Asphondylia auripila

Asphondylia apicata

Asphondylia barbata

Asphondylia clavata

Asphondylia digitata

Asphondylia discalis

Asphondylia fabalis

Asphondylia florea

Asphondylia foliosa

Asphondylia resinosa

Asphondylia pila

Asphondylia rosetta

Asphondylia silicula

Asphondylia bullata

Asphondylia villosa

Diagnosis. — This species forms a leafy stem gall that is always found in a large aggregation (Fig. 1a).

Diagnosis. — This species forms an apical leaf bud gall (Fig. Id).

Asphondylia barbata Gagne,
New Species

Diagnosis.— This species and villosa are indistinguishable, but their galls, although showing some resemblance, are distinctly different. Both are squat leaf galls with a rugose, hairless patch at the base. That of villosa is covered for almost its entire length with long hair (Fig. lb), while that of barbata is covered for only slightly more than half its length with short hair. 

Asphondylia clavata Gagne,  New Species

Diagnosis.— This species and pilosa are indistinguishable. Galls of the two species have the same general form except that that of clavata is smooth (Fig. 2g), while that of pilosa has a thick covering of hair (Fig. 2e).

This species forms a digitate, bilaterally flattened gall on the under surface of the leaf (Fig. 2h).

Diagnosis.— This species forms a circular, bilaterally flattened gall on the undersurface of the leaf (Fig. 2c).

This species forms a bean-shaped gall on the under surface of the leaf (Fig. 20.). 

This species forms a cylindrical to pear-shaped flower gall.

This species forms a short, leafy stem gall (Fig. 1 b). Such galls are never found in aggregate as are those of auripila.

This species forms a short, leafy stem gall that is completely covered with hard, brown resin (Fig. Ig).

This species and clavata are indistinguishable. Galls of the two species have the same general form except that that of pilosa has a thick covering of hair (Fig. 2e), while that of clavata is smooth (Fig. 2g),

This species forms an elongate rosette gall on the stems.

This species forms a podlike, elongate, bilaterally flattened gall on the under surface of the leaf (Fig. 2d). 

This species forms a short, socketed stem gall (Fig. 1 e).

This species and barbata are indistinguishable, but their galls are distinctly different. Both are squat leaf galls with a rugose, hairless patch at the base.
That of villosa is covered for almost its entire length with long hair (Fig. lb), while that of barbata is covered for only slightly more than half its length with short hair.

The Asphondylia (Cecidomyiidae, Diptera) Of Creosote Bush