Holcaspis colorado

Cynipidae

Disholcaspis

Quercus gambelii

Arizona

Colorado

Nevada

New Mexico

Oklahoma

South Dakota

Texas

Utah

Wyoming

Disholcaspis colorado (agamic)

Holcaspis colorado n. sp.

Gall.--I have two small twigs, each containing a cluster of three galls that resemble small, dark colored galls of H rugosa [Disholcaspis quercusglobulus]. The galls are slightly drawn out into a blunt point; the largest measures three-eighths of an inch in length by five-sixteenths of an inch in breadth. The substance of the galls is more dense than in rugosa or globulus, and the central cell does not separate from the surrounding cellular tissue.

Habitat: CO

Colorado Cynipidae--Part IV

Holcaspis colorado Gillette

Gall. In clusters on the twigs of a species of oak (Quercus, sp.). Globular and drawn out into a blunt point at the apex. Hard and woody and resembles small dark colored galls of H. rugosa. The substance is more dense than in rugosa and gobulus and the central cell does not separate from the cellular tissue. Length 10 mm. Width 8 mm. 

Habitat. Colorado (Manitou). 

This species is unknown to me and the type of the adult and gall are with Prof. C. P. Gillette. It was described from a single living female which was cut from a gall October 31, 1892.

The species of Holcaspis and their galls