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Ophiocordyceps yakushimensis (Kobayasi) G.H. Sung, J.M. Sung, Hywel-Jones & Spatafora

Taxonomy
Authority: 
(Kobayasi) G.H. Sung, J.M. Sung, Hywel-Jones & Spatafora
Citation: 
Studies in Mycology 57: 47.
Classification: 
Ophiocordyceps, Ophiocordycipitaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Type Locality: 
Forest along Suzu River, Onoaida, Yakushima Island, Japan.
Morphology
Stroma: 

Stromata very long, up to 140 mm, arising from head of cicada nymph.  Stipe simple or dichotomously branched, cylindrical, sometimes irregularly contorted, 80-110 mm in height, 1.5-2 mm thick, glabrous, pale brown to buff.  Fertile area subulate to cylindrical, distinct from stipe, 15-28 x 2.8-3.5 mm, sometimes with short, aperithecial tip, olivaceous to clay colored, minutely punctate.

 
Perithecia: 

Perithecia completely immersed, narrowly ovoid, 740-800 x 170-230 um, almost lacking a "neck" region, ostioles not at all protruding, ordinally arranged.

Asci: 

Asci cylindrical, 270-310 x 5 um.

Ascospores: 

Ascospores disarticulating into part spores which are long and cylindrical, 10-15 x 1 um,  somewhat attenuated on both sides with truncated ends. 

Ecology
Host or Substrate: 

On nymph of cicada (Hemiptera).  Reported on Meimuna tsuchidai

Known Distribution: 
China, Japan
Page Author: 
Alisha Owensby, Giho Sung