Celticecis spiniformis

Polystepha pustuloides

Vaccinidiplosis vaccinii

Asphondylia autumnalis

Asphondylia patens

Asphondylia rudbeckiaeconspicua (summer generation)

Asphondylia helianthiglobulus

Janetiella ulmii

Phylloxerina nyssae

Dasineura pudibunda

Dasineura chinquapin

Neolasioptera vernoniae

Cecidomyia meibomiae

Dasineura semenivora

Schizomyia eupatoriflorae

Neolasioptera ramuscula

Schizomyia impatientis

Caryomyia persicoides

Schizomyia umbellicola

Schizomyia racemicola

Asteromyia tumifica

Neolasioptera cornicola

Asteromyia laeviana

Resseliella clavula

Neolasioptera pierrei

Neolasioptera nodulosa

Neolasioptera farinosa

Neolasioptera viburnicola

Neolasioptera linderae

Asphondylia recondita

Unknown r-hirta-leafy-flower-heads

Cecidomyia unguicola sp. nov.

Gall.--Somewhat of the shape of a small carpet-tack with the broad part attached to the leaf. The base is rounded at the sides, from which it suddenly becomes narrow, terminating in a sharp point at the apex. Inside it is hollow and contains a single larva. Found in clusters on the under side of the leaf of hackberry (Celtis occidentalis). Length about 3 to 5 mm; width of base about 2 to 3 mm.

Habitat: OH

Cecidomyia? pustuloides sp. nov.

Gall.--Circular, blister-like, and slightly protruding on each side of the leaf. It measures about 4 to 7 mm in diameter. Found in clusters on the leaves of different kinds of oaks (Quercus rubra, coccinea, tinctoria [velutina], nana [ilicifolia], marylandica, in September.

Habitat.--NC, NJ

Cecidomyia vaccinii

Gall. Green, cock's comb or oyster-shaped, and fastened to the ribs of the leaf by a hinge and when mature burst open like the valve of a shell. It is hollow inside and contains one or two larvae which leave the gall to transform in the ground.

The gall is found in September and early in October on the underside of the leaves of Vaccinium stamineum.

Habitat. DC, NC


Asphondylia autumnalis sp. nov.

Gall.--Globular or irregularly rounded with a number of aborted leaves at the apex, and elations of the stems of the plant at the sides. It is green outside and white inside. Interior rather soft, pithy and somewhat succulent, causing the gall to shrivel up and decay after the flies have emerged. Inside are a number of cells in which the larvae live. These transform in the gall and the flies emerge during the latter part of August and early in September. The gall measures from 20 to 30 mm in length and from 15 to 30 mm in width. It occurs on Helenium autumnale. 

Habitat.--Valley of the Black Mountains, NC

Asphondylia patens sp. nov.

Gall.--An accumulation of aborted leaves, forming a rosette-like body, measuring from 10 to 20 mm in length. In the center it is bud-like, and inhabited by a single larva. The gall is formed on the tips of branches of a tall, pale, purple-flowered aster (Aster patens) and is caused by the arrest of growth of the terminal buds. 

Habitat: NC

The gall is quite common during the latter part of August. The larva pupates in the bud-like chamber and the adult emerges in September.

Asphondylia conspicua

Asphondylia rudbeckiae conspicua

The gall of this species is found on Rudbeckia triloba and Rudbeckia laciniata. The adult and gall were described by Osten Sacken and the gall is figured here for the first time. I have taken it in the valley of the Black Mountains, North Carolina, in August, and have also received it from Miss Alberta Field from Ashtabula, Ohio. The adults emerge late in August and early in September. 

Asphondylia globulus

Asphondylia helianthi globulus

The gall of this species is found on the giant sunflower (Helianthus giganteus) and sawtoothed sunflower (Helianthus grosse-serratus) in August and September. The pupa, gall and adult were briefly described by Osten Sacken and again in detail by Martin. The adults emerge in September and October.

Cecidomyia ulmii sp. nov.

Gall.--This is made by folding and growing together of the small, immature, terminal leaves or leaf-buds of the American elm (Ulmus americana), causing them to swell into galls.

Habitat: NY

The gall may be found during June and July. The imago emerges during the same months.

Cecidomyia nyssaecola sp. nov.

Gall. This is made by a narrow upward and inward fold of the margin of the leaf of sour gum (Nyssa sylvatica) and measures about .3 to 1 mm in diameter and from about 2.5 to 3.5 mm in length. Sometimes only a few of the folds occur on a leaf and again the entire margin on both sides of the leaf is covered with them, causing the leaf to become scalloped. The gall is pale yellowish or yellowish green and contrasts with the dark green leaf, making it a rather conspicuous object, readily detected. The galls are sometimes more or less contiguous when occurring in numbers on the same leaf. When dry the gall becomes brown. 

Habitat: VA, KY, IL, NY, NJ, PA, NC

Very common everywhere in the vicinity of New York, from which locality my specimens were obtained. The gall may be found in June and the fly emerges in July.

Cecidomyia pudibunda

Gall.-- Consists of a fold between the ribs on the leaf of hornbea (Carpinus caroliniana) with the opening on the underside of the leaf. It is usually red above and pale green beneath. In length the galls vary from 4 mm to the width of the leaf from the midrib to the margin. Usually several or many galls are found upon a single leaf. Formed in June and the larva leaves the gall to pupate on the ground. The adult appears in July. 

Habitat: NY

Cecidomyia? chinquapin sp. nov.

Gall.--Consists of a small irregular swelling in the burr of chinquapin (Castania pumila). It contains a single larva which leaves the gall to pupate in the ground.

Habitat.--NC

The gall may be found during the latter part of September.

Cecidomyia? vernoniae sp. nov.

Gall.--Green, sometimes tinged with red, rounded or elongate, and of the texture of the stem of the plant. Inside it is soft, fleshy, and contains a single larva in an elongated narrow channel. Length about 7 to 12 mm; width 5 to 9 mm.

When dry the gall becomes brown and pithy inside and somewhat resembles a cherry-pit. It is usually situated on the mid-rib of the leaf of ironweed (Vernonia noveboracensis).

Habitat: NC, NY, IN

The gall is quite common during September, and the larvae overwinter and transform in the gall.

Cecidomyia? meibomiae sp. nov.

Gall. Dull green, subfusiform or elongate-oval, more or less tapering to a long point at the apex, which sometimes show parts of deformed leaves. Inside it is hollow, inhabited by a single larva in a rather large oval chamber at the bast of the gall. Beyond this chamber it is lined with whitish fiber to the tip of the gall. It measures from 8 to 22 mm in length and from 4 to 8 in width. Found during the latter part of August and in September in clusters of three or more at the terminal part of the stem of several species of tick-trefoil (Meibomia [Desmodium] rigida, laevigata, pauciflora, etc).

Habitat: NC, NY

Cecidomyia? semenivora sp. nov.

Gall. Green, globular or irregularly rounded with a small nipple at the apex and it is attached by a short stalk to the base of the plant. Inside it is hollow and contains many larvae which feed upon the deformed seeds. The gall is about the size of a pea or gooseberry and measures from 6 to 14 mm in diameter.

The gall is a malformation of the seed capsules of apetalous or cleistogamous flowers of stemless or acaulescent violets (Viola cucullata, palmata, affinis, septentrionalis and probably other species).

The specimens from which my descriptions were made were collected by Mr W DeW Miller at Plainfield New Jersey. According to Mr Miller the gall may be found from July until late in October. The larvae when mature spin cocoons inside the gall and hibernate in this state. The adult is unknown.


Cecidomyia? eupatoriflorae sp. nov.

Gall. Green, succulent and pubescent. Globular or irregularly rounded, with or without a depression at the apex around which are deformed petals of the flowers. It is usually on a short stalk, like the flowers of the plant. Inside it is soft, watery, and is inhabited by several larvae, which live in separate chambers. Length from about 10 to 16 mm; width about 8 to 15 mm. The gall grows singly or in clusters among the flower-heads of Eupatorium ageratoides [Ageratina altissima], in September. 

Habitat: NC, NY

Cecidomyia? ramuscula sp. nov.

Gall. This is a fusiform swelling on the branches of aster (Aster [Symphyotrichum] dumosus and patens). Inside is an elongate, narrow chamber, inhabited by a single larva, which remains in the gall to pupate. Length 10 to 20 mm; width 5 to 8 mm.

Habitat: NC in September

Cecidomyia impatientis

Gall. Baron Osten Sacken described only the gall of this species, as a succulent swelling at the base of the flower of Impatiens fulva [capensis] in September. Walsh and Riley described the gall and larva in detail, with figures of the gall and breast bone of the larva. They also give Impatiens fulva [capensis] as the host plant. I have taken the gall at Pine Hill, Catskill Mountains, NY, and in the valley of the Black Mountains, NC, in September, on Impatiens pallida. The gall is very succulent and soon decays after the larvae have escaped from it.

Cecidomyia persicoides

Gall. The gall only was described by Osten Sacken and subsequent writers. It is variable in size, round and covered with short down-like hairs. It occurs on the underside of the leaves of different kinds of hickory. The adult is unknown.

Cecidomyia umbellicola

Cecidomyia sambuci umbellicola

The gall of this species was found by Osten Sacken on the red-berried elder (Sambucus pubens [racemicola]). I have taken it in June on the common elder (Sambucus canadensis). The larva and adult are unknown.

Cecidomyia? racemicola

Rhopalomyia racemicola

Gall. Green, smooth, rounded, tapering to a point at the apex, giving it a bud-like appearance. Inside it is hollow and contains a single larva. Length about 3 mm and 2.5 mm in diameter.

Found singly, or in clusters, among the racemes of different kinds of goldenrod (Solidago canadensis [sense unknown], puberula, serotina [gigantea] and probably other species). 

Habitat: NC, NY, DC

The galls may be found in September and are somewhat difficult to detect, owing to their resemblance to the buds of the goldenrod flowers. The larvae leave the gall in autumn and enter the ground to transform.

Lasioptera tumifica sp. nov.

Gall. This is an irregular, rounded, elongate, or kidney-shaped, gnarly, leather-like swelling, usually on one side of the stalk of goldenrod (Solidago rugosa). Sometimes it almost or entirely encircles the stem. It is leathery outside and rather soft and pithy inside, containing many orange larvae. It is found from close to the ground where the roots begin everywhere along the stalk to nearly the middle of the plant, but usually near the lower part. The gall measures from 8 to 24 mm in length and from 5 to 15 mm in width.

Habitat: NY

The larvae transform in the gall and the adults emerge in May.

Lasioptera cornicola sp. nov.

Gall. Woody swellings on the twigs, branches or trunks on the dogwood (Cornus stolonifera [sericea]), measuring from about 6 to nearly 150 mm in length. When situated on the twig, the gall is considerably smaller than those on the larger branches and trunk. It sometimes gnarls the trunk from about one to six inches or more in length. Inside it is hard, woody, with many elongate chambers, each containing a larva. 

Habitat: NY

The gall is rather common and may be found during all seasons of the year. The larvae overwinter and pupate in the galls, and the adults emerge during May and June.

Lasioptera asterifoliae sp. nov.

Gall.--Circular, flattened, eye-like blotches on the leaf of a species of aster, measuring about 5 mm in diameter. Purplish with a sordid whitish centre and margin. Underside dull whitish. Found singly or in numbers, all depending upon the size of the leaf.

Habitat: NC

The larva pupates within the gall and the fly emerges during the same year in August and early in September.

Lasioptera clavula

Cecidomyia clavula

Gall.--On the terminal twigs of dogwood (Cornus florida). It is club-shaped and about 0.5 to 1 inch long. Inside is an elongate channel inhabited by one or more larvae.

The larvae leave the gall in September and October and enter the ground to transform. They overwinter and the adults emerge during May and June.

Lasioptera sambuci

Cecidomyia sambuci

This species was heretofore known from the larva and gall only, and the adult is here described for the first time. The gall is an irregular gnarly swelling on one side of the stem of the elder (Sambucus canadensis). The larvae overwinter and transform in the gall, and the adults emerge the following May and June. The gall is very common in the vicinity of New York.

Lasioptera nodulosa sp. nov.

Lasioptera farinosa [partial synonym; retained as valid species for other galls]

Gall.--Knot-like or gouty, elongate or rounded swelling on the smaller terminal branches of blackberry (Rubus villosus [flagellaris]). Often there are several galls upon a single twig. Inside there is an elongate chamber inhabited by a single larva. The larva transforms in the gall and the adults emerge in May and June.

Habitat: NY, OH, NJ

The galls are larvae were described and figured by Professor John B Smith and FM Webster as Lasioptera farinosa but they belong to the new species here described. The gall is quite common everywhere in the vicinity of New York City; it somewhat resembles the swellings produced by the larvae of Agrilus ruficollis, which is found on the large stalks of blackberry.

Lasioptera farinosa

Cecidomyia farinosa
Diplosis farinosa

Gall.--Irregularly rounded and situated on the underside of the midrib or on the petiole at the base of the leaflet of blackberry (Rubus villosus). It is covered with a farinaceous powder and when fresh is rather soft and fleshy, but becomes hard and woody when old. Inside are several cells inhabited by the larvae. These overwinter in the gall and the adults emerge in May and early June. The gall measures from 6 to 12 mm in diameter.

Habitat: NY; NJ; NC; Canada

This species was known heretofore only by the gall described very briefly by Osten Sacken. It is quite common locally in the vicinity of New York City and may be distinguished easily from Lasioptera nodulosa, with which it has been confounded by certain writers. L farinosa always occurs on the leaves and petiole of the blackberry while L nodulosa is a gouty swelling on the stems of this plant. 

Lasioptera viburnicola sp. nov.

Gall.--Gnarly, elongate swellings on the larger branches of arrow-wood (Viburnum dentatum). It is soft, pithy inside, and the larvae make long deep channels in the wood of the branch, beneath the pithy portion of the gall. Length 30 to 75 mm; width 10 to 25 mm.

Habitat: NY

The larvae overwinter and transform in the gall.

Lasioptera? linderae sp. nov.

Gall.--Gnarly, elongate, woody swellings on one side or surrounding the smaller twigs or branches of spicebush (Lindera benzoin). It is hard and woody inside with a number of elongate, narrow chambers, in which the larvae live. Length 15 to 60 mm; width 7 to 10 mm.

Habitat: NY

The larvae overwinter and transform in the gall. The adult is unknown.

**Asphondylia patens** sp. nov.
...
*Gall*... — An accumulation of aborted leaves, forming a rosette-like body, measuring from 10 to 20 mm. in length. In the center it is bud-like, and inhabited by a single larva. The gall is formed on the tips of branches of a tall, pale, purple-flowered aster (*Aster patens*) and is caused by the arrest of growth of the terminal buds...
The gall is quite common during the latter part of August. The larva pupates in the bud-like chamber and the adult emerges in September.

Cecidomyia rudbeckiae sp. nov.

Gall. This is a deformation and enlargement of the flowerlets of the cone-flower (Rudbeckia hirta), sometimes deforming all the flowers in the cone. The enlargements are in form of leaflets which are usually greenish in color or are tinged with brown or reddish.

Habitat: NC

The fly emerges in August.

New species of gall-producing cecidomyidae