• The Korean Journal of Mycology
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• v.26 no.4 s.87
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• pp.413-415
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• 1998

An entomophthoraceous fungus, Zoophthora phalloides, was found in populations of the aphid Dactynotus species, at National Institute of Agricultural Science and Technology, and Jeonnam Provincial RDA during June, 1998. Occurrence of the fungus and aphid has never been recorded in Korea. Microscopic observations of this fungus are described, and illustrated. The fungus has sausage-shaped primary conidia with $28.98\;{\mu}m$ in length, and two types of secondary conidiophores. Our specimens exhibit closer relationship with the North American isolates than with the European isolates on the basis of conidial length described by other study.

• The Korean Journal of Mycology
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• v.27 no.1 s.88
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• pp.63-65
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• 1999

Conidiobolus obscurus and C. thromboides (Zygomycetes: Entomophthorales), aphid-attacking fungi, were found on the Dactynotus species (Homoptera: Aphididae) in June 1998 for the first time in Korea. They produce globose primary conidia typical to the genus Conidiobolus but their dimensions are clearly distinguished. Conidiobolus thromboides produces rhizoids and conidiophores with cylindrical constriction at their apices but C. obscurus does not form rhizoids or constricted conidiophores. Resting spores were not found in our specimens of both species, but their vegetative structures observed readily allowed identification.

• The Korean Journal of Mycology
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• v.27 no.1 s.88
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• pp.66-67
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• 1999

Neozygites fresenii (Zygomycetes: Entomophthorales), aphid-attacking fungus, was found in June 1998 for the first time in Korea. The fungus produces the globose primary conidia with a truncate papillar and two types of the secondary conidiophores and conidia. Resting spores were not found in our specimens, but the fungal structures observed clearly distinguish the fungus from other aphid-attacking fungi, allowing inclusion in the species N. fresenii.

• The Korean Journal of Mycology
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• v.26 no.3 s.86
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• pp.407-410
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• 1998

The aphid-attacking fungus Pandora neoaphidis was collected during May and June, 1998 at various localities: two localities at Kyunggi, three at Kangwon, one at Kyungbuk and one at Chungnam Provinces. Occurrence of this fungus has never been recorded in Korea. The potential host aphids are Acyrthosiphon kondoi, Myzus persicae, Lipaphis erysimi, Sitobion avenae, Aphis rumicis, Dactynotus species and unknown species. Microscopic characters of the fungus are described and illustrated. Pandora neoaphidis studied in this study has an extremely broad range in conidial size and shape even within a single specimen. Such variable size and shape are typical characters of the fungus. During microscopic examination of specimens, the resting-spore phase was not observed.