Feron clarkei (sexgen)

Callirhytis quercifoliae (sexgen)

Callirhytis confusa (sexgen)

Dryocosmus quercusnotha (sexgen)

Dryocosmus cinereae (sexgen)

Acraspis gemula (sexgen)

Dryophanta clarkei

Dryophanta vesiculoides
Diplolepis vesiculoides

Gall: Formed in the buds of the white oak (Quercus alba) and post oak (Quercus minor [stellata]) in May. Polythalamous. Brown, small, round, thin-walled. Inside the larval vells are separated by very thin partitions. In general appearance the gall resembles that of Neuroterus vesiculus. Diameter about 3 mm.

Habitat: MA, NY, NJ

Specimens all female

Dryophanta quercifoliae 

Andricus quercifoliae
Diplolepis querci-foliae

Gall: On the leaves of turkey oak (Quercus catesbaei [laevis]) in April and May. Succulent, round, green, with a loose, whitish kernel. Constructed in the same manner as Dryophanta aquaticae, but much smaller.

Habitat: FL

Closely allied to D palustris. The gall is longer and somewhat cup-shaped.

Dryophanta confusa

Cynips quercus confusa
Neuroterus confusa
Diplolepis quercus-confusa

Gall: Attached to the principal vein on the under side of the leaf of laurel oak (Quercus laurifoliae) in April. Small, globular, succulent, yellowish-green. Hollow inside with a pupa-like kernel. Diameter transversely, 1.5 mm; vertically, 2.5 mm.

Habitat: FL

Dryophanta notha

Cynips quercus notha
Andricus notha
Callirhytis notha
Callirhytis quercus-notha
Andricus pustulatoides
Neuroterus notha
Callirhytis pustulatoides

Gall: Singly on the points of the acute lobs of the leaves of scarlet oak (Quercus coccinea), red oak (Quercus rubra), and pin oak (Quercus palustris), in May. Monothalamous. Blister or bubble-like, oblong, thin-shelled and succulent. It is green and the surface shows some longitudinal semitransparent veins. Hollow inside, containing a free seed-like kernel in which the larva lives. This kernel is oblong oval, rounded at one end and somewhat pointed at the other.

Habitat: MA, CT, NY, NJ, PA

The flies emerge late in May and early in June.

Dryophanta cinereae

Diplolepis cinereae

Gall: On the under side of the leaves of upland willow oak (Quercus brevifolia=cinerea [incana]) in April and May. Monothalamous. Greenish gray, somewhat longitudinally ribbed and rugose. Hemispherical or bag-shaped, thin-shelled, containing a loose kernel which rolls around freely. On the upper side the gall is indicated by a slight discoloration of the leaf. Diameter at base, 4 mm; height 3.25 mm.

Habitat: FL

The gall of D cinereae is practically the same as that of Callirhytis saccularia and it is possible that the latter species will prove to be a synonym of D cinerea. 

Dryophanta pallipes

Gall: Among the buds of thrifty young shoots of white oak (Quercus alba) early in May. The gall is oblong oval, thin-shelled and of a blackish brown color. It does not prevent the developed of the leaves below it, but immediately surrounding its base half a dozen or more long, brown thread-like bodies appear. The fly emerges from the apex of the cell, leaving it resembling a miniature egg-shell with the end removed. Length about 2.5 mm; diameter about 1.5 mm.

Habitat: CT, NY, NJ, PA

The flies emerged from the gall during May.

North American species of Dryophanta and their galls