Hydraeomyces halipli (Thaxt.) Thaxt.

MB#148360

Fig. 21F–G

Memoirs of the American Academy of Arts and Sciences 12: 293 (Thaxter 1896). – Basionym: Heimatomyces halipli Thaxt., Proceedings of the American Academy of Arts and Sciences 29: 32 (Thaxter 1893) [MB#462738]. –

Type: [Not designated] [Ind. loc.] “ On Haliplus ruficollis and Cnemidotus muticus, Connecticut ”; FH. [USA] [According to Tavares 1985, the type are the fungi from H. ruficollis]

Hydraeomyces cnemidoti Thaxt. (Thaxter 1908: 267) [Not registered in MycoBank]

Hydraeomyces venetus Speg. (Spegazzini 1915b: 52) [MB#187540]

Parahydraeomyces italicus Speg. (Spegazzini 1915b: 70) [MB#146173]

Diagnostic features

See genus description. [Detailed descriptions: Sugiyama 1973; Sugiyama & Hayama 1981; Weir 1994; Majewski 1994b; Santamaria 2003; De Kesel & Werbrouck 2008]

Distribution and hosts

On species of the aquatic beetles belonging to the genera Haliplus and Peltodytes (= Cnemidotus Illiger, 1802) (Col. Haliplidae). This fungus is widely distributed in Europe: Croatia, Czech Republic, Finland, France, Germany, Italy, Poland, Russia, Spain, United Kingdom (Majewski 2008), Hungary (Bánhegyi 1950), Belgium (De Kesel & Werbrouck 2008), Sweden (Huggert 2010), Bulgaria (Rossi et al. 2019a), Slovenia (Rossi & Christian 2020), and the Netherlands (Haelewaters & De Kesel 2020); Africa: Tunisia and Morocco (Maire 1916a); America: USA (Thaxter 1892), and Argentina (Spegazzini 1917); Asia: China (Thaxter 1924), Japan (Sugiyama 1973), and Taiwan (Sugiyama & Hayama 1981).

Collections examined from Denmark

On Haliplus apicalis Thomson, 1868 (Col. Haliplidae)

DENMARK – Lolland, Falster, Møn (LFM) • Ulvshale; 55°3.218′ N, 12°15.801′ E; UB20; 10 Jun. 2017; JP 427; JP det.; ZMUC C-F-122912 .

On Haliplus immaculatus Gerhardt, 1877 (Col. Haliplidae)

DENMARK – Nordøstsjaelland (NEZ) • Nordhavnstippen på Københavns Nordhavn; 55°43.091′ N, 12°37.088′ E; UB57; 29 Apr. 2018; JP 1094; JP det.; ZMUC C-F-123611 .

On Haliplus ruficollis (Degeer, 1774) (Col. Haliplidae)

DENMARK – Lolland, Falster, Møn (LFM) • Busemarke Mose; 54°57.688′ N, 12°26.619′ E; UA39; 19 Aug. 2019; JP 1495; JP det.; ZMUC C-F-124081 • Ulvshale; 55°2.729′ N, 12°16.354′ E; UB20; 2 May 2018; JP 1101; JP det.; ZMUC C-F-123619 . – Nordøstsjaelland (NEZ) • Heatherhill; 56°5.240′ N, 12°8.611′ E; UC21; 22 May 2016; JP 93; JP det.; ZMUC C-F-122568 .

Remarks

First record from Denmark. The presence of this species in Denmark is not surprising according to its cosmopolitan distribution.