INSECTS. 
119 
Another hymenopterous fly came out of the dead scales, which also 
measured about the twentieth part of an inch in length, the thorax 
and first segment of the body being light-brown, with the rest of the 
abdomen blackish and hairy ; the head was furnished with three ocelli ; 
the four wings were transparent, and the antennm long, jointed, and 
hairy. These parasitical flies no doubt do much good in lessening 
the numbers of this kind of coccus ; as, although breeding in similar 
situations, and with apparently as good a chance to multiply as the 
others, it was not found to be nearly so numerous as the scale insect 
first mentioned. This may perhaps be attributed to the attacks of 
these flies, as hundreds of dried-up scales were seen with large holes 
■n their backs, and the contents eaten out as above described. 
While on the subject of the orange-scale insect, it may be as 
well to mention that some time last year (1855) another coccus 
was imported into Jacksonville, Florida, on some lemons sent from 
Bermuda ; and, as they may perhaps spread in the vicinity, it would 
be well to draw attention to the insect, and describe it as far as known. 
The length of the full-grown female scale is rather more than the 
twentieth of an inch ; it is somewhat pear-shaped, and of a brown 
color ; the grub is of a reddish-yellow, and furnished with a piercer 
from its breast, like the coccus first described ; the young have two 
antennae, six legs, and two long hairs, or bristles, at the end of the 
body. The male scale is not so large as the female, and is formed of 
a white, cottony or parchment-looking substance, constituting a case, 
with an elevated and rounded ridge in the centre, in which a reddish 
l>upa was found. The mouth of this case was stopped up with a dark- 
looking substance, apparently the cast-skin of the larva. The male 
larva is reddish in color, and measures not more than the fortieth of 
an inch in length. The perfect fly is also red, and is furnished with 
two hairy antennas, six legs, and has the thorax very large. The 
two wings are transparent, and the end of the body is furnished with 
a curved, hard projection. As it is very probable that this insect 
will increase, it would be well to note any progress it may make dur- 
ing the ensuing year, and to use the remedies suggested in the first 
article on the coccus of the orange. 
There are also found on the orange-trees numbers of small mites, 
which have frequently been mistaken for the young cocci ; but they 
may be very easily distinguished, by their activity from the young 
scale insects, which crawl about very slowly. The mites have eight 
hairy legs, somewhat like those of minute spiders, and are mostly of 
a yellowish color, although some are also found of a delicate pink 
hue. They are generally seen briskly running among the stationary 
cocci, and may often be found concealed under the old scales ; but, 
whether they do any harm to the tree, or merely feed upon the dead 
or dying cocci, has not yet been satisfactorily ascertained. 
The pupa of a parasitical fly was found under the scale of one of 
the cocci ; the head, wings, anteniue, and legs were perfectly formed 
as in the ichneumon-flies ; the eyes were comparatively large and 
brown, and the rest of the body of a whitish-yellow. The perfect 
fly could not be recognised, however, as the pupa died without 
changing. 
