THE TIMOTHY STEM-BORER. 5 
THE PUPA. 
(Fig. 4.) 
From the lateral aspect: Length 5 mm., diameter in thoracic region 1.125 mm. 
Pale cream color, somewhat acuminate-oyate, broadly rounded at head and thorax. 
Prothorax, from the lateral view, triangular, the dorsal surface being the base of the 
triangle, which is very broad and convex. Antenna passing upward at side of eye, 
between margin of prothorax and front femora, thence to dorsum, curving backward 
over base of wings. Wing-pads long and narrow, covering posterior legs, with the 
exception of the last three tarsal joints; front wings nearly covering hind ones. 
From the ventral aspect (fig. 4): The front of head is in almost direct line with the 
body; mandibles small and not closed; palpi widely separated and extending beyond 
front tibiz. Femora of first pair of legs directed dorsally, tibize resting on middle femora; 
first tarsal joints resting under tip of palpus; tarsal joints then extending caudad, 
almost parallel, except last two joints, which slightly diverge. Femora of second pair 
of legs parallel to femora of first pair, second 
tibiz, however, forming a greater angle with their 
femora than tibize of first pair of legs; second 
femora and tibiz resting upon wings for a part of 
their length; tarsal joints gradually converging un- 
til the last two, which nearly touch between 
wing pads. Third pair of legs covered by wing 
pads, with exception of last two joints and a part 
of third; last two parallel, touching, and extending 
to middle of sixth abdominal segment. 
Dorsal surface of the first six abdominal seg- 
ments almost flat, and in the third, fourth, fifth, 
and sixth segments the surface produced laterally 
into a fleshy fold projecting over side of abdomen, 
the anterior margin of which is rounded and the 
posterior square, giving the abdomen a notched 
appearance; in center of each projection laterally 
is a group of recurved bristles. 
Seventh abdominal segment (fig. 4), from a Fic. 4.—The timothy stem-borer: a, 
lateral view, cylindrical anteriorly; posteriorly  Pupa, lateral view; b, ventral view 
the dorsal surface is drawn out into a long cone- Bb Aeon G7, MRta see ey Chae 
: - E : F d, setigerous tubercle of sixth segment. 
shaped projection, the tip of which extends 4 4 © Greatly enlarged; d, more en- 
beyond the last abdominal segment, resting larged. (Original.) 
between its two chitinous spurs; ventral surface 
extending backward into a fleshy fold or lip, beyond insertion of following segment. 
Eighth segment (fig. 4) somewhat cylindrical anteriorly, telescoping into seventh; 
dorsal surface extending backward into a large fleshy projection or lip, almost filling 
space between cone-shaped projection of preceding segment and Y-like chitinous 
projection of following segment; a deep lateral notch or incision, but ventral projection 
much shorter than dorsal. 
Ninth segment (fig. 4) smallest, telescoping into eighth, and extending posteriorly 
into a Y-like projection, the tips of which, inclining forward, are amber-colored, 
chitinous, and spinelike. 
Setze: Numerous setze on ventral surface of abdomen, on head, and on prothorax. 
First abdominal segments bearing a few setze on dorsal surface; there is a small trans- 
verse ridge on dorsum of second segment, bearing a row of sete; following four segments 

