (Diplopoda), European Journal of Taxonomy 429, pp. 1-20 : 10-11

Genus Troglomyces S.Colla

Nuovo Giornale Botanico Italiano 39: 450 ( Colla 1932). ‒ Type species: T. manfrediae S.Colla

Brief description

Receptacle three-celled, with superposed cells I, II and III. Cells II and III narrow and adnate to the perithecium. Perithecium with five, rarely six, outer wall cells in each vertical row. Perithecial apex bearing four conspicuous lobes. The original description was emended by Enghoff & Santamaría (2015). Eight species.

Identification key to the Troglomyces species

1. Dioecious; male thalli consisting of 6 superposed cells, the uppermost being the antheridium; on Nepalmatoiulus Mauriès, 1983 (Julida) ................ T. dioicus Santam., Enghoff & Reboleira sp. nov.

− Monoecious; antheridia on primary appendage of female thalli ...................................................... 2

2. Lower cell of primary appendage bearing one to several antheridia ................................................ 3

− Lower cell of primary appendage without antheridia, which are always located on cells above...... 5

3. Only one antheridium ....................................................................................................................... 4

− Antheridia 4 to 6 arranged in one or two groups; on Leptoiulus Verhoeff, 1894 (Julida) ....................................................................... T. botryandrus Santam., Enghoff & Reboleira

4. Appendage bifurcate above the second cell by means of an oblique septum; on Ophyiulus Berlese, 1884 (Julida) ......................................................................... T. rossii Santam., Enghoff & Reboleira

− Appendage unbranched (if branched not as above); on other genera of Julida .................................. .......................................................................................................................... T. manfrediae S.Colla

5 Three antheridia on the third, fourth and fifth cell of appendage; on Archiboreoiulus Brolemann, 1921 (Julida) .................................................................................... T. triandrus Santam. & Enghoff

− Second cell of appendage functioning as or bearing an antheridium ............................................... 6

6. Perithecial tip with two or four apical cells protruding like ligulae ................................................. 7

− Perithecial tip without protruding cells; on Iberoiulus Mauriès, 1985 (Julida) ................................... ............................................... .............................................................. T. pusillus Santam. & Enghoff

7. Perithecial tip with two protruding apical cells; on Acipes (Blaniulidae) .......................................... .................................................................................................... T. bilabiatus Santam. & Enghoff

− Perithecial tip with four protruding apical cells; on Caucaseuma Strasser, 1970 and Heterocaucaseuma Antić & Makarov, 2016 (Chordeumatida) .... T. tetralabiatus Santam., Enghoff & Reboleira sp. nov.