Kinsey: Studies of Cynipidse 



61 



Toronto (Beutenmuller, 1914, Bull. Brooklyn Ent. Soc, IX, p. 

 88, pi. V, figs. 6-8) ; I have not seen this material, but feel 

 certain it must represent at least distinct varieties, for the 

 faunal area in which true fiisiformans occurs is limited to a 

 small part of Colorado. 



Diplolepis fusiformans variety minuta, new variety 



FEMALE. — Shows the following- characters in addition to those 

 common to all varieties of the species: Mouthparts dark rufous to 

 black, darker than in mendocinensis ; first two segments of the antennas 

 very dark brown, averaging darker than in mendocinensis ; lateral lines 

 not smooth, not very evident; abdomen dark brown rufous, almost black 

 posteriorly and ventrally; second segment covering a half or somewhat 

 more of the abdomen; hypopygium relatively larger than in fusi- 

 formans; legs yellow rufous, the coxae basally, parts of femora, and 

 the hind tibiae dark brown; areolet very small or closed; length 1.0- 

 1.5 mm. 



MALE. — Differs from the males of other varieties as follows: Lat- 

 eral lines not smooth, barely evident; second segment covering only 

 about half of the abdomen; legs almost black on the coxae and femora 

 and the hind tibiae; areolet almost closed; length 1.5 mm. 



GALL. — Differs from the galls of other varieties in having the 

 swelling only slightly larger than the stem, not over 20. mm. in length 

 and 3.5 mm. in diameter, hardly noticeable except by the distorted bark; 

 larval cells few, usually not over four in a gall. 



RANGE. — California: San Bernardino Mountains (Little Bear 

 Lake). Probably confined to the neighborhood of this range. 



TYPES. — 11 females, 2 males, 60 galls. Holotype female, paratype 

 female, and galls at The American Museum of Natural History; para- 

 type females and galls at Stanford University and the U.S. National 

 Museum; paratype galls at the Museum of Comparative Zoology and 

 the Philadelphia Academy; paratype females, males, and galls with the 

 author. Labelled San Bernardino, California; January 31, 1920; Kinsey 

 collector. 



This is the smallest cynipid I know inhabiting roses. The 

 insect is quite distinct from variety fusiformans, but closely 

 resembles mendocinensis. It is reasonable that the two Cali- 

 fornia varieties should be more closely related to each other 

 than to the Colorado variety. The galls of the two California 

 varieties also more closely resemble each other than they do 

 the Colorado variety, but are very definitely different. 



Minuta galls are almost unnoticeable, so little do they 

 distort the stems. They are located usually toward the tips of 

 the stems, and sometimes kill the stem beyond. Large larvae 

 were in the galls on January 31, 1920, and emerged at some 

 later date. 



