Pemphigus obesinymphae

{{Short description|Species of aphid}}

{{Speciesbox

| parent = Pemphigus

| taxon = Pemphigus obesinymphae

| authority = Aoki & Moran, 1994

}}

Pemphigus obesinymphae is a species of gall-forming aphid. It creates galls on the leaves of Populus fremontii. {{cite journal | last1=Aoki | first1=Shigeyuki | last2=Moran | first2=Nancy A. | title=Pemphigus Obesinymphae, a New American Aphid Species with Defenders and Swollen Nymphs (Homoptera: Aphidoidea: Pemphigidae) | journal=Journal of the New York Entomological Society | publisher=New York Entomological Society | volume=102 | issue=2 | year=1994| jstor=25010079 | pages=251–260 | url=http://www.jstor.org/stable/25010079 | access-date=2022-07-07}} The species is the only North American aphid known to have soldiers, first instar nymphs that defend the colony. {{cite journal | last1=Abbot | first1=Patrick | last2=Withgott | first2=James H. | last3=Moran | first3=Nancy A. | title=From the Cover: Genetic conflict and conditional altruism in social aphid colonies | journal=Proceedings of the National Academy of Sciences of the United States of America | volume=98 | issue=21 | date=2001-10-10 | pages=12068–12071 | pmid=11562469 | doi=10.1073/pnas.201212698 | pmc=59768 | bibcode=2001PNAS...9812068A | doi-access=free }}