Disholcaspis spissa

[Photos of this gall appear on page 10 of the pdf]

Disholcaspis spissa

Quercus arizonica, havardi, reticulata [rugosa], subturbinella [turbinella]
Stem galls
Detachable
Fig 54.

Disholcaspis spissa, new species

Hosts: Quercus turbinella, arizonica, fendleri, and havardi

Gall: Single or in dense clusters on twigs or rarely on the peduncle. Yellowish when young, brown with a dull matte surface when mature. Sessile by a broad base, rounded and darker at apex, 6-7 mm high. Larval cell basal, its wall thin, not free but imbedded in the dense cellular tissue of the distal part of the gall which is not cavernous as in D edura.

Habitat: NM, AZ, OK

Many adults had emerged by December 31 and adults continued to come out until January 14.

Disholcaspis spissa
Honeydew-gall wasp
[Page 173]

Hosts: Quercus oblongifolia, arizonica, turbinella

Galls of this wasp are quite like those of D eldoradensis in California.