Amphibolips globus agamic

Quercus falcata, palustris
Bud galls
Agamic galls slightly pointed at end, green, up to 14 mm in dia, wall thin, dropping in late Aug.

[Sexual generation listed on Q imbricaria]

[Photo caption]
[No photo] Q palustris. Galls of the agamic generation at the end of the season's growth in Aug and Sept up to 14 mm in dia, dropping when mature and becoming slightly wrinkled. Adults were cut out in Oct and Nov the next fall.

Fig. 294. Galls of the agamic generation slightly pointed at end, green, up to 14 mm in dia, wall thin, dropping in late Aug.

Amphibolips globus, new species
Agamic generation?

Host.--Quercus palustris

In early September 1948 approximately 65 bud galls were collected on the ground under a large pin oak tree only a few feet from where galls of A. globus [sexgen] herein described were taken the previous June. Similar galls had not been seen here before — circumstantial evidence that it is the alternating form. It occurs in August and September at the end of the season's growth. It is smooth, bare, green with small purple spots marking the attachment of numerous radiating fibers within, up to 14 mm. in diameter, rounded at distal end, slightly tapering at attached base, the wall relatively thin (.8 mm.). Larval cell ellipsoidal, 6 by 4 mm. Galls drop in late August or early September and soon turn brown and become slightly wrinkled. At this time the nutritive layer is all used up and full-grown larvae and pupae are found inside. Some may emerge in the fall but the adults described below were cut out of the galls on October 18 and November 5, 1949. As they are thought to be the alternating agamic generation of globus they are not given a different specific name.