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Indiana University Studies 



closely and distinctly punctate; not produced dorsally, the second seg- 

 ment not covering one-third the abdomen, its edge only slightly oblique. 

 LEGS: Brownish, the tarsi yellowish with dark tips, the middle tibiae 

 and the hind tibise and femora almost black; hairy; tarsal claws weak, 

 simple. WINGS: Very clear, set w4th only minute hairs; edg'es only 

 very short ciliate; veins brownish black, cross veins heaviest; areolet 

 of moderate size or sm^aller; cubitus fine, reaching- only half way to the 

 basalis; radial cell moderately short, open, the second abscissa of the 

 radius somewhat curved; the first abscissa arcuate, deeply and widely 

 infuscated; with a light brown cloud extending over the areolet and a 

 similarly colored, large spot below the areolet. LENGTH: 1.5-1.7 mm. 



GALL. — A slight but distinct swelling of small roots. Poly- 

 thalamous. Galls gradual enlargements from the stems, elongate, aver- 

 aging 20. mm. long- by 4. mm. wide, often larger, covered with natural 

 or slightly roughened bark. Internally woody, but the tissue irregular, 

 with the larval cells closely clustered, the lining not separable nor hardly 

 distinct, each cell spherical, about 1.0 mm. in diameter. On roots of 

 Querciis virginiana. 



RANGE.— Texas: Austin (Patterson). 



TYPES. — 149 females and 4 galls. Holot>i)e female, paratype fe- 

 males, and gall in The American Museum of Natural History; paratype 

 females and galls in the U.S. National Museum and with the author; 

 paratype females at the Museum of Comparative Zoology, the Phila- 

 delphia Academy, and Stanford University. Labelled Austin, Texas; 

 Q. virginiana; Patterson collection numbers 18a and 18b. 



One of the galls is constricted into two parts, the parts 

 bent at an angle; the other galls are straight, undivided; the 

 two types of galls give the same kinds of adults. These galls 

 contained live adults in December ; insects emerged on Febru- 

 ary 9. It is not impossible that adults are mature in the galls 

 over the winter, not emerging until early in the following 

 spring. Similar but much smaller swellings at the bases of 

 the petioles (Patterson collection number 155) had adults 

 emerge on Dec. 27 which appear exactly identical with those 

 from the root galls. Some sort of alternation of generations 

 may be involved here, but it is not unlikely that the species 

 will produce galls on various parts of the plant, not being con- 

 fined to the roots only. 



Cynips mirabilis, new species 



Holcasjns nmculipennis Beutenmuller (in part), 1909, Bull. Amer. Mus. 



Nat. Hist., XXVI, p. 43, pi. IX, figs. 2, 3. 

 Cynips juaculipennis Fullaway, 1911, Ann. Ent. Soc. Amer., IV, p. 344. 



Felt (in part), 1918, N.Y. Mus. Bull., 200, p. 100, fig. 63 (2, 3). 

 Amphibolips quercus-inanis Trotter (error), 1910, Boll. Lab. Portici, 



V, p. 101. 



(Not (!) Holcaspis maculipennis Gillette, 1894, Can. Ent., XXVI, p. 236.) 



