THE INSECTS OF NEW JERSEY. 
337 
SERSCA MacL. 
S. vespertina Gy 11. Throughout the State V, VI; common. 
S.jricolor Say. Ft. Lee List. (Bt); Ocean Co., on scrub oak VI (Sm); 
DaCosta, Atco (Li); Atlantic Co. (W); local. 
S. sericea Ill. Throughout the State V, VI; common. 
S. trociformis Burm. Ft. Lee List. (Bt); throughout the pine barrens 
.alTV and early VI, getting only a little into the Delaware Valley 
region. 
MACRODACTYLUS Latr. 
Fig. 126.—The “rose-bug,” Macrodactylus subspinosus: a, adult beetle'; b, larva; e, pupa; 
c, d, structural details, all enlarged; f, grape leaf showing injury and 
beetles at work—natural size. 
M. subspinosus Fab. The “Rose-bug” or “Rose chafer”; common 
throughout the State, often coming in such hordes as to destroy the 
blossoms of roses and other plants blooming in June, and in vine¬ 
yards in some sections utterly destroying the grape crop by eating 
the blossoms. They also eat into a variety of fruits, including apples 
and do great mischief in that way. The larvae feed on the roots 
of grasses and other vegetation in waste land and are beyond reach 
of destructive measures. Practically, spraying plants to be protected 
with heavy doses of arsenate of lead or collecting the adult beetles 
as they come on, by collectors adapted to the special work, are our 
only resorts. 
M. angustatus Beauv. Jamesburg VII, 4 (Bt); Riverton V, 28 (GG); 
Anglesea VI, VII, on oak (div). 
