Kinsey: The Genus Neuroterus 
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of Natural History; paratype females and galls at the U.S. National 
Museum, Stanford University, the Museum of Comparative Zoology, the 
Philadelphia Academy, the Berlin Museum, the British Museum, and 
in the Kinsey collection. Labelled Byron, California; March 19, 1920; 
Kinsey collector. 
Of cupulse: 50 females and many infested acorns. Holotype fe- 
male, paratype females, and galls in The American Museum of Natural 
History; paratype females and galls at Stanford University, the Cali- 
fornia Academy, the U.S. National Museum, the Museum of Compara- 
tive Zoology, the Philadelphia Academy, and the Kinsey collection. La- 
belled Paso Robles, California; March 7, 1920; Kinsey collector. 
Adults emerged from twig galls at Byron on March 21, 
1920, a couple of days after collecting, and from both twig 
and acorn galls on March 7, 1920, at Paso Robles. The twig 
galls which Fullaway had, bred adults on February 15 in 
the laboratory. All of the insects had previously emerged 
from twig galls I collected on March 3, 1920, at Zelzah, and 
March 23 at Three Rivers. Emiergence, then, occurs early 
in the spring before the buds have opened, and it is in these 
closed buds that the insect oviposits to produce the flower 
stem, and leaf vein galls of form pacificus. 
There can be no question of the identity of varians and 
cupulse. I described these as distinct species primarily because 
the galls of the two are so very different that the possibility 
of their identity never was entertained. I never compared 
the two descriptions, and only a revision of the whole genus, 
analyses of subgenera, and the writing of comparative de- 
scriptions, Anally showed me the mistake. This is an indict- 
ment of the publication of miscellaneous new species, and 
justification of the revision of whole groups at a time. 
Varians and cupulse are synonyms, not because the insects 
largely resemble each other, but because detailed examination 
of large series of the types of the two fails to disclose a single 
point of constant, group difference. Insects were emerging 
from both kinds of galls at the same date from the same 
trees at Paso Robles in 1920. 
Here is one of the most remarkable cases known of one 
cynipid producing two or more distinct kinds of galls on 
different parts of the host. Several other cases are pointed 
out in this paper for the genus, but otherwise few cases of 
gall polymorphism are known in the Cynipidse. Varians lives 
either in twigs or acorn cups. In the first instance the galls 
8—25671 
