Aulax chrysothamni, new species

Gall.--Polythalamous. White, densely covered with white felt-like substance. Elongated, rounded or club-shaped, enlargements of the terminal twigs of the branches of a species of Chrysothamnus (Bigelovia), measuring 15 to 30 mm in length and 12 to 20 mm in diameter. Sometimes two or three galls are in a row on the same branch. Internally the gall is white and of a pithy substance.

Range: Tucson, AZ

- William Beutenmuller: (1908) A New Cynipid from Arizona^©

Reference: https://www.biodiversitylibrary.org/page/33455878#page/57/mode/1up