DESCKIPTIONS. 
15 
The first thoracic segment is broad and long, being about equal 
in length to the venter. The other thoracic segments are short, 
being about equal in length to the first two abdominal segments. The 
remaining abdominal segments are a Uttle longer and quite similar. 
The legs are short and armed with heavy, short brown spines. 
The abdominal segments are slightly constricted where they join 
one another. There are from two to four hairs on the lateral side of 
each segment. The spiracles are bro^vn, conspicuous, and are 
situated in a poorly defined, fight lateral stripe. They are sUghtly 
nearer the anterior end of the segment. 
The venter is depressed dorsally, with raised edges. It is sparsely 
hairy around the edge. The caudal notch has a small tooth on each 
side pointing sfightly 
upward and backward. 
The margin of the 
notch varies from deep 
brown to black. 
The average length of 
the mature larva is from 
18 to 21 mm., and the 
width is from 2.5 to 
3 mm. 
The Pupa. 
When first formed the 
pupa is opaque white, 
but after a time the 
eyes show through as 
pale, dusky, blue spots. 
About this time the tho- 
racic segments become 
a pale waxy ye. 'ow, but 
no othr.i chrng^s take 
place until suo-^v be- 
fore emergence. 
The pupa (P,' ,>. vc^i^ much resembles the adult beetle in shape, 
except that thfej a^oCL'jnyen is sfightly longer in the pupal stage. The 
head is bent forward sli2:htly, and each anterior angle is armed with 
a long, heavy spine, which tapers regularly to a point. The mouth 
parts are conspicuous. The antennae are laid along the margin of 
the head on the ventral side, and their tips are behind the tibiae of 
the second pair of legs. On the underside of the head and near the 
prothorax are two short, heavy spines. There are also two short, 
stout spines on the dorsal side of the head near the posterior angles. 
The case covering the springing apparatus is plainly visible 
between the anterior coxae. The leg cases are folded similarly to 
Fig. 1. — The sugar-beet wire worm (Limonius calif ornicus): a, Head; 
6, anal segment from above; c, same, lateral view. Highly mag- 
nified. (Original.) 
