ART. 10 GALL-INHABITING CYNIPID WASPS WELD O 



The succulent stem galls of the sexual generation on the new 

 growth were seen at Evanston and Fort Sheridan, 111., and Michi- 

 gan City, Ind,, the adults emerging at Evanston June 16-25, 1913; 

 at Michigan City June 2G, 1906. At Apple Orchard Camp in Bed- 

 ford County, Va., adults of both sexes Avere emerging on July 1. 

 Brodie found the new galls nearly full grown on June 9 about a 

 month after the agamic flies had issued. On May 5, 1892, he col- 

 lected galls on what seems from both notes and specimens to be the 

 new growth and from INIay 24 to June 1 reared 1,431 males and 341 

 females. 



NEUROTERUS DISTORTUS Bassett 



The writer has collected galls of this species on Quercus Mcolor 

 at Evanston, Wilmette, Glencoe, and New Lenox, 111, The flies issue 

 during the first two weeks of May. A similar gall perhaps of this 

 species was observed on the rock chestnut oak, Q. montana^ near 

 Alexandria, Va. 



NEUROTERUS ESCHARENSIS, new species 



Agamic female. — Piceous. Head coriaceous but shining, a few 

 short white hairs on face; from above transverse, length to 

 width as 12 : 28, occiput not concave, cheeks broadened behind 

 the eyes which are not protuberant; from in front broader 

 than high, facial area square, malar space one-fourth e.ve 

 with groove, antenna 12-segmented, lengths as (scape) 23 (width 

 12) : 20 (13): 28 (7): 22: 20: 20: 18: 18: 16: 16: 16: 26 (10), last with- 

 out trace of subdivision. Pronotum microscopically coriaceous on 

 sides. INIesonotum with a few short scattered hairs more noticeable 

 on disk, no trace of parapsidal grooves. Wings hyaline, pubescent, 

 and ciliate, first abscissa of radius angled and at right angle to 

 second which is nearly straight and nearly parallel with free part 

 of subcosta making the open radial cell about seven times as long 

 as broad at base. Areolet reaching one-fifth way to basal, cubitus 

 fainter but reaching basal on its lower third, second intercubitus at 

 right angles to fore wing margin; a faint cloud about break of 

 anal. Hind tibia and tarsus equal, claws simple. Abdomen slightly 

 longer than thorax, higher than long, compressed, lengths of tergites 

 about as 19 : 9 : 7 : 5 : 5, ventral valves not evident, ventral spine short, 

 ovipositor protruding. Using width of head as a base the length 

 of mesonotum ratio is 1.1, antenna 1.9, ovipositor 3.9, wing 4.5. 

 Length, 1.0-1.6 mm. Average of 18 specimens, 1.25 mm. 



Type.— Cat. Xo. 27180, U.S.N.M. Type and 7 paratypes. Para- 

 types in Field and American Museums. 



/lost. — Quercus hicolor. 



