Arthrorhynchus Kolen.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 216-217

Genus Arthrorhynchus Kolen.

MB#337

Wiener Entomologische Monatsschrift 1: 67 ( Kolenati 1857). –

Type species: A. diesingii Kolen.

Helminthophana Peyr., Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Wien. Mathematisch-naturwissenschaftliche Classe. Abteilung 1 68: 250 ( Peyritsch 1873) [MB#2262]

Brief description

Monoecious. Receptacle three-celled. Cell I extending within the host body into a conspicuous non-septate haustorium. Blackened foot absent. Primary appendage free, consisting of several superposed cells. Each of these cells, except the lowermost basal, give rise to four or more antheridia arranged in whorls. The terminal antheridium bears a dorsal spinous process (the original spore apex, sx). Perithecium with 5–6 cells in each vertical row of outer wall cells; the perithecial tip showing four terminal lobes surrounding the ostiole.

Remarks

This genus consists of 3–6 species depending on the authors ( Majewski 1994b). We count six species if A. eucampsipodae Thaxt. is separated from A. diesingii Kolenati (Haelewaters et al. 2020) .