Neuroterus fragilis

{{Short description|Species of wasp}}

{{Speciesbox

| image = N fragilis adult.jpg

| image_caption = Adult male Neuroterus fragilis

| genus = Neuroterus

| species = fragilis

| authority = Bassett, 1900

}}

Neuroterus fragilis, also known as the succulent gall wasp, is a species of oak gall wasp. It induces galls in oak trees in California, including leather oak, California scrub oak, blue oak, and valley oak.{{Cite book |last=Russo |first=Ronald A. |url=https://www.worldcat.org/oclc/1239984577 |title=Plant galls of the Western United States |date=2021 |publisher=Princeton University Press |isbn=978-0-691-21340-8 |location=Princeton, New Jersey |pages=299–300 |language=en |oclc=1239984577}}{{Cite journal |last1=Perea |first1=Ramón |last2=Dirzo |first2=Rodolfo |last3=Bieler |first3=Stephanie |last4=Wilson Fernandes |first4=Geraldo |date=2021-01-06 |title=Incidence of Galls on Sympatric California Oaks: Ecological and Physiological Perspectives |journal=Diversity |language=en |volume=13 |issue=1 |pages=20 |doi=10.3390/d13010020 |doi-access=free |issn=1424-2818 }} Adults are small, {{Convert|0.7-1.2|mm|in}}, with yellow legs.{{Cite journal |last=Kinsey |first=Alfred C. |date=June 1923 |title=The gall wasp genus Neuroterus (Hymenoptera) |url=https://www.biodiversitylibrary.org/page/53512282#page/255/mode/1up |journal=Indiana University Studies |volume=10 |issue=58 |pages=108}} The galls it induces are {{Convert|10-30|mm|in}}, and present as swellings of the petioles and midribs of oak leaves. In this species of oak gall wasp, only the spring bisexual generation, consisting of both males and females, is known. However, an all-female parthenogenic generation in summer, which most oak gall wasps have, is possible.

File:N fragilis from Report of the State Entomologist on injurious and other insects of the state of New York (1917) (14781149311).jpg]]