Metacordyceps atrovirens (Kobayasi & Shimizu 1978) Kepler, G-.H. Sung & Spatafora 2012

Taxonomy
Authority: 
(Kobayasi & Shimizu 1978) Kepler, G-.H. Sung & Spatafora
Citation: 
Mycologia, 104: 185. 2012
Synonymy: 
Cordyceps atrovirens. Bull. Natn. Sci. Mus. Tokyo, Ser. B, 4: 52. 1978.
Classification: 
Metacordyceps, Clavicipitaceae, Hypocreales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Type Specimen: 
TNS-F 230338
Type Locality: 
Tsugawa, Yamagata Prefecture, Japan
Morphology
Stroma: 

Mycelia covering the host, pallid yellow to yellow-green; Stromata cylindrical to clavate 2-5 cm long, emerging from the head or rarely the abdomen of the host, solitary or infrequently compound, fleshy; Stipes cylindrical or swollen at base, 1-4 cm long, 2-4 mm wide, tapering to compressed, hairless, sometimes with longitudinal creases, dark green to pallid colored; fertile part ovoid to attenuate-cylindrical, tip obtuse, 6-16 X 2.5-4.5 mm, dark green

 
Perithecia: 

Perithecia immeresed, oblique in orientation, ovoid 475-550 X 240-250 µ, tip elongate, ostiole protruding form surface.

Asci: 

210-250 µ long, cap 3.5 µ in diameter.

 
Ascospores: 

Ascospores needle shaped, both ends tapering to points (fusiform), forming septations but remaining whole at maturity, 50-52 X 2.5-3 µ, 8-10 septations per ascospore, often producing ovoid septations from septations.

 
Ecology
Host or Substrate: 

larva of Coleoptera

References
Page Author: 
Joey Spatafora, Ryan Kepler