Ophiocordyceps longissima (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: 44.
Classification: 
Ophiocordyceps, Ophiocordycipitaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Type Specimen: 
TNS F-230285 and TNS F-23029 (clarification needed)
Type Locality: 
Japan
Morphology
Stroma: 

Stromata solitary, long, simple or rarely bifurcating at tips, arising from head of cicada nymph.  Fertile area clavate to cylindrical, orange-brown to cinnamon colored, 30-40 mm long, 5-6 mm thick, smoothly continued from stalk, minutely punctate with dark ostiola.  Stipe long and slender, leather-like, often irregularly twisted or curved, glabrous or slightly pubescent, pale brown to yellow-brown, 100-130 x 1.5-2 mm. 

 
Perithecia: 

Perithecia crowded, immersed, ovoid without a neck, 600-650 x 280-310 um.

 
Asci: 

Asci cylindrical, 5-6 um in diameter, possessing a prominent cap (4 um wide).

 
Ascospores: 

Ascospores cylindrical, disarticulating into partspores.  Partspores obtuse at both ends, 9-11 x 1-1.2 um.

Ecology
Host or Substrate: 

on nymph of cicada (Heteroptera)

Known Distribution: 
China, Japan, Korea
Notes
Commentary: 

The total length of the below ground stromatic tissue from unpublished and anecdotal observations exceeds that of published measurements (upto 600 mm).

References
Page Author: 
Alisha Owensby