Kinsey, Ay res: Varieties of a Gall Wasp 149 



be the same as R. tuberculator Cockerell" (Bull. Amer. Mus. 

 Nat. Hist., XXIII, p. 643) ; the two are varieties of one species, 

 but distinct. 



Diplolepis tuberculatrix variety coloradensis, new variety 

 form coloradensis new form 



FEMALE. — Is distinguished from the other varieties of the species 

 as follows: General color bright rufous, brighter than in variety tuher- 

 cvlatrix ; head bright rufous with small dark patches between the com- 

 pound eyes and the mouth; first three or four segments of the antennae 

 bright rufous, remaining segments black; thorax light rufous; median 

 groove not deep but extending well toward the pronotum, distinctly 

 longer than in xerophila; scutellum almost evenly bright rufous; meso- 

 pleurag rufous, edged black; abdomen bright rufous, darker terminally; 

 first abscissa of the radius angulate; cubitus hardly continuous; radial 

 cell distinctly open; areolet moderately large, larger than in variety 

 tuberculatrix; length 2.5-4.0 mm., averaging larger than in variety 

 tuberculatrix, but distinctly smaller than in tumida. 



MALE. — Differs from the male of other varieties as follows: Almost 

 wholly black except on the mouthparts; median groove extending well 

 forward; areolet of moderate size; cubitus not continuous; radial cell 

 mostly open; length 2.0-3.5 mm. 



GALL. — Very similar to the galls of other varieties; dark purplish 

 brown, mostly smooth, w^th a few% scattered, moderately short spines; 

 many of the galls are unusually small, tho some of them measure up 

 to 28. mm. in diameter. 



RANGE. — Colorado: Glenwood Springs. 



TYPES.— 62 females, 90 males, and 33 galls. Holotype female, 

 paratype adults, and galls at The American Museum of Natural History; 

 paratype adults and galls at Stanford University, the U.S. National 

 Museum, the Museum of Comparative Zoology, the Philadelphia Academy, 

 and with the author. Labelled Glenwood Springs, Colorado; April 22, 

 1920; Kinsey collector. 



The characters of this variety are intermediate between 

 those of varieties tiiberciikitrix and tumida, which range in 

 either direction from Glenwood Springs, but series of indi- 

 viduals do not show variation toward other varieties. The 

 type locality is in a rugged mountain region, with many 

 barren peaks, and desert and alkaline plateaus, lying west of 

 the high elevations of the Continental Divide. In such a coun- 

 try a host of distinct varieties may well be isolated. The most 

 interesting phenomenon shov\'n by the variety is the common 

 occurrence of a black form ; this is described in the next para- 

 graphs. Because of the identity of the males of the two 

 forms, we have not been able to assign individuals of that 



