DESCRIPTION. 
21 
cell is supported by these larger spines and its body is not in touch 
with the moist walls of the cell. As these large and strongly chiti- 
nized spines do not occur in either the larval or the adult form of the 
insects, it is probable that 
their main function is to sup- 
port the pupa in the cell. 
THE ADULT OR BEETLE. 
(PI. I, figs. 1-2; text figs. 10, 11.) 
The original description of 
the beetle as made by Walsh 
is given below: 
Fidia viticida, new species. 
Chestnut rufous, punctured and 
densely covered with short grayish 
white prostrate hairs, so as to appear 
hoary. Head rather closely punc- 
tured, with a very fine longitudinal 
stria on the vertex. Clypeus and 
mandibles glabrous and black, the 
clypeus with a subterminal trans- 
verse row of punctures, armed with 
long golden hairs, the mandibles 
minutely punctured on their basal 
half. Palpi and antennas honey- 
yellow verging on rufous, the antennae 
| as long as the body, with joint 4 
fully £ longer than joint 3. Thorax 
finely and confluently punctured, 
about as long as wide, rather wider 
behind than before, the sides in a 
convex circular arc of not quite 60°, 
the males with the thorax rather 
longer and laterally less strongly curved than the females. Elytra punctato-striate, 
the striae subobsolete, the punctures approximate, and rather large but not deep, the 
interstices flat and with close-set fine shallow punctures. Legs with the anterior tibiae 
•of the male suddenly crooked | of the way to their tip; anterior tibia* of the female as 
straight as the others. Length $ .24-. 27 inch; 9 .24-. 28 inch. 
The ovipositor of the female (fig. 11, d, e) consists of a more or less 
solid terminal portion and a membranous proximal part. Ordinarily 
it remains completely withdrawn within the abdominal cavity, where 
the terminal part lies within the membrane, which is folded into three 
parts. Meso-ventrally the membrane is supported by a slender ehi- 
tinous rod (tig. 11, e). In the terminal portion arc a pair of chitinous 
rods. Fully extended, the ovipositor is three 4 times the length of the 
abdomen. 
Fig. 11. — The grape root-worm: Structural parts of the 
adult or beetle— a, Front view of head, showing biting 
mouth parts; 6, lower view of labium and maxilla?: 
c, antenna or "feeler; " d, terminal portion of the 
ovipositor; e, ovipositor with membranous portion 
extended; /, front leg of male beetle; g, front leg of 
female beetle; h, claws of tarsus. All parts greatly 
enlarged. (Original.) 
