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Indiana University Studies 
FEMALE. — In color black and dark rufous; antennae dark brown, 
only the first two segments light rufous; mesonotum sparsely, shallowly 
punctate and sparsely hairy, nearly smooth over much of the area, 
rougher anteriorly; anterior parallel and lateral lines very obscure or 
nearly lacking; median groove absent; scutellum quite a little longer 
than broad, finely rugose, its median ridge distinct but not prominent; 
foveal groove rather broad, quite smooth and shining at bottom, more 
nearly divided into foveae than in some of the related varieties; abdo- 
men very dark rufous to black, sometimes with limited, brighter rufous 
areas basally and ventro-posteriorly; the abdomen hardly elongate, the 
second segment somewhat tongue-shaped, covering not more than two- 
thirds of the abdomen; legs bright rufous, a little darker on the coxae 
basally and on the hind femora and tarsi; wings long, about 1.30 times 
the body length; areolet of moderate size or a little larger or smaller; 
cloud on the first abscissa rather limited and light in color; tip of the 
radius not at all enlarged; body of moderate size, 2.5 to 3.8 mm., averag- 
ing 3.2 mm. in length (acc. Weld’s record of 88 specimens). Figure 
386. 
GALL. — Finally naked, flesh-colored to light brown, with little solid 
material; rounded or flattened basally, occurring singly on the leaves 
of Quercus undulata varieties (Q. fendleri, Q. rydbergiana , etc.). 
RANGE. — New Mexico: Las Vegas Hot Springs (acc. Cockerell 
1903; also acc. Weld 1926). Wagon Mound and Shoemaker (acc. Weld 
1926). Figure 51. 
Probably confined to a southern Rocky Mountain area in southern 
Colorado and New Mexico, probably not extending south of the Sandia 
Mountains in New Mexico. 
TYPES. — One damaged and immature female and a piece of a 
gall; in the U.S. National Museum. From near Las Vegas Hot Springs 
at about 7,000 feet, New Mexico; the insect cut from the gall March 21, 
1903; Q. rydbergiana; T. D. A. Cockerell collector (?). 
The present re-descriptions are made from this type material and 
a series collected by Weld at the type locality. 
This is the southern Rocky Mountain variety of mellea. It 
occurs on at least two and probably several of the other oaks 
which are hardly more than varieties of Q. undulata. 
Weld found mature galls in October and obtained emerging 
adults on December 31 (1921), January 4 and 20, and Feb- 
ruary 1 and 6 (in 1922, from galls collected in the fall of 1921) , 
most of the emergence occurring at the later dates. From 
galls collected in the fall of 1922, Weld secured adults on 
February 16, 1923. Cockerell cut the type female (dead or 
alive?) out of a gall on March 21. 
Cockerell and later workers have placed this insect in our 
present genus (known to them as Dryophanta or Diplolepis ) , 
