XXXI, '20] ENTOMOLOGICAL NEWS 26l 



OnScoliabicinctaFab. and Scolia undata Klug 

 (Hymenoptera, Scoliidae). 



By C. S. Brimley, Division of Entomology, North Carolina 

 Department of Agriculture, Raleigh, N. C. 



On looking over our specimens of S. hicincta and S. undata 

 I find that they grade into one another and that no definite 

 line of demarcation can be drawn between them. 



In addition to the usual white cross bands on the second 

 and third abdominal segments above, which may be without 

 any interruption whatever, even in otherwise typical undata, 

 there are present in two- thirds of the males examined and 

 in one-third of the females, white markings of some sort on 

 either the pronotum, post-scutellum, first abdominal segment 

 above or second abdominal segment below, or on all of these 

 or in any combination. 



The spots on the pronotum are usually a small round spot on each 

 side in front; one specimen, however, has a spot on only one side and 

 another has an enlarged transverse wedge-shaped spot on each side. 

 Present in five males. 



The marking on the postscutelluni is usually a small roundish dot, 

 elongate in one specimen. Present in nine males and three females. 



The marking on the first abdominal segment is either a roundish dot 

 or a transverse stripe; in the latter case it may be either short and narrow, 

 extending on about the middle fourth of the segment, or it may be broader 

 and extend right across the segment. In two cases there is a roundish 

 dot on one side of the middle, instead of in the middle. Present in some 

 form in twenty-seven males, and three females. 



On the underside of the second abdominal segment there is, in seven- 

 teen males, a roundish or oval spot not far from the lateral margin of the 

 segment. These spots vary a good deal in size and but little in shape. 



The following table shows the number of specimens showing the vari- 

 ous combinations of the above markings: 



With usual white stripes on segments 2 and 3 only, males 16, females 11. 



With additional markings as below: males females 



1 A spot or stripe on seg. i above only 9 2 



2 A pair of white spots on seg. 2, below only i o 



3 A white dot on postscutelluni only 2 2 



4 On seg. I above, and seg. 2 below only 10 o 



5 On seg. I above, seg. 2 below and postscutellum only, i o 



6 On seg. i above, seg. 2 below, postscutellum and pro- 



notum 3 '^ 



