Callirhytis piperoides (agamic)

Disholcaspis bassetti (agamic)

Callirhytis favosa (sexgen)

Zapatella quercusphellos (sexgen)

Zopheroteras compressum (agamic)

Amphibolips femoratus (sexgen)

Neuroterus fragilis (sexgen)

Aceria caryae

Vasates quadripedes

Vasates aceriscrumena

Dasineura communis

Acericecis ocellaris

Macrodiplosis niveipila

Polystepha pilulae

Polystepha pustuloides

Lasioptera querciperda

Callirhytis perditor (agamic)

Callirhytis seminator (sexgen)

Amphibolips cookii (agamic)

Callirhytis clavula

Diplolepis nodulosa

Rabdophaga salicistriticoides

Aculops tetanothrix

Rabdophaga rigidae

Euura salicispomum

Iteomyia salicisverruca

Aculops aenigma

Rabdophaga salicisnodulus

Euura salicisovum

Rabdophaga salicisbatatus

Euura salicisdesmodioides

Rabdophaga strobiloides

Iteomyia salix-tooth-gall

Callirhytis quercuspunctata (agamic)

Neuroterus gillettei (sexgen)

Amphibolips q-coccinea-like-cookii (agamic)

Rhopalomyia lateriflori

Andricus piperoides

Q rubra, CT. Summer second year before Spring. Red oaks, MA. Fuzzy, globular.

Holcaspis bassetti

Q bicolor, MI. Attenuated cone clustered on twig.

Neuroterus favosus

Category: Gall involving or attached to the lamina of the leaf
Galls making a sort of thickened and elevated area in the lamina
The platform is made by a single polythalamous gall. 

Hosts: Q. tinctoria [velutina], Ohio; Q. palustris, Q. rubra, Mass. 

Description: Irregular, pustular, elevated area. 

Category: Monothalamous terminal enlargements or club-galls of twigs

Callirhytis similis Bass. 1864. p 683. (Cynips) Q. ilicifolia, Conn; Harvard Coll, NY; Beut. Cat., Q. nana [ilicifolia], Q ilicifolia, NJ; Q ilicifolia, Q stellata [presumably an error?], Mass, RI.

Description: Terminal or not terminal.




Acraspis compressum

Q rubra.
Succulent, solid, spherical galls usually firmly attached to the leaf-blade
On ground over winters, 2-3 mm. White, wax-like in texture, plate 4, 78.

Philonix.

[Listed as Philonix compressum in the image caption]

Andricus femoratus

Q tinctoria [velutina], rubra. 

Globular, small, fibrous oak apple

FL, IN

Neuroterus fragilis

Host: Quercus virens (?) [sic]

Gall spherical, hemispherical or conical, usually succulent, and consisting of a wall that encloses a chamber in which the larval cell lies free; some of these galls are loosely attached to the leaf, but more often they are imbedded in the blade.

Eriophyes. Margin-rolled gall. Carya. Mass. July. Margins of leaf rolled toward upper face and much crinkled. Mites live within the fold.

Eriophyes sp.

Acer rubrum

Pimple gall

MA, May

Phytoptus quadripedes

Acer dasycarpum [saccharinum]

Bladder-like pouches above leaf

MA, June

Phytopus acericola

Acer saccharinum [Thompson's photo shows Acer saccharum]

Gall slender and tapers to both extremities

MA, June

Cecidomyia 

Acer rubrum, saccharinum

On rib of leaf distorting same above and below. Common, unnamed, not reared with certainty and possibly Dasyneura communis Felt.

MA, late June

Aphididae [unclear whether this is the same gall but Thompson's photo resembles observations of this gall seen recently and no aphid gall of this sort is known from other literature]

Acer saccharinum [figure shows A saccharum]

Irregular, woody excrescences above and below leaf. Plate 13, 95
MA, June

Sciara ocellaris

Acer rubrum

On upper side of leaf; small, conical pustules of pale yellowish, green bordered with an orange scarlet circle outwardly deepening to maroon.

MA, May

Cecidomyia niveipila

Q nigra, alba, ilicifolia, rubra, coccinea

Cecidomyia pilulae

Asphondylia pilulae

Oak lentil gall on upper side of leaf

Cecidomyia pustuloides

Q ilicifolia 

June-July. Low, flat-topped bladder; green with brown circle above; yellow with small central point of black beneath. Some slightly lenticular. 

MA

135. Cecidomyia (Lasioptera (?) querciperda)

Oak twigs. Deformation of small twigs. Woody, polythalamous, oval knot; surface mamillate, with globular swelling of the separate chambers.

MA, June

147. Cecidomyia (Probably Lasioptera querciperda)

Q alba. Q rubra. MA, RI. Leaves gall in Sept. Series of half inch long oval enlargements of twig. Excentric on limb and successive ones run spirally around it.

Andricus perditor

Quercus ilicifolia

Acorn aborted and becomes a gall

Callirhytis seminator

Quercus alba

Gall appears early July, plate 2, 8. Flies the last of June.

Cynipidae [tentatively taken to be A cookii]

Quercus rubra, coccinea. MA. Sept-Oct. Soft, inanis center; purple-brown. Some are keeled on twigs 

Callirhytis clavula 

Cynips tuber
Cynips phellos
Cynips arbos

Terminal club

Cecidomyia triticoides

Host: Salix sp.

May-June. Remote resemblance to head of wheat. End of branch aborted making a dense tuft of small leaves.

Range: MA

Phytoptus sp. [tentatively assigned to A tetanothrix]

Willow, Mass. May. Elevated, irregular masses," single or compound; on upper side of leaf and more rarely below. Both positions on same leaf. Green or red according to host willow.

Cecidomyia rigidae

Phytophaga rigidae

Willow club gall. Mass. June. O. S. calls this "Cecid. siliqua." Egg evidently laid in terminal bud which is excavated by the larva burrowing downward. Top appears to lie always open, plate 21, 42.

Nematus pomum

Willow. Mass. June. Rounded, yellowish on under side of leaf. Sawfly larva, single cell.

Cecidomyia verruca

Salix humilis. Mass. Oct. Dome shaped, glabrous, above; turret-like, below. Cells in level of leaf proper.

[Unnamed] Probably acarus.

Salix enigma. Willow mop gall. Mass. Oct. Aborted branch; twists to a dense, dark grey mop of dried leaves. Inner ones short and smooth, outer very hairy

Cecidomyia nodulus

Willow species. Mass. May- June. Like club-gall, but less abrupt and does not destroy growth of stem.

Euura ovum

Salix species. Mass. Oct. Ovoid, scurfy elevations on stem; single cell.

Cecidomyia batatas

Rhabdophaga batatas

Willow, Mass., R. I. May-June. Galls strung along stem; irregular, woody

Nematus desmodioides

Weeping willow. Mass. Late June, Oval excrescence above and below leaf blade.


Cecidomyia strobiloides

Rhabdophaga strobiloides

C. strobiliscus. Willow species. C. strobiloides Mass., N. H. June- July. Pine cone forms on stem.

[Undescribed. Genus assigned to Iteomyia based on appearance.]

Willow [Salix discolor assigned as a placeholder]

Mass. July. Conical, smooth above leaf; fleshy with small cavity below. 

Callirhytis punctatus Bass

April. Abrupt woody swelling. Quercus rubra, tinctoria [velutina], marylandica, nigra, coccinea, ilicifolia

Neuroterus gillettei Bass

Q obtusiloba [stellata].

Pustular swelling

Cynipidae [gall on Q rubra is likely [A cookii](https://www.gallformers.org/gall/1143)]

Quercus rubra, coccinea. MA. Sept-Oct. Soft, inanis center; purple-brown. Some are keeled on twigs 

50. Tomentose aster gall. Aug. Mass. Ovoid on end of twigs. Open at summit showing irregular, white, succulent mass. Several vertical cells in each gall, plate 7, 50.

[added by E.P. Felt, editor]: *Rhopalomyia (?) thomi* Felt

An illustrated catalogue of American insect galls