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.

- LH Weld: (1957) New American Cynipid Wasps From Oak Galls^©

Reference: https://www.biodiversitylibrary.org/item/114064#page/144/mode/1up