Andricus ellipsoidalis

Amphibolips ellipsoidalis

Gall on Quercus palustris, Q falcata.

Amphibolips ellipsoidalis

Bud galls.

Cylindrical, 5 by 14 mm, tapering toward the blunt ends, mottled. In early spring from weak lateral buds on Q palustris and imbricaria. Deciduous. The fly probably emerges early the next spring as one was found dead in breeding cage April 10.

Andricus ellipsoidalis

Quercus coccinea, marilandica, palustris, velutina
Bud galls
Spindle-shaped, blunt at both ends, up to 14 mm long, smooth, mottled, dropping in April-May.

[Photo caption]

94. On Q palustris. Also on Q coccinea, velutina, marilandica. Galls drop in late April (DC). The type was found in breeding cage Apr 10 the next spring.

[Presumed synonyms]

Quercus falcata, imbricaria
Bud galls
Probably Andricus ellipsoidalis. From weak lateral buds on previous year's growth in April, dropping when mature. FL and DC.

[Photo caption]

95. Never reared. Galls found on ground under Q velutina June 19 on the sand dunes in northern Indiana.

96. Never reared. On Q imbricaria May 10 Joliet IL. Compare Figs 94, 95.

Amphibolips ellipsoidalis, new species

Host. — Quercus palustris.

Gall (fig. 26). — A bud gall of early spring as new growth is starting. Spindle-shaped, blunt at both ends, up to 14 mm. long by 5 mm. in diameter, smooth, mottled with white when fresh, falling to ground when mature. Produced from weak lateral buds.

Habitat. — The type fly was reared from a gall collected May 9, 1920, on Q. palustris at "Dyche" on the wooded banks of the Potomac below Alexandria, Va. The fly was found dead in breeding cage April 10, 1921, Similar galls have been found in spring on Q. coccinea at Ravinia and Fort Sheridan, IL.; Miller, Ind.; and Washington, D. C. A shorter and broader gall with the same structure was seen on Q. imbricaria at Joliet, IL.

Andricus ellipsoidalis

Amphibolips ellipsoidalis

Produce bud galls on Quercus falcata, palustris.

Amphibolips ellipsoidalis comb. rev.

6 species from the genus Andricus herein are transferred to Amphibolips: A ellipsoidalis Weld, 1926 comb. rev.