March, i 9 ig.] \v EISS AND Dickerson: Insects of Rose-Mallow. 39 



fourth and fifth sternites each with a conspicuous row of closely set, stiff, 

 brown bristles, near the middle of the segment at the sides and approaching 

 the posterior margin medially where the bristles become shorter and less 

 regularly placed. 



Length of male genital armature, 2 mm.; armature strongly asymmetrical 

 as shown one Plate IX. 



5. Differs from the male by having a less strongly developed clypeal 

 notch, smaller eyes, a shorter antennal club (5.3 instead of S as in the male), 

 and a more convex under line of the abdomen. 



Type: o*. Halsey, Nebraska, June I, 1912 (J. T. Zimmer). 



Allotype: ?. Holt County, Nebraska. 



Paratypes : 6 <$, 1 ?. 



Nebraska, Halsey 4 c? ; Holt County 2 6". 

 Kansas, Mendora 1 ?. 



OcJirosoma is one of the more easily recognizable species of 

 Serica because of its unusually pallid color, shining surface, deep 

 and obtuse clypeal incisure, strongly reflexed anterior margin of 

 clypeus, conspicuous abdominal bristles and distinctive structure 

 of the male genital armature. 



INSECTS OF THE SWAMP ROSE-MALLOW, 



HIBISCUS MOSCHEUTOS L., IN NEW 



JERSEY. 



By Harry B. Weiss and Edgar L. Dickerson, 



New Brunswick, N. J. 



In 1907 when the writers were observing the buprestid beetle Rhcc- 

 boscelis tenuis Lee, on the swamp rose-mallow (Hibiscus moscheutos) 

 growing in a nursery, they noted other insects infesting this plant 

 and it appeared to them that observations on these insects might 

 prove interesting. Accordingly, a study of the insects associated 

 with this plant was undertaken. Some of the observations were 

 made in 1917, but the major portion during the season of 1918. The 

 results are given in this paper and it might be added that they were 

 carried on incidental to other work and were made on plants in some 

 of the nurseries as well as those growing on the marshes in their 

 natural environment. 



