ART. 23 REVISION OP MACEOCENTRUS MUESEBECK 35 



testaceous ; mesosternum tinged with brown ; legs yellow, usually very 

 pale at base ; wings entirely clear hyaline ; stigma uniformly brown, 

 only very indistinctly paler at base ; dorsum of abdomen mostly black, 

 the apical segments a little paler. 



Male. — Not differing in any important respect from the female. 

 The antennae of allotype are 47-segmented ; the scape is somewhat 

 swollen, distinctly larger than in the female. 



Type.—V.S.'^M. No. 43503. 



Type locality. — Harriman, Tenn. 



Host. — Laspeyresia molesta Busck. 



Remarks. — Described from 12 females and 14 males reared by H. 

 G. Butler, September, 1930. The national collection contains, in 

 addition to the type series, one specimen from L. molesta., taken at 

 South River, N. J.; three reared from Laspeyresia funehrana 

 Treitschke at Washington, D. C. (W. B. Wood) ; also one reared 

 from Coloeophora malivorella Riley at the same locality; several 

 from the last-mentioned host taken at Morgantown, W. Va. (E. 

 Gould) ; a series from L. molesta collected at several different points 

 in Ohio; several specimens reared from Aci^ohasis caryivorell-a 

 Ragonot at College Station, Tex. (S. W. Bilsing) ; and one from 

 Acrohasis hehescella Hulst at Victoria, Tex. I have also seen two 

 specimens reared from L. molesta^ at Chambersburg, Pa., by J. O. 

 Pepper and J. R. Stear, respectively. 



There is much variation in color, the thorax and abdomen ranging 

 from entirely blackish dorsally to completely yellow, and in the 

 palest specimens the stigma is usually yellow rather than brown. In 

 the specimens from Texas, which are the palest, the eyes and ocelli 

 are a little larger than in more northern material. 



23. MACROCENTRUS UTILIS, new species 



Most closely resembling laspeyresiae., but differing especially in 

 having the second tergite completely, and the basal half of the third, 

 closely aciculate, in the more strongly elevated prescutum, in the 

 more strongly transverse head, and in the more uniform yellowish- 

 ferruginous color. 



Female. — Length 7.5 mm. Head strongly transverse, temples and 

 cheeks narrow, the cheeks, viewed from the side, not wider than the 

 temples ; face rather large, much broader than long, very shallowly 

 sparsely punctate ; eyes large, prominent ; malar space about as long 

 as basal width of mandible; clypeus quite strongly convex, anterior 

 margin truncate; distance from clypeal foveae to eyes about equal 

 to length of clypeus ; lateral ocelli usually not distinctly larger than 

 median ocellus; longest segment of maxillary palpus a little longer 

 than second segment of antennal flagellum ; apical segment of labial 



