• The Korean Journal of Mycology
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• v.23 no.1 s.72
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• pp.92-104
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• 1995

Ten species of Cordyceps species were collected throughout Kangwon province including Chuncheon Dongsanmyun KNU forest experiment from June to September, 1993. Collected Cordyceps species were identified as Cordyceps militaris, C. roseostromata, C. kyushuensis, C. scarabaeicola, Phytocordyceps ninchukiospora, C. nutans, Paecilomyces tenuipes, C. sphecocephala, Hymenostilbe odonatae, Torrubiella sp.. C. militaris, type species of Cordyceps species, was mainly formed on pupae of Lepidoptera and found after the rainy season around July. Fruiting body of C. roseostromata was morphologically similar to those of C. militaris, but relatively small in size and they were also found on lawn or pupa of Lepidoptera. Fruiting body of C. scarabaeicola was found on adult Scarabaeidae specifically and collect fruiting bodies of C. kyushuensis were on larva of moth. C. nutans and C. sphecocephala had host specificity on Hemiptera and Hymenoptera, respectively. Each species formed elliptical fertile part attach to the slim and carneous stalk and they were collected the most in specimen number through whole season of the summer. Ascospore of Phytocordyceps ninchukiospora on seed was characterized by two viable, multiseptate, fusiform units linked end-to-end by a long, filiform connective. Paecilomyces tenuipes, imperfect stage of the genus Cordyceps is multi-infective fungi that attack all stages of all groups of insects. Hymenostilbe odonatae attacks only adult Odonata and Torrubiella sp. formed on spider was difficult to collect because it was found the back side of leaf. As results of cultural test PDA medium showed the best mycelial growth. In the experiment of effect of the acidity inside of the media, C. militaris was good on pH 5, C. nutans and Phytocordyceps ninchukiospora were good on pH 6 and Paecilomyces tenuipes was on pH 7 and C. scarabaeicola was on pH 9. All isolates tested showed the best mycelial growth at $20^{\circ}C$. Morphologically similar isolates were used to analyze protein banding pattern among and within species. As a result, C. militaris, C. roseostromata and C. kyushuensis were clustered into close species and C. scarabaeicola and Phytocordyceps ninchukiospora were relatively distant from those species.

• The Korean Journal of Mycology
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• v.25 no.4 s.83
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• pp.239-252
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• 1997

Thirty three entomopathogenic species belonging to twelve genus were collected throughout 16 collecting sites from 1990 to 1996. Among those collected species, 14 unrecorded species such as Cordyceps bifusispora, C. martialis, C. oxycephala, C. paludosa, C. pentatomi, C. rosea, C. ryogamiensis, Shimizuomyces paradoxa, Akanthomyces aculeatus, Polycephalomyces ramosus, Tilachlidiopsis nigra were added to Korean entomopathogenic species through this study. In nature, occurrence of Cordyceps nutans, C. sphecocephala and Paecilomyces tenuipes were from early June to late September. On the other hand, C. militaris, C. kyushuensis and C. pruinosa were mainly found from mid July to mid August when relative humidity are increased. Nine species of the genus Cordyceps including C. bifusispora and four deuteromycetous species were isolated. As a result of cultural test using six Cordyceps species, anamorph of C. militaris, C. kyushuensis were proved as Verticillium sp. C. pruinosa as Acremonium sp., C. sphecocephala as Hymenostilbe sp. and C. scarabaeicola as Beauveria sp., respectively.