TENTHREDO. 
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to the form of the antennae, which are in some 
clavated, in others filiform, &c. Among the prin- 
cipal species may be numbered the Tenthredo 
lutea of Limueus, which proceeds from a large 
green larva, of a finely granulated surface, with a 
flouble row of black specks along each side, and a 
dusky dorsal line bounded on each by yellow: it 
feeds on various species of willow, &c. the parch- 
ment-like case in which it envelops itself in autumn 
is of a pale yellowish brown colour, and the chry- 
salis, which is of a pale dusky or brownish cast, 
exhibits the limbs of the future fly, which is equal 
in size to a common wasp, and is of a yellow 
colour, barred with black: the antennce rather 
short, and strongly clavated. 
The Tenthredo Amerince of Linnaeus is some- 
what smaller than the preceding, and of a cinere- 
ous brown colour, with the under part of the abdo- 
men rufous or dull orange: like the former, its 
caterpillar is of a green colour, and of a finely 
roughened surface powdered with numerous whitish 
specks. 
The larvie of the smaller Tenthredines are often . 
very injurious to different kinds of esculent veget- 
ables, as turnips, &c. &c. 
