544 INJURIOUS AND BENEFICIAL INSECTS. 
sometimes only half the length of the leaf, but often it extends 
its burrow around the end of the midrib, half way down the 
other side of the leaf. The track of its burrow is irregularly sin- 
Fig.47, uous. At the end of this gallery or burrow it forms a 
i round chamber just as wide as the body is long, disk- 
shaped, the walls being convex, the cell looking like a 
smooth, regular blister. 
Larva. The grub (fig. = — greatly in form from the preceding 
one, the body | ick, but little flattened, sere rather convex 
above and pelow; i in , form oval lanceolate, widest in the middle, taper- 
ing muc to 
eee Lois An same width as the fifth abdominal ring, being 
` the mesothoracic ring and mayne the sides somewhat sharply pointed, 
while those of the succeedir ements are rounded. The eighth 
dominal segment, or one n next to the last, is tr transversely o plone, and e two-thirds 
as wide as the seventh. The ninth and 1 a little over one-ha wide as the 
eighth. It gives rise to a minute projection v pie end. Th e prothoracie Seeman 
head are closely op aaa together; the two together 
full convex on the front edge, the Seadirde between the head and succeeding rip g 
being indicated by a ehi notch. The anterior surface of the som 
ea. r 
nea 
head is very minute compared w Sin the oe r part the Brachys larva, 4 
scarcely perceptible except under high zien start ing powers. The body is uniformly 
pale greenish, and the skin is smooth. reget Piast tah between the two larve are 
most remarkable, when we consider how s the beetles joi each other. 
The Spotted-necked Languria.—This beetle is allied to Trogo- 
sita, an insect which is known to be injurious to housed grain, 
though the grub is still more intimately related to the European 
Nemosoma elongatum, which is found under the bark of elms in 
burrows inhabited by Hylesinus, a wood-boring beetle. Having 
received the Languria in all its stages of growth, from Mr. Bel- 
frage of Texas, though the insect occurs in the middle states, it 
is thought that a description of it will not be out of place in & 
report on economic entomology, as some members of the group to 
which it belongs are known to be destructive. The adult beetle 
was first described by Say (under the name of Languria puneti- 
collis) from Ohio. It is pale reddish, with the fore legs, wing- 
covers and end of the body black, with a large distinct black spot 
in the middle of the neck (prothorax). It is said by Mr. Say to 
frequent flowers. 
The larva (fig. 148) is unusually long and slender, — ~ body be 
of 
thickness throughout, whitish, with smooth e head is bat ‘ttle 
uniform eg 
oai han me rest of the body; bined eighth rog oF the abdomen is as large as pe 
sal, upeurve 
