Bulletin 151, Truck and Garden Insects


 NEGRO BUGS (Corimelaena pulicaria and Pangaeus bilineatus)
 These are small, roundish, shining, black bugs which are
very common on blackberries and dewberries and are found on
strawberries. They damage the berries by sucking the juices,
but more by the odor they leave on them. This is very nauseous,
similar to that of bed bugs.
 The adult bugs are about 1/ of an inch long and black with a
white stripe on each side. The middle piece of the back (scutel-
lum) is enlarged to cover the entire abdomen, making the in-
sects look more like beetles than bugs. The sucking mouth-
parts, however, readily distinguish them. The young are brown
with yellow legs.
 In Michigan, where the insects are sometimes very injurious
to celery, it has been found that a spray of crude carbolic acid
is very effective in driving them away. A tablespoonful is used to
2 gallons of water. A dust made by adding a half pint of the
acid to a bushel of lime or plaster was also found effective.
Like the tobacco extracts, they should be used just after the


Vd
I~P~.


 '


FiG. 105.-Field cricket (
 lus assimilis). Slightl
 large. (From Fla.
 Exp. Sta. Bul. 42.)
Another remedy is


 berries are picked so that the odor may
 leave before the next picking.
 CUTWORMS
 Following their usual habit of sev-
 ering succulent stems, these caterpil-
 lars often sever the petioles of the
/ leaves of strawberries and the stems of
 the green fruit. They inflict another
 type of injury, hitherto undescribed,
L' which is a variation in their usual
 habits of feeding. They attack the
 berries from below and hollow them
 out, eating perhaps half of the berry
 without severing it from the vine. The
 writer had often noticed this type of
 injury before the cause of it was de-
 S termined by the capture of the culprit
 red-handed." Since the first capture
 many others have been made.
Gryl-
yen- A little digging about an injured
Agr.
 berry will usually unearth the cutworm.
 the poisoned bait described for cutworms


under cabbage insects, page 137.