Diplolepis rydbergiana
The type fly and gall of this species are in the National Museum. The writer collected galls at the type locality. Las Vegas Hot Springs. N. M., in October, 1921, and cut out living flies January 2. Galls sent east for rearing gave flies December 31, January 4, 20, February 1 and 6, the flies coining out in largest numbers on last date. From galls collected at Shoemaker on October 23, 1922, flies emerged and were alive on February 16, 1923. Galls were collected at Wagon Mound also. They are saddled on the midrib on the under side of the leaf. The type fly measures 2.8 mm. The series of reared specimens ranges from 2.5-3.8 mm. Average of 88 specimens, 3.16 mm.
”- LH Weld: (1926) Field notes on gall-inhabiting cynipid wasps with descriptions of new species©
Reference: https://www.biodiversitylibrary.org/page/7610635#page/299/mode/1up