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Formation of long‐lasting galls by overwintered nymphs in the J apanese aphid Q uadrartus yoshinomiyai ( H emiptera: A phididae: H ormaphidinae)
Author(s) -
Uematsu Keigo,
Shibao Harunobu
Publication year - 2014
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.12029
Subject(s) - nymph , aphid , biology , instar , botany , shoot , horticulture , maturity (psychological) , host (biology) , ecology , larva , psychology , developmental psychology
Abstract This paper examines the life history of a generation of galls created by the aphid Q uadrartus yoshinomiyai ( H ormaphidinae: N ipponaphidini) on its primary host plant, D istylium racemosum . First‐instar fundatrix nymphs of Q . yoshinomiyai initiated galls on stems of developing shoots in early A pril and incipient enclosed galls were found from later the same month. The galls lasted for up to 14 months, during which they grew to maturity, opened in early or mid‐ A pril of the following year and dried up by the end of J une. First‐instar fundatrix nymphs were found on winter buds, indicating that they hatched from eggs in autumn and overwintered as nymphs. These results suggest that Q . yoshinomiyai has a three‐year life cycle.