426 
Indiana University Studies 
range of macrescens individuals may be found with the char- 
acters of pure scelesta or opima, but the mass of the popula- 
tion of macrescens represents an intermediate blending of the 
parental characters. Variable and poorly fused as this aggre- 
gate may be, I feel we should continue to recognize it as a 
taxonomic unit deserving a name for convenience of reference. 
The galls of scelesta are ellipsoidal, those of opima more 
nearly (but not quite) spheroidal. In the galls of macrescens 
the scelesta influence usually dominates, but there is some 
variation in this gall character. 
Felt recorded young galls of this variety (misdetermined 
as hirta) from Minnesota as early as July 23. Weld found 
pupae in galls from northern Illinois early in September. Galls 
which I collected at Delphi in northern Indiana on September 
21 (1926) were just beginning to drop to the ground. Many 
of them at that time showed exit holes which indicated the 
emergence of parasites. The cynipids were still larvae in the 
galls on that date. Weld cut living adults from his Illinois 
material as early as the last week of September. Normal 
emergence dates are recorded as follows: October 10 (acc. 
Gillette 1889) ; November 4 and 10 (Kinsey in 1926) ; No- 
vember 9 to 14 (Brodie in U.S. Nat. Mus. ; in 1885 and 1893) ; 
November 14 (acc. Weld 1926) ; November 15 to 30 (Brodie 
in U.S. Nat. Mus.; in 1892); November 4, 16, 19, 20, and 
December 1, 4, 8, 12, 15, 18, 20, 22, and 28 (Kinsey 1926 to 
1928). While the major part of the large series of material 
I have bred emerged in the first half of November, it will be 
seen that many of the insects emerged after December 1 and 
even as late as December 28. All of the adults had previously 
emerged from galls collected at Roachdale, Indiana, on De- 
cember 26 (in 1922) . Some of the many parasites that are to 
be found in these galls emerge before the gall makers in the 
fall, but the majority of the parasites and inquilines do not 
mature until the following May or June. 
Cynips hirta variety hirta Bassett 
agamic form 
Figures 73, 321-322, 385, 429 
Cynips q. hirta Bassett, 1864, Proc. Ent. Soc. Phila. 3: 688. 
Cynips hirta Osten Sacken, 1865, Proc. Ent. Soc. Phila. 4^340, 347, 353, 
359, 378. Bassett, 1870, Trans. Ent. Soc. London:: XV. Bassett, 1870, 
The Ent. 5: 111. Cresson, 1923, Trans. Amer. Ent. Soc. 48: 199. 
