Microsomyces psammoechi Thaxt.

Santamaria, Sergi & Pedersen, Jan, 2021, Laboulbeniomycetes (Fungi, Ascomycota) of Denmark, European Journal of Taxonomy 781, pp. 1-425 : 82-84

publication ID

https://doi.org/ 10.5852/ejt.2021.781.1583

DOI

https://doi.org/10.5281/zenodo.5829080

persistent identifier

https://treatment.plazi.org/id/03D3878A-B700-FFB7-671D-7891DDCAFCE1

treatment provided by

Felipe

scientific name

Microsomyces psammoechi Thaxt.
status

 

Microsomyces psammoechi Thaxt. View in CoL

MB#275376

Fig. 16A–F View Fig

Memoirs of the American Academy of Arts and Sciences 16: 185 ( Thaxter 1931). –

Type: “ On the superior surface of the abdomen of Psammoechus orbicollis Gr. No. 2199, Type, Kamerun, West Africa ”; FH.

Diagnostic features

Lower receptacle consisting of a thick-walled basal cell. The corticating cells ( Fig. 16D View Fig , cc) bear one to several long-stalked perithecia. Primary appendage consisting of 1–2 elongated cells terminated by a spinose antheridium ( Fig. 16D View Fig , an, sx). [Detailed description: Majewski 1988]

Distribution and hosts

On Psammoechus Boudier, 1834 (Col. Silvanidae ). This is a rare species on a common host. Only known from Sumatra, Cameroon ( Thaxter 1931), Japan ( Majewski 1988), and recently found in Europe from Bulgaria ( Rossi et al. 2019a).

Collections examined from Denmark

On Psammoecus bipunctatus (Fabricius, 1792) (Col. Silvanidae )

DENMARK – Bornholm (B) • Svartingedalen ved Baggeå; 55°11.740′ N, 14 45.260′ E; VB81; 23 Jun. 2018; JP 1155; JP det.; ZMUC C-F-123679 , C-F-123680 GoogleMaps . – Nordøstsjaelland (NEZ) • Strødam ; 55°58.056′ N, 12°16.273′ E; UC20; 4 Oct. 2014; JP 33; JP det.; ZMUC C-F-122508 GoogleMaps . – Nordvestsjaelland (NWZ) • Sonnerup Skov ; 55°56.643′ N, 11°34.213′ E; PH60; 17 May 2019; JP 1466; JP det.; ZMUC C-F-124046 . – GoogleMaps Sydsjaelland (SZ) • Denderup Sø i Denderup Vaenge ; 55°15.075′ N, 11°57.366′ E; PG82; 9 Jun. 2019; JP 1476; JP det.; ZMUC C-F-124056 GoogleMaps Østerskov ved Langebaek ; 54°59.421′ N, 12°6.435′ E; UA19; 19 Aug. 2019; JP 1498; JP det.; ZMUC C-F-124085 GoogleMaps .

Remarks

First record from Denmark and second from Europe. Probably rare in Denmark and considering the large number of specimens of the widespread and very common host that were examined without finding any infections, it might even be very rare. This species, like its congener, should be considered a true parasite because of the highly developed and branched haustorium which deeply penetrates into the host body ( Fig. 16E–F View Fig , arrows).

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