422 
Indiana University Studies 
This is the more southern variety of hirta in the northern 
Middle West, occurring in Indiana and Illinois where we might 
expect an Ozark variety, altho we do not have collections of 
the species from localities within the Ozarks proper. This 
appears to be the form which, hybridizing with the northern 
scelesta, gave rise to the hybrid variety macrescens, and segre- 
gates of opima consequently occur on occasion as far north 
as macrescens extends. Quite different are the nearly pure 
populations of opima in Illinois and southern Indiana. Both 
insects and galls of typical opima are about as distinct from 
scelesta as anything in the present species ; but the occurrence 
of the hybrid macrescens in between provides such a grada- 
tion from opima to scelesta that determinations of anything 
less than large series of these insects cannot be more than 
approximations to natural interpretations. 
Our emergence records for this insect are November 4, 16, 
19, and 20, and December 1, 4, 8, 12, 15, 18, 19, 20, 22, and 28. 
Cynips hirta variety scelesta, new variety 
agamic form 
Figures 72, 383, 427 
FEMALE. — Almost entirely brownish-piceous and black, the anten- 
nae brown basally; lateral lines absent; wings reduced to stubs 0.21 of the 
body in length; the abdomen with only scattered hairs on the segments 
posterior to the second; body 1.5 to 2.5 mm. in length, the insect very 
small and slender with a very much reduced thorax and compressed 
abdomen. Figures 383, 427. 
GALL. — Always elongate ellipsoid; up to 4.0 mm. in length; the 
faceted surface quite smooth in appearance; on leaves of Quercus macro- 
carpa. 
RANGE. — Michigan: Wayland (types, Kinsey coll.) Big Rapids 
and Tekonshah (Kinsey coll.). 
Indiana: Morocco, Romney, Delphi, and Mongo (Kinsey coll.). 
Illinois: Seneca (Kinsey coll.). 
Centering on the very northern rim of the range of Q. macrocarpa, 
probably from New York to Minnesota. Remnants of the species scat- 
tered southward (by the Pleistocene glaciation) thruout Indiana and 
Illinois. Figure 72. 
TYPES. — 144 females and many galls. Holotype and paratype fe- 
males and galls in the Kinsey collection. Paratype females and galls 
in the American Museum of Natural History, the Museum of Compara- 
tive Zoology, the U.S. National Museum, and the California Academy. 
Labelled Wayland, Michigan; galls October 5, 1927; insects November 
20 and December 8, 1927; Q. macrocarpa; Kinsey collector. Individuals 
