4 
attack the harder portions. In three or four weeks’ time they have 
attained full growth and present the appearance shown, enlarged, at 
d (fig. 3). The larva now forms in the bud a hollow cocoon-like 
receptacle in which the pupal (f) and afterward the adult condition 
is assumed. The pupal stage lasts from five to eight days, depend- 
ing, as do all these periods, upon the temperature, when the adult 
beetle develops and cuts its way out of the bud. 
The entire life cycle requires only twenty-eight or thirty days. 
In the vicinity of the District of Columbia the first mature insects 
of the new generation begin to issue from the severed buds toward the 
end of May, continuing through the month of June and even in some 
cases into July. The beetles of this new generation sometimes congre- 
. gate on the flowers of the strawberry in immense 
Nl. numbers, as shown in fig. 4. The wild bergamot 
fn or horse-mint (Monarda fistulosa) is also frequented 
by the beetles in like manner. 
After feeding for a few days the beetles disappear 
in quest of suitable places for passing the winter. 
Hibernation evidently begins very early, as the 
beetles are seldom seen after the middle of July. 
Our observations indicate only a single generation 
annually. 
The adult beetles often perforate the buds for the 
sole purpose of feeding, though they feed also upon 
the pollen in the flowers and upon the petals. 
Under ordinary circumstances they do not attack 
the foliage, and never the fruit. 
NATURAL ENEMIES. 

Four species of hymenopterous insects are para- 
ee) lant showing Sitic_on the strawberry, weevil, and/to arcertaimpox 
weevils at work—natu- tent help to reduce its numbers, but they are use- 
ral size (from Riley). ; eet 5 mae Z 
ful only as they limit the generation that hibernates 
and which may or may not survive in sufficient numbers to be trouble- 
some in the ensuing year. ‘The species thus far bred from severed buds 
are Calyptus tibiator, Bracon anthonomi, Catolaccus anthonomi, and 
CO. incertus. 
Two species of predaceous ants have also been observed actively 
engaged in destroying the larvee within the buds, and where ant hills 
happen to be present in strawberry beds it is not probable that many 
beetles would develop from the buds. The species of ants observed 
are Formica rufa and Aphenogaster fulva. 
No insect, bird, or other animal has yet been seen to prey upon the 
adult beetles. Fowls, even chicks, are of no service whatever, as they 
roam through infested patches of berries without offering to molest the 
weevils, which are so small and so quick as apparently to entirely escape 
their watchful eyes. 
REMEDIES. 
The strawberry weevil is an extremely difficult insect to combat. 
The very nature of the insect and its life economy enable it to evade 
most measures that are in successful use against leaf-feeding species. 
