Ophiocordyceps oxycephala

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Ophiocordyceps oxycephala
Fruiting bodies of Ophiocordyceps oxycephala on the carcass of a species of wasps in Japan.

Fruiting bodies of Ophiocordyceps oxycephala on the carcass of a species of wasps in Japan.

Systematics
Class : Sordariomycetes
Subclass : Hypocreomycetidae
Order : Crust ball mushrooms (Hypocreales)
Family : Ophiocordycipitaceae
Genre : Ophiocordyceps
Type : Ophiocordyceps oxycephala
Scientific name
Ophiocordyceps oxycephala
( Penz. & Sacc. ) GH Sung , JM Sung , Hywel-Jones & Spatafora

Ophiocordyceps oxycephala is a parasitic fungus that grows on wasps.

features

Macroscopic features

The simply constructed stroma arises directly from the dead wasp body. It is 5 to 8 inches long and very narrow with 0.4 millimeters in cross section. It is sinuous and greyish-orange in color, smooth, light and tiny elongated grooves. The head is approximately walnut, orange, lighter to white in the middle, 3 to 10 millimeters long and 1 to 1.5 millimeters in cross-section. It is irregular and slightly furrowed with a short, pointed sterile apex.

Microscopic features

The actual fruiting bodies, the perithecia, are embedded obliquely in the stroma. They are conical and papillary , are 450–500 × 192–210 micrometers in size. The tubes (asci) are long cylindrical and are 420–473 × 192–210 micrometers in size with a large spherical crown at the apex . In the tubes there are usually four, sometimes eight thread-like spores close together. The ascus walls usually break open from the base when ripe, then tear upwards, releasing the spores. The spores of the four-pore tubes are 7-8.8 (sometimes up to 12m, 3) × 1-1.8 micrometers in size, the spores of the eight-pore tubes are smaller, namely 6-7 × 0.8-1 micrometers in size.

Ecology and diffusion

Ophiocordyceps oxycephala grows on different species of wasps in deciduous forests . Vespa velutina is called the host . But the bumblebee Bombus equestris , a representative of the real bees , has also been identified as the host. The species is known from the Chinese provinces of Guangdong , Hainan and Guangxi . Asia and South America are more coarse.

Systematics

Ophiocordyceps oxycephala , like all core clubs , has long been placed in the genus Cordyceps within the Clavicipitaceae . It was first described in 1897 by Otto Penzig and Pier Andrea Saccardo. In 2007, the core clubs were divided into three genera in two different families by Sung Gi-ho , Sung Jae-mo , Nigel L. Hywel-Jones and Joseph W. Spatafora . Ophiocordyceps oxycephala is part of the Ophiocordycipitaceae.

swell

Individual evidence

  1. ↑ a b c d Zhishu Bi, Guoyang Zheng, Li Taihui: The Macrofungus Flora of China's Guangdong Province . Chinese University Press, 1993, ISBN 978-962-201-556-2 , pp. 734 ( limited preview in Google Book search).
  2. ↑ Ophiocordyceps oxycephala (Penz. & Sacc.) GH Sung, JM Sung, Hywel-Jones & Spatafora. (No longer available online.) Archived from the original on December 1, 2017 ; accessed on November 19, 2017 (English). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.  @1@ 2Template: Webachiv / IABot / cordyceps.us
  3. ↑ Shrestha B., Tanaka E., Hyun MW., Han JG., Kim CS., Jo JW., Han SK., Oh J., Sung JM., Sung GH .: Mycosphere Essay 19. Cordyceps species parasitizing hymenopteran and hemipteran insects . In: Mycosphere . tape 8 , no. 9 , October 2017, p. 1424-1442 , doi : 10.5943 / mycosphere / 8/9/8 ( mycosphere.org [PDF]).
  4. ↑ GH Sung, NL Hywel-Jones, JM Sung, JJ Luangsa-Ard, B. Shrestha et al: Phylogenetic classification of Cordyceps and the clavicipitaceous fungi. In: Studies in Mycology. 57, 2007, pp. 5-59. doi: 10.3114 / sim.2007.57.01 .
  5. ↑ Mycobank: Ophiocordyceps oxycephala . Retrieved November 19, 2017 .

Web links

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