82 PROCEEDINGS OF THE NATIOXAL MUSEUM vol. 08 



Habitat. — The type material was collected at Arlington, Texas, 

 November 3, 1917, when the galls Avere still dropping to the ground. 

 On December 1, 1919, living flies (that would probably have emerged 

 in spring of 1920) were cut from the galls. Some of the same lot 

 of fresh galls Avere sent to William Beutenmueller, Avho reared adults 

 January 10, February 14, 15, 20, 21, 1919, and more in February, 

 1920. Paratype flies were cut out December 1, 1919, from galls 

 collected at Texarkana, Ark., in October, 1917. The galls have been 

 collected also at Webster Groves, Poplar Bluff, and Ironton, Mo.; 

 Hoxie, Little Rock, and Hot Springs, Ark.*; Palestine, Cuero, and 

 Austin, Tex. ; Cottondale, Fla. ; Wasliington, D. C. ; Falls Church, 

 Va. Galls collected at Washington in late October, 1923, gave 

 adults February 22, March 1, 14, 17, 1925, and these have been in- 

 cluded among the paratypes. 



ANDRICUS RUGATUS. new species 



Female. — Black; mandibles red ; antennae and parts of legs brown- 

 ish. Head coriaceous with setigerous punctures; from above trans- 

 verse, as broad as thorax, occiput concave, cheeks broadened behind 

 eyes; from in front broadest above level of antennae, median ridge 

 from antennae to clypeus, facial area one and three-tenths times as 

 broad as high, malar space 0.4 eye, antennae 13-segmented, lengths 

 as (scape) 13 (width 6) : 7: 15(4) : 11 : 8 : 7 : G: G : 5 : 5 : 5 : 5 : 11(G). 

 Thorax sparsely pubescent, bare spot on mesopleura and between 

 parapsides posteriorly. Pronotum with parallel ridges on sides. 

 Mesoscutuui coriaceous. })arapsidal grooves narrow, smooth, not 

 quite reaching pronotum, separation behind five times the width 

 of a groove, Scutellum rugose, smoother just back of the well se])a- 

 rated pits which open on to disk behind. Carinae on ])i-opodeuni 

 nearly straight, converging above. Tarsal claws with tooth. Wing 

 hyaline, pubescent, ciliate, veins brown, second abscissa of radius 

 angled, areolet reaching one-fifth way to l)asal, cubitus indistinct. 

 Abdomen shorter than liead and thorax, length to lieight to width 

 as 28:26:19, lengths of tergites along dorsal curvature as 75:23: 14: 

 1:3:7, second Avith sparsely })ul)escent patches at base, its hind 

 margin making angle of 60" Avitli long axis of abdomen, ventral 

 spine tapering, in side vicAV five times as long as broad, directed 

 almost straight backAvard. Using Avidth of head as a base the length 

 of mesonotum ratio is 1.2, antennae 1.8, ovipositor 2.5, Aving 3.G. 

 Length, 2.8-3.1 mm. AA'crage of 4 specimens, 3.0 mm. 



Tt/pe.—Cnt. Xo. 27214, F.S.N.M. Type and one paratype. Para- 

 type in Field Museum. 



Host. — Quei^cus lyrata. 



