Herpetogramma okamotoi is a species of moth in the family Crambidae. It was described by Hiroshi Yamanaka in 1976. It is found on the Japanese islands of Honshu and Shikoku.An Identification Guide of Japanese Moths Compiled by Everyone
The larvae feed on the leaves Pteris multifida and Microlepia strigosa.Tachikawa, T. (1987). "Occurrence of Herpetogramma okamotoi Yamanaka in Shikoku (Lepidoptera: Pyralidae)". Transactions of the Shikoku Entomological Society. 183-4: 303-304.
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