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The aphid C eratovacuna nekoashi ( H emiptera: A phididae: H ormaphidinae) and its allied species in K orea, J apan and T aiwan
Author(s) -
Aoki Shigeyuki,
Kurosu Utako,
Kutsukake Mayako,
Hsieh TsungJui,
Yang ManMiao,
Choe Jae C.,
Fukatsu Takema
Publication year - 2013
Publication title -
entomological science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.536
H-Index - 28
eISSN - 1479-8298
pISSN - 1343-8786
DOI - 10.1111/ens.12002
Subject(s) - aphid , biology , botany , host (biology) , ecology
The aphid C eratovacuna nekoashi and its allied species have been a taxonomically difficult group. They form peculiar “cat's‐paw” galls (called “ N ekoashi” in J apanese) on S tyrax trees and also use M icrostegium grasses as their secondary hosts. Through sampling aphids from both S tyrax galls and M icrostegium grasses in S outh K orea, J apan and T aiwan, and sequencing their DNA , we made it clear that four distinct species occur in these regions: C . nekoashi ( S asaki), C . oplismeni ( T akahashi), C . orientalis ( T akahashi) and C . subtropicana sp. nov. In K orea, C . nekoashi forms galls on both S . japonicus and S . obassia , whereas in J apan the species forms galls on the former but not on the latter; our molecular analyses unequivocally indicated the occurrence of a single species in S outh K orea and mainland J apan. Aphids of the four species on the secondary host were morphologically discriminated from one another. The identity of the primary‐ and secondary‐host generations was also clarified for each species. All four species were found to produce second‐instar sterile soldiers in their S tyrax galls, and first‐instar soldiers were found in colonies of C . subtropicana on the secondary host.

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