Teratomyces philonthi Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 81-82

Teratomyces philonthi Thaxt.

MB#140683

Fig. 15C

Proceedings of the American Academy of Arts and Sciences 35: 432 ( Thaxter 1900, as T. philonothi ). –

Type: “On Philonthus sp. indet., British Museum, No. 365, Hungary ”; FH.

Diagnostic features

Cell IIa entirely blackened, cell IIb ± darkened, at least in the lower region ( Fig. 15C , IIa, IIb). Pointed branchlets on secondary appendages strongly arcuate to coiled ( Fig. 15C , arrows). Perithecium with w 1 and w 3 tiers tinged with brown contrasting with paler w 2 and w 4 tiers, showing elevations in outline where septa separate the wall cell tiers ( Fig. 15C, w 1–4 ). [Detailed descriptions: Thaxter 1896; Santamaria 1989; Majewski 1994b]

Distribution and hosts

This species has been reported from Europe: Finland, France, Germany, the Netherlands, Hungary, Italy, Poland, Spain ( Santamaria et al. 1991). It has been reported later also from Belgium ( De Kesel & Rammeloo 1992), United Kingdom ( Weir 1994), and Austria ( Rossi & Christian 2020). The epithet of this species is misleading because the hosts actually belong to the genus Gabrius (Col. Staphylinidae Staphylininae ). Also recorded in Africa on the related genus Gabronthus Tottenham, 1955 from Zaire ( Rossi & Santamaria 1992). De Kesel et al. (2020) reported this species also on Quedius , which however is the host genus of Symplectromyces (see above).

Collections examined from Denmark

On Gabrius breviventer (Sperk, 1835) (Col. Staphylinidae Staphylininae )

DENMARK – Lolland, Falster, Møn (LFM) • Røgbølle Sø ved Sørup ; 54°42.608′ N, 11°34.757′ E; PF66; 15 Oct. 2019; JP 1524; JP det.; ZMUC C-F-124279 • Vest for Bandholm ; 54°50.303′ N, 11°28.050′ E; PF57; 3 Jan. 2019; JP 1336; JP det.; ZMUC C-F-123875 . – Sydsjaelland (SZ) • Holtug Kalkbrud ; 55°20.470′ N, 12°26.678′ E; UB33; 21 Sep. 2013; JP 350; JP det.; ZMUC C-F-122832 .

Remarks

First record from Denmark. Distinguishing this species from T. actobii may be difficult depending on the collections, as was pointed out by Rossi et al. (2019a). Perhaps this is why De Kesel et al. (2020), according to their drawings, seemed to have confused the two species.

Figures

Fig. 15. Teratomyces spp. A–B. T. actobii Thaxt. Immature and mature thalli showing variability in receptacle pigmentation. –C. T. philonthi Thaxt. Mature thallus with labelled wall cell tiers (w 1–4), pointed and arcuate secondary appendages (arrows), and cells IIa–b of receptacle. Scale bars: 50 µm. Photographs from slides ZMUC C-F-122481 (A), ZMUC C-F-123544 (B), ZMUC C-F-122832 (C).

Fig. 1. Herpomyces spp. A. H. ectobiae Thaxt.; mature thallus. – B. H. periplanetae Thaxt.; mature thallus showing the distal acute tooth-like outgrowth on the perithecium (arrow), and shield (sh). – C. H. stylopygae Speg.; mature thallus showing the distal acute tooth-like outgrowth on the perithecium (arrow), and shield (sh). Scale bars: A = 50 µm; B–C = 100 µm. Photographs from slides ZMUC C-F- 124041 (A), ZMUC C-F-123751 (B), and ZMUC C-F-124039 (C).

Fig. 2. A–C. Helodiomyces elegans F.Picard. A. Mature thallus with labelling of cells VI, VI’ and VII. B–C. Details of perithecium, including ligules (li) in C. – D. Autoicomyces aquatilis (F.Picard) I.I.Tav.; mature thallus showing the perithecial outgrowth (arrow). – E. Autoicomyces humilis (Thaxt.) Thaxt.; mature thallus at the base of a host claw, and a sporeling on the right. – F–H. Ceratomyces pyrenaeus Santam.; mature thalli showing labelled perithecial excrescences (arrows in G). Scale bars: 50 µm. Photographs from slides ZMUC C-F-122583 (A–C), ZMUC C-F-122567 (D), ZMUC C-F-122566 (E), ZMUC C-F-123551 (F), and ZMUC C-F-123550 (G–H).

Fig. 3. A. Eusynaptomyces enochri Scheloske; reduced form showing the lateral outgrowth (arrow). – B–D. Eusynaptomyces hydrobii (T.Majewski) I.I.Tav.; mature thalli. – E. Rhynchophoromyces anacaenae Scheloske; mature thallus with broken appendage. –F. Thripomyces italicus Speg.; mature thallus showing the characteristic broadened cells at the base of the receptacle (*). Scale bars: 50 µm. Photographs from slides ZMUC C-F-122569 (A), ZMUC C-F-123552 (B–D), ZMUC C-F-123749 (E), and ZMUC C-F- 122983 (F).

Fig. 4. A–D. Euzodiomyces lathrobii Thaxt. A–B. Reduced forms. C. Typical form. D. Labelling of a secondary axis, with antheridia (an) and perithecial initial with cell VII. – E. Zodiomyces vorticellarius Thaxt.; with labelled cell I and buffer projections (bf). – F. Coreomyces arcuatus Thaxt.; mature thallus. – G. Coreomyces corixae Thaxt.; mature thallus showing the appendiculate cells (ac). – H. Coreomyces macropus Thaxt.; mature thallus. Scale bars: A–C, E–H = 50 µm; D = 25 µm. Photographs from slides ZMUC C-F-123138 (A–B), ZMUC C-F-124066 (C), ZMUC C-F-122479 (D), ZMUC C-F-122570 (E), ZMUC C-F-124285 (F), ZMUC C-F-123723 (G), and ZMUC C-F-123722 (H).