Quercus douglasii, durata, garryana
Leaf galls, detachable
Cylindrical spangle, 2 mm in dia, 2-3 mm high. Fig 135.

Fig 135. Q-dumosa, durata, douglasii, engelmanni [sic, not the same listings as in the host index] • Slightly inrolled at rim. Adults were reared April 5 but not described as they could not be separated from the maker of a similar gall in Arizona.

Phylloteras cupella

Quercus arizonica, oblongifolia, reticulata [rugosa], subturbinella [turbinella]
Leaf galls
Detachable
Fig 88 and 173.

Trigonaspis cupella, new species

Host. — Quercus grisea, undulata, arizonica.

Gall (fig. 39). — A small black cup-shaped spangle scattered on upper and under surface of leaf in the fall and dropping with the leaf. From one to a dozen on a leaf. Galls measure up to 2.6 mm. in diameter and 2 mm. high, the exit hole in the shallow cup at apex, the mouth of the cup xometimes slightly constricted by the inrolled edges of the thick wall, the larval cell lying transversely at base of gall.

Habitat. — The type is selected from material on Quercus grisea from Magdalena, N. Mex., where the galls were very common in November 1921. Paratypes are from galls on Q. undulata at Tijeras in the Sandia Mountains. Flies emerged from both lots of galls from January 24 to February 6, 1922. Other paratypes are from Q. arizonica from the Mule mountains and from Oracle in the Santa Catalina Mountains, Ariz. Galls were observed on these hosts at Nogai Canyon south of Socorro, Hillsboro, Kingston, and in Burro mountains, N. Mex., and at Prescott, Ariz. Similar galls were observed on Q. oblongifolia in the Hiuichuca and Patagonia Mountains.

Phylloteras cupella
[Page 197]

This cynipid wasp induces urn-shaped, monothalamous galls on the underside of leaves of scrub, leather, blue, and Engelmann oaks.

Hosts:
Quercus berberidifolia
Quercus durata
Quercus douglasii
Quercus engelmannii
several southwest oaks

Phylloteras cupella

Hosts: Quercus arizonica, grisea, undulata

Small (2.6 mm) cup spangles on underside of leaves of Quercus arizonica, grisea, undulata

Distr: AZ, NM