AST. 28 CHALCID FLIES NORTH OF MEXICO BALDUF 41 



(Walsh) on mossy cup oak {Q. maorocarpa) ; I have 3 additional 

 females from Mr. Ainslie taken by him by sweeping alfalfa at Salt 

 Lake, Utah, and bearing AVebster No. 5595, but they are smaller than 

 typical duh'm\ 3 males (66"°') issued from galls of D. globulus (Fitch) , 

 June 27, 1883, the galls received from A. T. Packard, Providence, 

 R. I., on April 7 of the same year; 2 females (66 ''°^) dated March 

 4, 1884, bear no other data ; 1 female labeled " Melrose Highlands, 

 Mass., July 7," and the following Hopkins lots : 5 females and a male 

 (Hopk. U. S. 13686 «), reared April 5, 12, and 29, 1918, by L. H. 

 Weld, from galls of Disholcaspis spongiosa Karsch on Q. minor at 

 one or more of these localities: Thebes, Liberty County, Ga., and 

 Palestine, Trinity, or Houston, Tex.; 1 female (Hopk. U. S. 10774a) 

 reared May 14, 1919, by S. A. Rohwer, from undetermined galls on 

 Q. minor^ at Ironton, Mo.; a pair (Hopk. U. S. 10776a), same 

 collector and locality, reared June 11 (male) and 18 (female), 1919, 

 from galls of D. fasciata Bassett (determined S. A. Rohwer) on Q. 

 ruhra; 1 female (Hopk. U. S. 10777a) reared by S. A. Rohwer, 

 Poplar Bluff, Mo., June 4, 1919, from gall on Q. minor; and 2 pairs 

 (Hopk. U. S. 10777b) , from undetermined galls on Q. minor^ Poplar 

 Bluff, Mo., the males issuing June 18 and July 2, and the females on 

 May 14 and June 26, 1919 ; 5 females and 4 males labeled Worcester, 

 Mass., and Providence and Rumford, R. I., sent me by Doctor Kinsey 

 from the Thompson collection, had been reared from the galls of 

 D. Tnamma (Walsh) and D. globulus (Fitch) ; I have a fine series of 

 20 females and 2 males reared by Doctor Kinsey from galls of D. 

 mamina var. on Q. hicolor at Broadway, N. J., on September 4, 1921. 

 From the collection of the Canadian Department of Agriculture, 

 Ottawa, I have 2 females from bullet galls on mossycup oak \_D. 

 mamma (Walsh) on Q. macrocarpa'] collected by G. E. Sanders at 

 Tampico, 111., on May 15 and 20, and July 26, 1909 ; also one female 

 labeled " on office window. Mar. 3, 1906, J. F." ; and one of each sex 

 reared from the gall of D. globulus (Fitch) at Guelph, Ontario, by 

 T. D. J. 



14. DECATOMA DUBIA RUFOSA, new yariety 

 Plate 1, Figxjbe 13 



Differs chiefly from the typical form of D. dubia Walsh in having 

 the head and thorax almost or entirely reddish yellow. 



Female. — 3 to 4.1 mm. long, colors chiefly rufous and black; head 

 rufous, sometimes vertex and also occiput above more or less dark 

 brown, antennae chestnut-brown; prothorax golden brown to light 

 reddish yellow; mesothorax concolorous with head but sometimes 

 front of prescutum, lower edge of axillae posterior margin of scutel, 

 and margins of dorsal sclerites narrowly black; metanotum and 

 propodeum rufous to almost black ; legs entirely very pale yellowish 



