360 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 94 



reared in 1933 from Maci^ocentnis sp. ; 1 from ISIoorestown, N. J., 

 reared January 2, 1932, from the egg cluster of an unidentifiod spider ; 

 1 from Staunton, Va., reared in 1932 from a chrysopid cocoon; and 

 1 from Broadway, Va., reared August 17, 1932, from an unidentified 

 ichneumonid cocoon. Other paratypes inckide 1 from Greer, S. C, 

 collected September 20, 1930, by J. O. Rowell ; 1 from Clemson, S. C, 

 taken August 29, 1932, by W. C. Nettles ; 2 females from Tucson, Ariz., 

 reared from the creosote bagworm, Thyndopteryx meadii (Edwards), 

 by R. H. Crandall, January 12, 1939 ; and 4 females and a single male 

 (allotype) said to have been reared from Anarsia UneateUa Zeller, at 

 Brigham, Utah, August 25, 1942, by C. J. Sorenson. 



11. ARACHNOPHAGA ALDRICHI, new species 



Female. — Length 3,1 mm. Agrees with ahstrusa except in the fol- 

 loAving particulars: Frons above scrobicular depression faintly re- 

 ticulated, not perfectly smooth and polished; flugellum black, scape 

 testaceous; pronotum dorsally, concave posterior portion of mesoscu- 

 tum, inner faces of scapulae, usually the greater part of prescutum, 

 dorsal portion of axillae, more or less of scutellum apically, mesopleu- 

 ron anteriorly, mesosternum, propodeum, and metapleuron dark 

 brownish with some metallic greenish reflections; legs varying from 

 mostly dark testaceous to dark brown, the intermediate tarsus pale, 

 except at apex, and the posterior tarsus more or less pale with the basal 

 and apical segments dark; forewing strongly infuscated acrt)ss middle, 

 the infuscated area dark with a narrow band of paler cilia along its 

 proximal border ; posterior wing hyaline ; abdomen black with a broad 

 base more or less brownish testaceous; ovipositor exserted half the 

 length of abdomen and testaceous. Readily distinguished from ficea 

 by the longer marginal vein, which is more than three times as long 

 as stigmal and by the markedly lighter color, especially of the head. 

 Distinguished from frontalis by the less strongly sculptured frons, by 

 the longer ovipositor, by the bare eyes, and by the more extensive teS' 

 taceous coloration. 



Male unknown. 



Type locality. — Chesapeake Beach, Md. 



Type.—V.^.^M. No. 5G654. 



Remarks. — The species is named in honor of the late Dr. J. M. Aid- 

 rich, who collected the holotype on June 2, 1933, at Chesapeake Beach, 

 Md. Six paratypes, some of which are now imperfect specimens, were 

 collected at Hagerstown, Md., July 7, 1914, by J. A. Hj'slop, and bear 

 the number P135. Other paratypes are 1 from Cranford, N. J., col- 

 lected August 5, 1926, by F. M. Schott; 1 from Sherborn, M:iss., swept 

 June 10, 1934, by C. A. Frost; and 1 from Mississippi State College, 

 Miss., taken in a cage containing cotton squares, August 25, 1934, by 

 P. M. Gilmer. 



