Amphibolips globus, new species
Sexual generation
Host.--Quercus palustris
Gall.--A bud gall in June produced from weak lateral buds on previous year's growth of saplings 1 to 3 feet high, on sprouts from stumps and on lower limbs of small trees, occasionally from dormant buds on main trunk of trees. In good light, deep green with white spots at attachment of radiating fibers inside; in deep shade, more or less etiolated. Globular, firm, fleshy, bare, up to 18 mm. in diameter, not deciduous. Wall 1 mm. thick. Central cell relatively large, supported by many coarse, branching, radiating fibers. Larval cell 6 mm. by 3.2 mm. and its wall 1.5 mm. thick with big cells at base of the radiating fibers. Exit hole 2.2 mm. in diameter made while gall is still green. After the emergence of the maker the gall turns brown and becomes wrinkled. Many undersized galls are parasitized. Out of more than 200 galls collected only 20 makers emerged.
Habitat. — The type series of galls was collected at East Falls Church, Va. June 26, 1948. Adults emerged June 28, 30, July 2, 4, 1948. None of these galls was seen at this place in 1949, in 1950, or in 1951. Galls had been seen at Rosslyn and Lucketts, Va., Washington, D. C, and Lanham, Md.
”- LH Weld: (1952) New American Cynipid Wasps From Galls©
Reference: https://www.biodiversitylibrary.org/page/15672479#page/367/mode/1up