Amphibolips trizonata (sexgen)

Nichollsiella sulcata (agamic)

Disholandricus truckeensis (agamic)

Sphaeroteras pulchripennis (agamic)

Feron clarkei (sexgen)

Andricus murtfeldtae (sexgen)

Amphibolips tinctoriae (agamic)

Antron douglasii (agamic)

Amphibolips acuminata (sexgen)

Callirhytis apicalis (agamic)

Trigonaspis radicola (sexgen)

Xanthoteras emoryi (agamic)

Callirhytis morrisoni (sexgen)

Callirhytis quercusagrifoliae (agamic)

Callirhytis congregata (sexgen)

Callirhytis excavata (agamic)

Callirhytis perplexa (agamic)

Disholcaspis persimilis (agamic)

Andricus crassicornis (agamic)

Melikaiella fructicola (agamic)

Andricus rhizoxenus (agamic)

Disholandricus lasius (agamic)

Aulacidea harringtoni

Aulacidea tumida

Aulacidea ambrosiaecola

Diplolepis gracilis

Diplolepis similis

Bassettia gemmae (agamic)

Bassettia pallida (agamic)

Andricus vaccinifoliae (agamic)

Amphibolips trizonata, new species.

Gall.--A large, globular gall, from an inch to an inch and a quarter in diameter, externally resembling A coccineae, Osten Sacken, but internally of a white, pithy, cellular structure.

Five specimens, reared during June, 1882, from galls received May 2, 1882, collected in AZ. The gall is said to grow on the blossoms of an oak. 

Cynips sulcatus, new species

Gall: Two galls on petiole of live oak; they are irregularly roundish and are about the size and color of a large dried pea.

Habitat: AZ, NM

Holcaspis truckeensis, new species

Gall.--An irregular, inflated, hard, woody gall, over an inch long and about half an inch in diameter, issuing from a slit in a terminal twig of Quercus chrysolepis var vaccinifolia; polythalamous.

Habitat.--NM, CA

Dryophanta pulchripennis, new species

Gall.--The specimens of the gall from which this species was reared can not now be found in the collection, but the following description of it may assist in its identification:

from Arizona, a leaf of an undetermined oak with six galls on its under surface; four of these are in a row in the middle between the midrib and the margin; they are light brown, almost hemispherical, subopaque, reticulate, and with scattered, very minute, reddish tubercles, which have some short white hairs basally.

Reared during April, 1881

Dryophanta vesiculoides, new species

Gall.--In size, color, and general appearance exactly similar to the gall produced by D vesicula [[Neuroterus vesicula]](https://www.gallformers.org/gall/840); I can detect no difference, but, whereas that species is developed from the buds of Q alba, this one is developed from the buds of Q obtusiloba [stellata]. This, in itself, would not be a sufficient reason for considering it a distinct species, but the gallfly which issues therefrom is very distinct and much smaller.

ANDRICUS MURTFELDTAE, new species. 

Gall. — An irregular, hard, pithy, brown, globular gall; externally finely granulated and with a few short blunt spines; interiorly of a hard, pithy, brown substance ; polythalamous. Diameter, 8 mm. ; length, 10 mm. 

Described from 3 male specimens with the gall, labeled simply from Miss Murtfeldt, and probably taken at Kirkwood, Missouri. 

Amphibolips tinctoriae, new species

Gall.--A compressed ovate, brownish gall, the opposite sides of which are keeled; the shell is moderately thick, and internally there is a central kernel held in place by fibrous filaments. Length, 2 cm, diameter less than 1 cm. 

Two specimens reared October 16, 1871. Found in November 1870 under Quercus coccinea var tinctoria [velutina]

Holcaspis douglasii, new species

Gall.--The construction of this gall is on the same principle as the other Holcaspian galls, but instead of being globular it resembles a diminutive squash, the ridges surrounding the margin being prolonged into irregular tubercles, usually from 7 to 10 in number.

AMPHIBOLIPS ACUMINATA, new species

Gall.--The mature specimens of this species average considerably over 2 inches long by more than an inch in diameter; they are brownish yellow, subglobular, and acuminated at apex, constructed on the same principle as most of the apple galls, having a central kernel, held in place by a spongy substance, and a very thin shell. Some specimens are much more acuminated than others and what may be termed pepper-shaped, not more than half an inch in diameter and much less than 2 inches in length. The gall is attached to the twigs. 

One female specimen, reared June 24, 1879. The gall occurs in Washington on Quercus niger. The specimen from which the fly was reared was taken by Dr. L. O Howard in Maryland.

Andricus apicalis, new species

Galls--Irregular, brownish black globular galls of a dense pithy substance, growing on the roots of Quercus wislizeni, sometimes three or four together, pressing each other into irregular shapes. Diameter usually about half an inch.

Three specimens, reared by Mr. Albert Koebele, from galls collected in Sacramento County, California, but the year of collecting and the date of rearing are not given. A single specimen (Xo. o714) was reared February 17. 1886. The bright red color and smoky apices of wings will readily distinguish the species. 

Dryophanta radicola, new species

Gall.--This gall also could not be found in the collection. The Note Book says: Received from JG Barlow, Cadet, Missouri, one much shriveled gall, found on the roots of scrub oak. 

Reared May 21, 1886.

Dryophanta emoryi, new species

Gall.--A small, brown, thin-shelled, semiglobular gall, attached by a small point to the upper or under surface of a leaf of Quercus emoryi. Internally there is a small, central kernel, held in place by delicate filamentary fibers. Diameter, 2 to 3 mm.

Three specimens, reared December 13, 1880, from the above described gall; collected by Mr HH Rusby, at Silver City, NM.

Andricus morrisoni, new species

An irregular, globular gall, found at the base of a leaf, projecting about equally above and below; polythalamous. It is of a fleshy consistency and contains numerous larval cells; diameter from 4-7 mm.

Described from 1 femal and 7 male specimens, reared June 28, 1883, from a gall occurring on an unknown oak in Arizona, received from H.K. Morrison.

Andricus wisliceni, new species

A small, globular gall, with a slight projection at base where it is attached to the twig; it varies in color from a yellow brown to dark brown, and some are mottled with purple and brown. It is hard, and contains in the center a small larval cell; diameter, 3 to 4 mm.

Nine female specimens, reared October 14, 1886, from galls sent to the National Museum by Mr. Albert Koebele, collected in Sacramento County, California, on Quercus wisliceni.

Andricus congregatus n.sp.

An irregular, rugose, yellowish brown woody swelling, containing numerous cells growing apparently from the extreme tips of very slender twigs of Quercus chrysolepis, the gall appearing to have a long peduncle, or it may be at the apex of the petiole of a leaf, the leaf in consequence being aborted. The gall is more or less contracted in the middle and varies in length from 2 to 4 cm., and in diameter from 1 to 2 cm.

Seven female specimens, received from Prof. E. W. Hilgard, Oakland, California, and reared November 10, 1876. The gall also occurs on Quercus agrifolia, and Professor Riley says: "A woody deformation of staminate aments and quite abundant on some trees."

Andricus excavatus, new species

In the branches of the red oak, Quercus rubrum, toward the end of summer, appear long longitudinal slits or fissures, filled with irregularly shaped cells or kernels, which are usually smooth and polished, and generally of an oval, flattened form. These are the larval cells of a Cynipid, which fall to the ground in the fall, where the larvae within undergo their final transformation.

After the larval cells have fallen to the ground from their matrices, the twigs present broad grooves, fissures, and excavations, the relative length, depth, and appearance depending entirely upon the number of cells they had contained. One twig in the collection of the National Museum from which these larval cells had fallen exhibits a broad excavation over 2 inches long.

The flattened larval cell varies considerably in shape and size, but usually it is from 5 to 6 mm. long by 3 to 5 mm. in diameter.

Three female speciemns, in poor condition, reared June 6, 1883. The gall was collected somewhere in the New England States. I have, however, collected the same gall in North Carolina.

Andricus perplexus, new species.

A small globular gall, somewhat pointed at apex and covered externally with an exceeding fine, short, grayish pubescence or bloom. Internally the larval cell occupies most of the gall. Diameter, 5 mm.

One specimen, reared November 21, 1877. The gall was found on the ground in O'Fallen Park, Missouri, in October, and the species of oak upon which it grows is unknown.

Holcaspis persimilis, new species

A small, hard, globular gall, occurring on the twigs of the black oak and very similar in structure to other Holcaspid galls. It is, however, smaller, less than 7 mm. in diameter, and exteriorly it is very rough or rugose, with irregular raised lines and ridges.

Described from a single specimen, labeled simply: "Black-jack oak, issued November 10, 1868."

Callirhytis crassicornis, new species.

A peculiar, irregular, somewhat triangulated, hard, finely rugose, blackish seed-like gall, issuing from the twig, most of them being covered with a whitish efflorescence.

The gall, structurally, is similar to that produced by A. conifera, Ashmead, and the part embedded in the twig is triangularly shaved off to a sharp edge. The fly escapes from its larval cell through a hole perforated in the side.

Four female specimens received through Mr. F.B. Hough, reared October 10, 1884.

Callirhytis fructicola, new species

This gall consists simply of the white kernel or larval cell embedded in the interior or meaty portion of the acorn, or then on the outside near its base, generally hidden by the cup.

Two or three acrorns in Dr. Riley's collection, affected by this species, when cut open, revealed more than a dozen larval cells, closely pressing upon one another, and filling the whole interior of the acorn.

Six female specimens, reared April 5, 1873.

Callirhytis rhizoxenus, new species.

A large, irregular, more or less globular, fleshy swelling, occurring on the roots of an oak in Arizona, and containing numerous larval cells; some galls measure about 4 cm. in length; others are much smaller.

Specimens reared June 24 and 28 and July 6, 1882, from galls received from Mr. H.K. Morrison, collected on roots of a live oak at Fort Grant, Arizona.

Callirhytis lasius, new species.

A hemispherical, hard gall, occurring on the upper or lower surface of the leaves of Q. chrysolepis, and covered with a pale, yellowish wool, more or less ringed with ferruginous, some being entirely rust-red; it is polythalamous and in general appeareance not unlike A. flocci, Walsh, but the larval cells are held closely together, embedded in the hard substance composing the gall. Diameter from 5 to 9 mm.

Numerous specimens; reared by Mr. Albert Koebele, at Placer County, California, December 19, 1885, from galls on Quercus chrysolepis; others reared January 2, 1882, and December, 1885.

Aulax mulgediicola, new species.

The galls of this species consists simply of a thin-shelled larval cell, embedded in the pith of a common plant, Mulgidium acuminatum; usually there are numerous cells crowded together side by side in the pith, and externally the stem or stalk shows no apparent gall, swelling, or deformation, although occasionally a slight swelling of the stalk occurs.

Numerous specimens, most of them reared during January and February, 1886, from galls collected in the District of Columbia.

Aulax sonchicola, new species.

Four specimens, reared during June, 1887, from a gall occurring on the stem of a species of wild lettuce, Sonchus oleraceus, found at Asheville, North Carolina, by the writer. In my own collection are specimens collected in Canada.

Aulax ambrosiaecola, new species.

The insects from which the following description is drawn up were received from Miss Mary Murtfeldt, of Kirkwood, Missouri, with the statement that they were parasitic on a lepidopterous gallmaker, on Ambrosia.

Now there is some mistake here; the flies are unquestionably true gallmakers and evidently form larval cells in the pith of this plant, not observed by Miss Murtfeldt; and, moreover, their structural characters prove conclusively that they are not parasitic. It is also quite probable that the Lepidopteron is inquilinous in the galls produced by this species.

Four specimens, 1 female and 3 males, reared October 18, 1881, and June 13, 1882. It is unfortunate that none of the galls were sent with the flies.

Rhodites gracilis, new species.

An irregular, inflated, rounded gall, with the top broadened and somewhat flattened, the edges surrounded with short, blunt tubercles, which are probably the apices of elevated ribs.

Described from 4 specimens, 1 female, 3 males, reared May 7, 1870. The name of the rose on which it occurs is unknown. Dr. Riley in his Note Book says: "A small gall, bearing a general resemblance to a mangel-wurzel seed or large beet seed, occurring on rose trees, and especially on the single wild rose. The galls were first noticed in September."

Rhodites similis, new species.

An irregularly rounded, brown or brownish yellow, pithy gall on the smaller stems of an unknown wild rose. They vary greatly in size and shape, from a small pea-like form to a more or less globular or oblong shape, some of them being an inch or more in length. There is no consistency in their shape; some are perfectly round or oblong or of various irregular shapes.

Twenty-seven specimens, reared July 27, 1883, from galls collected by Mr. Lawrence Bruner at Point of Rocks, Wyoming.

Bassettia gemmae, new species

Described from three female specimens, labeled "From JG Barlow, Cadet MO, April 27 1880, ovipositing in buds"

Bassettia pallida, new species

Described from a single speicmen labeled "Savannah, Georgia April 15, 1884."

Callirhytis vacciniifoliae, new species

Gall
A thin-shelled, globular gall with a central kernel held in place by radiating filaments. It closely resembles the gall produced by Andricus inanis (Osten-Sacken), but it is generally smaller in size and darker in color. The gall measures from 0.5 to just over 1 inch in diameter and is found on Quercus vacciniifolia in California.

Four specimens were reared on October 16 and December 4, 1884, from galls collected by Prof. J. H. Comstock at Truckee, California, on Quercus vacciniifolia.

Descriptions of new Cynipidous Galls and Gall-Wasps in the United States National Museum