The herald. [microfilm reel] (Los Angeles [Calif.]) 1893-1900, 1895-10-18

were invariably bright and clean the fol
lowing season. With more shade and
consequent humidity, the scale has pros
pored.
DR.. e. Kimball of Haywards, Alamedn
county. received colony of RhiZobiuo
ventralis and he reported that his april.
cots were clean this season, the first timr
since the scale attacked his trees. On ex-
animation of his orchard about month
ago we found the ladybirds, also the lar
vac in different stages. at work. Mr.. S.
+. Leib of San Jose informs me that for
three acres around where he placed a coll
ony of BLACK ladybifds his trees are
now free from scale.
Another valuable ladyblrd ia Rhizobius
! toowoombae. This little beetle, together
corus bivulnerus) species, has nearly AMI
hilated the so-called ''San Jose scale'
(Aspidodiotus perniciosus) from the San
Jose district.
Mr.. Koebele reportedOious chalybeus as
one of the most abundant species found
preying upon the red scale in Australia,
but 1t has not increased as rapidly as We
would desire, although the past SEASON il
showed up in greater numbers, and the
young twlgs and leaves in portion IL
Mr. Kerchival's orchard in Los Angeles
are bright and free from scale. This bee
tie is supposed TO feed on young black
scale, for the Kerchival trees are fairly
free from smut. At Mr.. Cooper's TIE
Orcus chalyb eus only held it's own on
black scale. whereas the "sIx-spotted Or
ous' multiplied rapidly. This. as you
will observe, is ia very handsome Austral-
ian species and feeds upon armored scales
as we'll AS lecaniuLns.
Another from the Antipcde5 is RhiZo-
bus debells. This IS the walnut growers
friend, as it has developed a remarkable
taste for the aphis that attacks the under
side OF walnut leaves. Like other aphis
IL =.
that adheres to the upper surface OF the
leaves and nuts and Injuries their growth
The scymnus nanns is probably native
and, as you will observe, 1t is perhaI o
the smallest OF all ladybirds. Nevertht-
less it is wonder. 1t was found pienti-
f1l IN orchards infested with red spi-
der'' in Los Angeles county last season,
and several colonies were sent out. We
intended distributing them Throughout
the state this summer but when | visited
! the orchards in Juno we could find but
| few, and no spiders to speak OF. Com
! missioner Scott of Los Anglers has prom
ised to report when they become numer-
Gus.
Another native with splendid appetite
| for mealy bugs is Hyperaspis lateralis.
/ first noticed it nearly three years ago
| near the Presdio, overlooking San Fran
cisco bay, where it was feeding upon
| mealy bugs that had almost killed out
| cypress trees (Cypressus macrocarpa).
| This season they have bred freely and
| we have sent out colonies and requested
| that they be liberated in orchards and
| gardens. Commissioner Hamilton of
| Orange county, in acknowledging receipt
| OF a colony, writes:
| | placed them midway between Santa
| Ana and Orange on orange trees SO badly
! infested with mealy bugs that their
| owner had cut off the tops and burned
| them. picked an orange leaf as large as
my hand, with the under side covered
| with young mealY bugs; on it placed
| several ladybirds, aid it was fine sport
| to see them eat. They acted like pigs
| in clover.
shall only refer to one more spe-
cies-Cryptoloemus montrouzieri-a ma
tive of Australia. introduced into the
Sandwich Islands by Mr.. Rochelle. 10
seph Marsden, com IN issioner of agrcul
ture at Honolulu. kindly sent us colonies,
. which we have been successfully breeding
| and sending to different sections of the
state. The larvae look like mealy bugs
and anyone not acquainted with them
would feel like crushing the little fell
lows, but it is in that stage they get in
their work. The last batch OF the season
! are now hatc'ing in our jars. TO show
| how the planters on the islands must APP
preclate what Mr.. Ko belle is dong for
them will quote portion of letter re-
ceived from Mr.. Ma,sden dated Septem-
Der 4, 1896:
The Chryp tolaemus has done wonder
rul work on these ISLANDS. 1t has no,
only entirely cleaned out Pulvinaria,
tn at threatened the total EXTINCTION Of
our growing coffee industry. but also a
serious blight that was destroying onr
citrus trees. This blight (named by MIR.
Maskeli Ddcty loptus albizzia) was pres
ent on the trees as thick as was the cot
tony cushion scale some six years since.
The Chry ptolaemus bred on this to such
an extent that ground and fences were
covered with the pupea and looked as IL
we had a snowstorm. Now it is seldom,
that any OF the scale can bs found and
the citrus trees are bearing good crops
this year.